SEC Info  
    Home      Search      My Interests      Help      Sign In      Please Sign In

Hudson Technologies Inc./NY – ‘10-Q’ for 6/30/22 – ‘EX-101.CAL’

On:  Monday, 8/8/22, at 5:01pm ET   ·   For:  6/30/22   ·   Accession #:  1410578-22-2134   ·   File #:  1-13412

Previous ‘10-Q’:  ‘10-Q’ on 5/10/22 for 3/31/22   ·   Next:  ‘10-Q’ on 11/8/22 for 9/30/22   ·   Latest:  ‘10-Q’ on 11/7/23 for 9/30/23   ·   1 Reference:  By:  Hudson Technologies Inc./NY – ‘S-3’ on 1/13/23

Find Words in Filings emoji
 
  in    Show  and   Hints

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 8/08/22  Hudson Technologies Inc./NY       10-Q        6/30/22   53:5.2M                                   Toppan Merrill/FA2

Quarterly Report   —   Form 10-Q

Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML   1.21M 
 2: EX-31.1     Certification -- §302 - SOA'02                      HTML     22K 
 3: EX-31.2     Certification -- §302 - SOA'02                      HTML     22K 
 4: EX-32.1     Certification -- §906 - SOA'02                      HTML     18K 
 5: EX-32.2     Certification -- §906 - SOA'02                      HTML     18K 
11: R1          Document and Entity Information                     HTML     71K 
12: R2          Consolidated Balance Sheets                         HTML    116K 
13: R3          Consolidated Balance Sheets (Parenthetical)         HTML     38K 
14: R4          Consolidated Statements of Income                   HTML     95K 
15: R5          Consolidated Statements of Stockholders' Equity     HTML     56K 
16: R6          Consolidated Statements of Cash Flows               HTML    102K 
17: R7          Summary of Significant Accounting Policies          HTML     82K 
18: R8          Fair Value                                          HTML     20K 
19: R9          Inventories                                         HTML     30K 
20: R10         Property, plant and equipment                       HTML     61K 
21: R11         Leases                                              HTML     45K 
22: R12         Goodwill and intangible assets                      HTML     72K 
23: R13         Share-based compensation                            HTML     62K 
24: R14         Short-term and Long-term debt                       HTML     77K 
25: R15         Summary of Significant Accounting Policies          HTML    121K 
                (Policies)                                                       
26: R16         Summary of Significant Accounting Policies          HTML     44K 
                (Tables)                                                         
27: R17         Inventories (Tables)                                HTML     30K 
28: R18         Property, plant and equipment (Tables)              HTML     59K 
29: R19         Leases (Tables)                                     HTML     46K 
30: R20         Goodwill and intangible assets (Tables)             HTML     71K 
31: R21         Share-based compensation (Tables)                   HTML     57K 
32: R22         Short-term and Long-term debt (Tables)              HTML     55K 
33: R23         Summary of Significant Accounting Policies -        HTML     66K 
                Additional Information (Details)                                 
34: R24         Summary of Significant Accounting Policies -        HTML     37K 
                Summary of reconciliation of shares used to                      
                determine net loss per share (Details)                           
35: R25         Inventories (Details)                               HTML     23K 
36: R26         Property, plant and equipment - Summary of          HTML     76K 
                Elements of property, plant and equipment                        
                (Details)                                                        
37: R27         Property, plant and equipment - Additional          HTML     18K 
                Information (Details)                                            
38: R28         Leases - Maturity of lease payments (Details)       HTML     32K 
39: R29         Leases - Balance Sheet Classification and Other     HTML     31K 
                Information (Details)                                            
40: R30         Leases - Additional Information (Details)           HTML     24K 
41: R31         Goodwill and intangible assets - Company's other    HTML     41K 
                intangible assets (Details)                                      
42: R32         Goodwill and intangible assets - Additional         HTML     26K 
                Information (Details)                                            
43: R33         Share-based compensation - Summary of Status of     HTML     42K 
                Company's Stock Option Plan (Details)                            
44: R34         Share-based compensation - Weighted Average         HTML     28K 
                Contractual Life and Exercise Price (Details)                    
45: R35         Share-based compensation - Additional Information   HTML     60K 
                (Details)                                                        
46: R36         Short-term and long-term debt (Details)             HTML     34K 
47: R37         Short-term and long-term debt - Maturities of       HTML     30K 
                long-term debt and capital lease obligations                     
                (Details)                                                        
48: R38         Short-term and long-term debt - Additional          HTML    126K 
                Information (Details)                                            
51: XML         IDEA XML File -- Filing Summary                      XML     89K 
49: XML         XBRL Instance -- hdsn-20220630x10q_htm               XML   1.30M 
50: EXCEL       IDEA Workbook of Financial Reports                  XLSX    106K 
 7: EX-101.CAL  XBRL Calculations -- hdsn-20220630_cal               XML    138K 
 8: EX-101.DEF  XBRL Definitions -- hdsn-20220630_def                XML    333K 
 9: EX-101.LAB  XBRL Labels -- hdsn-20220630_lab                     XML    785K 
10: EX-101.PRE  XBRL Presentations -- hdsn-20220630_pre              XML    569K 
 6: EX-101.SCH  XBRL Schema -- hdsn-20220630                         XSD    114K 
52: JSON        XBRL Instance as JSON Data -- MetaLinks              283±   424K 
53: ZIP         XBRL Zipped Folder -- 0001410578-22-002134-xbrl      Zip    234K 


‘EX-101.CAL’   —   XBRL Calculations — hdsn-20220630_cal


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
<?xml version="1.0" encoding="windows-1252"?>
<!-- XBRL document created with Toppan Merrill Bridge 9.6.8167.22744 -->
<!-- Based on XBRL 2.1 -->
<!-- Created on: 8/8/2022 7:45:43 PM -->
<!-- Modified on: 8/8/2022 7:45:43 PM -->
<link:linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance">
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#StatementConsolidatedBalanceSheets" roleURI="http://www.hudsontech.com/role/StatementConsolidatedBalanceSheets"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#StatementConsolidatedStatementsOfIncome" roleURI="http://www.hudsontech.com/role/StatementConsolidatedStatementsOfIncome"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#StatementConsolidatedStatementsOfCashFlows" roleURI="http://www.hudsontech.com/role/StatementConsolidatedStatementsOfCashFlows"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosureInventoriesDetails" roleURI="http://www.hudsontech.com/role/DisclosureInventoriesDetails"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosurePropertyPlantAndEquipmentSummaryOfElementsOfPropertyPlantAndEquipmentDetails" roleURI="http://www.hudsontech.com/role/DisclosurePropertyPlantAndEquipmentSummaryOfElementsOfPropertyPlantAndEquipmentDetails"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosureLeasesMaturityOfLeasePaymentsDetails" roleURI="http://www.hudsontech.com/role/DisclosureLeasesMaturityOfLeasePaymentsDetails"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosureLeasesBalanceSheetClassificationAndOtherInformationDetails" roleURI="http://www.hudsontech.com/role/DisclosureLeasesBalanceSheetClassificationAndOtherInformationDetails"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosureLeasesMaturityOfLeasePaymentsDetailsCalc2" roleURI="http://www.hudsontech.com/role/DisclosureLeasesMaturityOfLeasePaymentsDetailsCalc2"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosureGoodwillAndIntangibleAssetsCompanySOtherIntangibleAssetsDetails" roleURI="http://www.hudsontech.com/role/DisclosureGoodwillAndIntangibleAssetsCompanySOtherIntangibleAssetsDetails"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosureShortTermAndLongTermDebtDetails" roleURI="http://www.hudsontech.com/role/DisclosureShortTermAndLongTermDebtDetails"/>
<roleRef xlink:type="simple" xlink:href="hdsn-20220630.xsd#DisclosureShortTermAndLongTermDebtMaturitiesOfLongTermDebtAndCapitalLeaseObligationsDetails" roleURI="http://www.hudsontech.com/role/DisclosureShortTermAndLongTermDebtMaturitiesOfLongTermDebtAndCapitalLeaseObligationsDetails"/>
<calculationLink xlink:role="http://www.hudsontech.com/role/StatementConsolidatedBalanceSheets" xlink:type="extended" xlink:title="00100 - Statement - Consolidated Balance Sheets">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent_637955847411933132"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_AssetsCurrent_637955847411933132" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_637955847411933132" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_637955847411943477" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="us-gaap_AccountsReceivableNetCurrent_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_637955847411933132" xlink:to="us-gaap_AccountsReceivableNetCurrent_637955847411943477" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_637955847411933132" xlink:to="us-gaap_InventoryNet_637955847411943477" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_637955847411933132" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent_637955847411943477" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_637955847411943477" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill" xlink:label="us-gaap_Goodwill_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Goodwill_637955847411943477" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill_637955847411943477" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_637955847411943477"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset_637955847411943477" order="5" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent_637955847411953705"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_OtherAssetsNoncurrent_637955847411953705" order="6" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity_637955847411953705"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_StockholdersEquity_637955847411953705" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_637955847411953705"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_637955847411953705" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_637955847411953705" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital_637955847411953705"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_637955847411953705" xlink:to="us-gaap_AdditionalPaidInCapital_637955847411953705" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue_637955847411953705"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_637955847411953705" xlink:to="us-gaap_CommonStockValue_637955847411953705" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PreferredStockValue" xlink:label="us-gaap_PreferredStockValue_637955847411953705"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_637955847411953705" xlink:to="us-gaap_PreferredStockValue_637955847411953705" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies_637955847411963416"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_CommitmentsAndContingencies_637955847411963416" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities_637955847411963416"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_Liabilities_637955847411963416" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="us-gaap_LongTermDebtNoncurrent_637955847411963416"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities_637955847411963416" xlink:to="us-gaap_LongTermDebtNoncurrent_637955847411963416" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_637955847411963416"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities_637955847411963416" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_637955847411963416" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet_637955847411963416"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities_637955847411963416" xlink:to="us-gaap_DeferredIncomeTaxLiabilitiesNet_637955847411963416" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent_637955847411963416"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_Liabilities_637955847411963416" xlink:to="us-gaap_LiabilitiesCurrent_637955847411963416" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShortTermBorrowings" xlink:label="us-gaap_ShortTermBorrowings_637955847411963416"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_637955847411963416" xlink:to="us-gaap_ShortTermBorrowings_637955847411963416" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedLiabilitiesAndOtherLiabilities" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilities_637955847411973449"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_637955847411963416" xlink:to="us-gaap_AccruedLiabilitiesAndOtherLiabilities_637955847411973449" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtCurrent" xlink:label="us-gaap_LongTermDebtCurrent_637955847411973449"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_637955847411963416" xlink:to="us-gaap_LongTermDebtCurrent_637955847411973449" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent_637955847411973449"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_637955847411963416" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent_637955847411973449" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableTradeCurrent" xlink:label="us-gaap_AccountsPayableTradeCurrent_637955847411973449"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_637955847411963416" xlink:to="us-gaap_AccountsPayableTradeCurrent_637955847411973449" order="5" use="optional" weight="1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/StatementConsolidatedStatementsOfIncome" xlink:type="extended" xlink:title="00200 - Statement - Consolidated Statements of Income">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_637955847411983413"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_637955847411983413" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_637955847411983413"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_637955847411983413" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_637955847411983413" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense_637955847411983413"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_637955847411983413" xlink:to="us-gaap_InterestExpense_637955847411983413" order="1" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherNonoperatingExpense" xlink:label="us-gaap_OtherNonoperatingExpense_637955847411983413"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OtherNonoperatingIncomeExpense_637955847411983413" xlink:to="us-gaap_OtherNonoperatingExpense_637955847411983413" order="2" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss_637955847411983413"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_637955847411983413" xlink:to="us-gaap_OperatingIncomeLoss_637955847411983413" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses_637955847411983413"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_637955847411983413" xlink:to="us-gaap_OperatingExpenses_637955847411983413" order="1" use="optional" weight="-1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_637955847411983413"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses_637955847411983413" xlink:to="us-gaap_SellingGeneralAndAdministrativeExpense_637955847411983413" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentForAmortization" xlink:label="us-gaap_AdjustmentForAmortization_637955847411993694"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingExpenses_637955847411983413" xlink:to="us-gaap_AdjustmentForAmortization_637955847411993694" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GrossProfit" xlink:label="us-gaap_GrossProfit_637955847411993694"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_637955847411983413" xlink:to="us-gaap_GrossProfit_637955847411993694" order="2" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues_637955847411993694"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_GrossProfit_637955847411993694" xlink:to="us-gaap_Revenues_637955847411993694" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_CostOfSalesExcludingCostOfNetRealizableValueAdjustment" xlink:label="hdsn_CostOfSalesExcludingCostOfNetRealizableValueAdjustment_637955847411993694"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_GrossProfit_637955847411993694" xlink:to="hdsn_CostOfSalesExcludingCostOfNetRealizableValueAdjustment_637955847411993694" order="2" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit_637955847411993694"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss" xlink:to="us-gaap_IncomeTaxExpenseBenefit_637955847411993694" order="2" use="optional" weight="-1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/StatementConsolidatedStatementsOfCashFlows" xlink:type="extended" xlink:title="00400 - Statement - Consolidated Statements of Cash Flows">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" order="1" use="optional" weight="1" priority="3"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss_637955847412003201"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_NetIncomeLoss_637955847412003201" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="us-gaap_DepreciationDepletionAndAmortization_637955847412003201"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_DepreciationDepletionAndAmortization_637955847412003201" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt_637955847412003201"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_GainsLossesOnExtinguishmentOfDebt_637955847412003201" order="3" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets_637955847412003201"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_AmortizationOfIntangibleAssets_637955847412003201" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_LowerOfCostOrNetRealizableValueAdjustment" xlink:label="hdsn_LowerOfCostOrNetRealizableValueAdjustment_637955847412003201"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="hdsn_LowerOfCostOrNetRealizableValueAdjustment_637955847412003201" order="5" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_637955847412013441"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_ProvisionForDoubtfulAccounts_637955847412013441" order="6" use="optional" weight="1" priority="1"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_AmortizationOfDeferredFinancingCosts" xlink:label="hdsn_AmortizationOfDeferredFinancingCosts_637955847412013441"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="hdsn_AmortizationOfDeferredFinancingCosts_637955847412013441" order="7" use="optional" weight="1" priority="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation_637955847412013441"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_ShareBasedCompensation_637955847412013441" order="8" use="optional" weight="1" priority="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_637955847412013441"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit_637955847412013441" order="9" use="optional" weight="1" priority="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_637955847412013441"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_637955847412013441" order="10" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="us-gaap_IncreaseDecreaseInInventories_637955847412013441"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_IncreaseDecreaseInInventories_637955847412013441" order="11" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInIncomeTaxesReceivable" xlink:label="us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_637955847412013441"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_IncreaseDecreaseInIncomeTaxesReceivable_637955847412013441" order="12" use="optional" weight="-1" priority="3"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_637955847412023387"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_637955847412023387" order="13" use="optional" weight="-1"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_IncreaseDecreaseInLeaseObligations" xlink:label="hdsn_IncreaseDecreaseInLeaseObligations_637955847412023387"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="hdsn_IncreaseDecreaseInLeaseObligations_637955847412023387" order="14" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637955847412023387"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_637955847412003201" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637955847412023387" order="15" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387" order="2" use="optional" weight="1" priority="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_637955847412023387"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock_637955847412023387" order="1" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsOfMergerRelatedCostsFinancingActivities" xlink:label="us-gaap_PaymentsOfMergerRelatedCostsFinancingActivities_637955847412023387"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387" xlink:to="us-gaap_PaymentsOfMergerRelatedCostsFinancingActivities_637955847412023387" order="2" use="optional" weight="-1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebt" xlink:label="us-gaap_ProceedsFromRepaymentsOfShortTermDebt_637955847412023387"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387" xlink:to="us-gaap_ProceedsFromRepaymentsOfShortTermDebt_637955847412023387" order="3" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_637955847412033501"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387" xlink:to="us-gaap_ProceedsFromIssuanceOfLongTermDebt_637955847412033501" order="4" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:label="us-gaap_RepaymentsOfLongTermDebt_637955847412033501"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387" xlink:to="us-gaap_RepaymentsOfLongTermDebt_637955847412033501" order="5" use="optional" weight="-1" priority="2"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_ExcessTaxBenefitsFromShareBasedCompensationFinancingActivities" xlink:label="hdsn_ExcessTaxBenefitsFromShareBasedCompensationFinancingActivities_637955847412033501"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_637955847412023387" xlink:to="hdsn_ExcessTaxBenefitsFromShareBasedCompensationFinancingActivities_637955847412033501" order="6" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_637955847412033501"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_637955847412033501" order="3" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_637955847412033501"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_637955847412033501" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_637955847412033501" order="1" use="optional" weight="-1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosureInventoriesDetails" xlink:type="extended" xlink:title="40301 - Disclosure - Inventories (Details)">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryGross" xlink:label="us-gaap_InventoryGross_637955847412043464"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet" xlink:to="us-gaap_InventoryGross_637955847412043464" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryAdjustments" xlink:label="us-gaap_InventoryAdjustments_637955847412043464"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet" xlink:to="us-gaap_InventoryAdjustments_637955847412043464" order="2" use="optional" weight="-1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosurePropertyPlantAndEquipmentSummaryOfElementsOfPropertyPlantAndEquipmentDetails" xlink:type="extended" xlink:title="40401 - Disclosure - Property, plant and equipment - Summary of Elements of property, plant and equipment (Details)">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_637955847412043464"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_637955847412043464" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_637955847412043464"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_637955847412043464" order="2" use="optional" weight="-1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosureLeasesMaturityOfLeasePaymentsDetails" xlink:type="extended" xlink:title="40501 - Disclosure - Leases - Maturity of lease payments (Details)">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_637955847412053455"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_637955847412053455" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_637955847412053455"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_637955847412053455" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_637955847412053455"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_637955847412053455" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_637955847412053455"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_637955847412053455" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearThree" xlink:label="hdsn_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearThree_637955847412053455"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="hdsn_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearThree_637955847412053455" order="5" use="optional" weight="1" priority="2"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosureLeasesBalanceSheetClassificationAndOtherInformationDetails" xlink:type="extended" xlink:title="40502 - Disclosure - Leases - Balance Sheet Classification and Other Information (Details)">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent_637955847412053455"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent_637955847412053455" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent_637955847412053455"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent_637955847412053455" order="2" use="optional" weight="1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosureLeasesMaturityOfLeasePaymentsDetailsCalc2" xlink:type="extended" xlink:title="40502 - Disclosure - Leases - Maturity of lease payments (Details) - calc 2">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_637955847412063459"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_637955847412063459" order="1" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability_637955847412063459"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_OperatingLeaseLiability_637955847412063459" order="2" use="optional" weight="1" priority="2"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosureGoodwillAndIntangibleAssetsCompanySOtherIntangibleAssetsDetails" xlink:type="extended" xlink:title="40601 - Disclosure - Goodwill and intangible assets - Company's other intangible assets (Details)">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_637955847412063459"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross_637955847412063459" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_637955847412063459"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_637955847412063459" order="2" use="optional" weight="-1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosureShortTermAndLongTermDebtDetails" xlink:type="extended" xlink:title="40801 - Disclosure - Short-term and long-term debt (Details)">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtLongtermAndShorttermCombinedAmount" xlink:label="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtCurrent" xlink:label="us-gaap_DebtCurrent_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount" xlink:to="us-gaap_DebtCurrent_637955847412073423" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LinesOfCreditCurrent" xlink:label="us-gaap_LinesOfCreditCurrent_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DebtCurrent_637955847412073423" xlink:to="us-gaap_LinesOfCreditCurrent_637955847412073423" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_LongtermDebtCurrentNetOfOtherDebt" xlink:label="hdsn_LongtermDebtCurrentNetOfOtherDebt_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_DebtCurrent_637955847412073423" xlink:to="hdsn_LongtermDebtCurrentNetOfOtherDebt_637955847412073423" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="us-gaap_LongTermDebtNoncurrent_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtLongtermAndShorttermCombinedAmount" xlink:to="us-gaap_LongTermDebtNoncurrent_637955847412073423" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_LongTermDebtNonCurrentNetOfOtherDebt" xlink:label="hdsn_LongTermDebtNonCurrentNetOfOtherDebt_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LongTermDebtNoncurrent_637955847412073423" xlink:to="hdsn_LongTermDebtNonCurrentNetOfOtherDebt_637955847412073423" order="1" use="optional" weight="1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsNoncurrentNet" xlink:label="us-gaap_DeferredFinanceCostsNoncurrentNet_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LongTermDebtNoncurrent_637955847412073423" xlink:to="us-gaap_DeferredFinanceCostsNoncurrentNet_637955847412073423" order="2" use="optional" weight="-1" priority="2"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="us-gaap_DeferredFinanceCostsNet_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LongTermDebtNoncurrent_637955847412073423" xlink:to="us-gaap_DeferredFinanceCostsNet_637955847412073423" order="3" use="optional" weight="-1" priority="2"/>
<loc xlink:type="locator" xlink:href="hdsn-20220630.xsd#hdsn_LongTermDebtFirstInLastOutFilo" xlink:label="hdsn_LongTermDebtFirstInLastOutFilo_637955847412073423"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="us-gaap_LongTermDebtNoncurrent_637955847412073423" xlink:to="hdsn_LongTermDebtFirstInLastOutFilo_637955847412073423" order="4" use="optional" weight="1"/>
</calculationLink>
<calculationLink xlink:role="http://www.hudsontech.com/role/DisclosureShortTermAndLongTermDebtMaturitiesOfLongTermDebtAndCapitalLeaseObligationsDetails" xlink:type="extended" xlink:title="40802 - Disclosure - Short-term and long-term debt - Maturities of long-term debt and capital lease obligations (Details)">
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:label="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths_637955847412083396"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsRepaymentsOfPrincipalInNextTwelveMonths_637955847412083396" order="1" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo_637955847412083396"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearTwo_637955847412083396" order="2" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree_637955847412083396"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearThree_637955847412083396" order="3" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour_637955847412083396"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFour_637955847412083396" order="4" use="optional" weight="1"/>
<loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive_637955847412083396"/>
<calculationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtAndCapitalLeaseObligations" xlink:to="us-gaap_LongTermDebtAndCapitalLeaseObligationsMaturitiesRepaymentsOfPrincipalInYearFive_637955847412083396" order="5" use="optional" weight="1"/>
</calculationLink>
</link:linkbase>


1 Subsequent Filing that References this Filing

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 1/13/23  Hudson Technologies Inc./NY       S-3                    5:831K                                   Toppan Merrill/FA
Top
Filing Submission 0001410578-22-002134   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
AboutPrivacyRedactionsHelp — Mon., Apr. 29, 4:15:13.1pm ET