Exhibit 16 Arthur Andersen LLP 1601 Market Street Philadelphia PA 19103-2499 Tel 267 675 6000 www.andersen.com Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 May 30, 2002 Ladies and Gentlemen: We have read the second and third paragraphs of Item 4 included in the Form 8-K dated May 30, 2002 of the Air Products Retirement Savings and Stock Ownership Plan to be filed with the Securities and Exchange Commission and are in agreement with the statements contained therein. Very truly yours, Arthur Andersen LLP Copy to: Mr. John R. Owings Vice President and Chief Financial Officer Air Products and Chemicals, Inc.