X0202 4/A 2006-10-18 2006-10-19 0000019446 CANTEL MEDICAL CORP CMN 0001244403 DORNBUSH DARWIN C DORNBUSH SCHAEFFER STRONGIN & VENAGLIA 747 THIRD AVENUE NEW YORK NY 10017 1 0 0 0 Common Stock 2006-10-18 4 M 0 1125 9.97 A 15875 D Common Stock 18550 D Includes 2,250 shares owned by reporting person that were previously reported as held in a pension plan in which the reporting person is a trustee. This transaction was inadvertently omitted in the original Form 4 filed on October 19, 2006 (which reported the exercise of a stock option to which the presently reported transaction relates). As a result of the failure to report the stock issuance on the Form 4 filed on October 19, 2006 (to which this amendment relates), the beneficial stock ownership reported in Table I, Column 5 of subsequent Form 4s of the Reporting Person was incorrect. Therefore, this amendment is also being filed to correct the previously reported stock ownership as follows: On the Form 4 of the Reporting Person filed on 1/18/07, the previously reported amounts of 15,875 and 17,000 are hereby revised to 17,000 and 18,125, respectively, and on the Form 4 of the Reporting Person filed on 4/26/07, the previously reported amounts of 18,125 and 17,425 are hereby revised to 19,250 and 18,550, respectively. /s/ Darwin C. Dornbush 2007-05-29