Exhibit 2.1 Agreement and Plan of Merger by and among Steris Plc, Solar New Us Holding Co, Llc, Crystal Merger Sub 1, Llc and Cantel Medical Corp.

• Date: 20 December 2021
• Section: Merger Agreements

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER by and among STERIS plc, Solar

New US Holding Co, LLC, Crystal Merger Sub 1, LLC and Cantel Medical Corp.

dated as of January 12, 2021

TABLE OF CONTENTS Page ARTICLE I THE MERGERS 6 Section 1.1 The Mergers

6 Section 1.2 Closing 6 Section 1.3 Effective Times 7 Section 1.4 Governing

Documents 8 Section 1.5 Officers, Directors and Managers of the Surviving

Entities 8 Section 1.6 Tax Consequences 8 ARTICLE II TREATMENT OF SECURITIES

9 Section 2.1 Treatment of Capital Stock 9 Section 2.2 Payment for

Securities; Surrender of Certificates 11 Section 2.3 Dissenters’ Rights 13

Section 2.4 Treatment of Company RSU Awards 14 Section 2.5 Withholding 16

Section 2.6 Fractional Shares 16 ARTICLE III REPRESENTATIONS AND WARRANTIES

OF THE COMPANY 16 Section 3.1 Qualification, Organization, Subsidiaries,

etc. 17 Section 3.2 Capitalization 17 Section 3.3 Corporate Authority Relative

to this Agreement; No Violation 18 Section 3.4 Reports and Financial Statements

21 Section 3.5 Internal Controls and Procedures 22 Section 3.6 No Undisclosed

Liabilities 22 Section 3.7 Compliance with Laws; Permits 22 Section 3.8

Environmental Laws and Regulations 23 Section 3.9 Employee Benefit Plans 24

Section 3.10 Absence of Certain Changes or Events 25 Section 3.11 Investigation;

Litigation 25 Section 3.12 Information Supplied 26 Section 3.13 Regulatory

Matters. 26 Section 3.14 Tax Matters 28 Section 3.15 Labor Matters 29 Section

3.16 Intellectual Property 29 Section 3.17 Real Property 31 Section 3.18 Opinion

of Financial Advisor 31 Section 3.19 Required Vote 31 Section 3.20 Material

Contracts 32 Section 3.21 Insurance 34 Section 3.22 Finders and Brokers 34

Section 3.23 FCPA, Anti-Corruption and International Trade Laws 34

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Section 3.24 Takeover Statutes 35 Section 3.25 Transactions with Affiliates 35

Section 3.26 Material Customers and Suppliers 36 Section 3.27 No Canyon Newco

Entities Activity 36 Section 3.28 No Other Representations 36 ARTICLE IV

REPRESENTATIONS AND WARRANTIES OF PARENT, US HOLDCO AND CRYSTAL MERGER SUB 37

Section 4.1 Qualification 37 Section 4.2 Share Capital 38 Section 4.3 Corporate

Authority Relative to this Agreement; No Violation 39 Section 4.4 Reports and

Financial Statements 40 Section 4.5 Internal Controls and Procedures 41 Section

4.6 No Undisclosed Liabilities 41 Section 4.7 Compliance with Law; Permits 42

Section 4.8 Employee Benefit Plans 42 Section 4.9 Absence of Certain Changes or

Events 43 Section 4.10 Investigation; Litigation 43 Section 4.11 Information

Supplied 44 Section 4.12 Regulatory Matters 44 Section 4.13 Tax Matters 45

Section 4.14 Intellectual Property 46 Section 4.15 Opinion of Financial Advisor

47 Section 4.16 Material Contracts 47 Section 4.17 Finders and Brokers 47

Section 4.18 Financing 47 Section 4.19 FCPA and Anti-Corruption 48 Section 4.20

Stock Ownership 49 Section 4.21 No Crystal Merger Sub Activity 49 Section 4.22

No Other Representations 49 ARTICLE V COVENANTS RELATING TO CONDUCT OF

BUSINESS PENDING THE FIRST MERGER 50 Section 5.1 Conduct of Business by the

Company Pending the Closing 50 Section 5.2 Conduct of Business by Parent Pending

the Closing 55 Section 5.3 Solicitation by the Company 57 Section 5.4

Preparation of the Form S-4 and the Proxy Statement/Prospectus; Company Special

Meeting 60 Section 5.5 Creation of Canyon Newco Entities 62 ARTICLE VI

ADDITIONAL AGREEMENTS 62 Section 6.1 Access; Confidentiality; Notice of

Certain Events 62 Section 6.2 Reasonable Best Efforts 64 Section 6.3 Publicity

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Section 6.4 Directors’ and Officers’ Insurance and Indemnification 66 Section

6.5 Takeover Statutes 67 Section 6.6 Obligations of US Holdco and Crystal Merger

Sub 67 Section 6.7 Employee Benefits Matters 67 Section 6.8 Rule 16b-3 69

Section 6.9 Security Holder Litigation 69 Section 6.10 Delisting 69 Section 6.11

Director Resignations 69 Section 6.12 Certain Tax Matters 70 Section 6.13 Stock

Exchange Listing 71 Section 6.14 The Company’s Financing Cooperation 71 Section

6.15 Parent’s Financing Cooperation 73 Section 6.16 Resolution of Certain Pre-

Closing Matters 75 ARTICLE VII CONDITIONS TO CONSUMMATION OF THE MERGERS 75

Section 7.1 Conditions to Each Party’s Obligations to Effect the Mergers 75

Section 7.2 Conditions to Obligations of Parent, US Holdco and Crystal Merger

Sub 76 Section 7.3 Conditions to Obligations of the Company 77 ARTICLE VIII

TERMINATION 78 Section 8.1 Termination 78 Section 8.2 Effect of Termination

79 ARTICLE IX MISCELLANEOUS 81 Section 9.1 Amendment and Modification;

Waiver 81 Section 9.2 Non-Survival of Representations and Warranties 82 Section

9.3 Expenses 82 Section 9.4 Notices 82

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Section 9.5 Certain Definitions 83 Section 9.6 Terms Defined Elsewhere 97

Section 9.7 Interpretation 99 Section 9.8 Counterparts 100 Section 9.9 Entire

Agreement; Third-Party Beneficiaries 100 Section 9.10 Severability 101 Section

9.11 Governing Law; Jurisdiction 101 Section 9.12 Waiver of Jury Trial 102

Section 9.13 Assignment 102 Section 9.14 Enforcement; Remedies 103 Section 9.15

Liability of Financing Sources 103 Exhibits Exhibit A Voting Agreement

Exhibit B Parent Tax Certificate Exhibit C Company Tax Certificate

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AGREEMENT AND PLAN OF MERGER This AGREEMENT AND PLAN OF MERGER (hereinafter

referred to as this “Agreement”), dated January 12, 2021, is by and among STERIS

plc, a company incorporated under the laws of Ireland (“Parent”), Solar New US

Holding Co, LLC, a Delaware limited liability company and a wholly owned

subsidiary of Parent (“US Holdco”), Crystal Merger Sub 1, LLC, a Delaware

limited liability company and a direct wholly owned subsidiary of US Holdco

(“Crystal Merger Sub”), and Cantel Medical Corp., a Delaware corporation (the

“Company”). All capitalized terms used in this Agreement shall have the meanings

ascribed to such terms in Section 9.5 or as otherwise defined elsewhere in this

Agreement unless the context clearly provides otherwise. Parent, US Holdco,

Crystal Merger Sub and the Company are each sometimes referred to herein as a

“Party” and collectively as the “Parties”. RECITALS WHEREAS, the Parties

wish to effect a business combination through (a) the merger of Canyon Merger

Sub with and into the Company, with the Company being the surviving entity (the

“Pre-Closing Merger”), (b) immediately following the Pre-Closing Merger, the

conversion of the Company from a Delaware corporation to a Delaware limited

liability corporation (the “Pre-Closing Conversion”), (c) immediately following

the Pre-Closing Merger and the Pre- Closing Conversion, the merger of Crystal

Merger Sub with and into Canyon Newco, with Canyon Newco being the surviving

entity (the “First Merger”) and (d) immediately following the First Merger, the

merger of Canyon Newco, as the surviving entity of the First Merger, with and

into US Holdco, with US Holdco being the surviving entity (the “Second Merger”

and, together with the First Merger, the “Parent Mergers,” and, the Pre-Closing

Merger and the Parent Mergers collectively the “Mergers”); WHEREAS, in

connection with the Pre-Closing Merger, each outstanding share of common stock,

$0.10 par value per share, of the Company (the “Company Common Stock” or

“Company Shares”) issued and outstanding immediately prior to the Pre-Closing

Merger Effective Time (other than Dissenting Shares) will be automatically

converted into one (1) share of common stock of Canyon Newco (the “Canyon Newco

Common Stock” or “Canyon Newco Shares”); WHEREAS, in connection with the First

Merger, each outstanding share of Canyon Newco Common Stock issued and

outstanding immediately prior to the First Effective Time (other than Dissenting

Shares) will be automatically converted into the right to receive the Merger

Consideration upon the terms and conditions set forth in this Agreement and in

accordance with the General Corporation Law of the State of Delaware (the

“DGCL”) and the Limited Liability Company Act of the State of Delaware (the

“DLLCA”); WHEREAS, the board of directors of the Company (the “Company Board

of Directors”) has, on the terms and subject to the conditions set forth herein,

determined that this Agreement and the transactions contemplated hereby (the

“Transactions”), including the Pre-Closing Merger and the issuance of shares of

Canyon Newco Common Stock in connection therewith and the First Merger and the

issuance of shares of Parent Stock in connection therewith, are advisable and

fair to, and in the best interests of, the Company and its stockholders;

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