Exhibit 5


                                                     March 19, 2001


Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549

                            Cantel Medical Corp.
                            Registration Statement on Form S-8
                            ----------------------------------

Gentlemen:

         We have been requested by Cantel Medical Corp., a Delaware corporation
(the "Company"), to furnish you with our opinion as to the matters hereinafter
set forth in connection with the above-captioned registration statement (the
"Registration Statement") covering an aggregate of 1,062,250 shares (the
"Shares") of the Company's common stock, par value $.10 per share offered on
behalf of the Company in connection with (i) the Company's 1997 Employee Stock
Option Plan (the "Employee Plan"); (ii) the Company's 1998 Directors' Stock
Option Plan (the "Directors Plan") (the Employee Plan and the Directors Plan are
hereinafter collectively referred to as the "Plans") and (iii) certain stock
option agreements between the Company and certain of its directors and one
officer (the "Option Agreements").

         In connection with this opinion, we have examined the Registration
Statement, the Company's Restated Certificate of Incorporation and By-laws, the
Plans, the Option Agreements, copies of the records of corporate proceedings of
the Company, and such other documents as we have deemed necessary to enable us
to render the opinion hereinafter expressed.

         Based upon and subject to the foregoing, we are of the opinion that the
Shares, when sold in accordance with the Plans and Option Agreements, will be
legally issued, fully paid and non-assessable.

         We render no opinion as to the laws of any jurisdiction other than the
internal laws of the State of New York and the internal corporate law of the
State of Delaware.

         We hereby consent to the use of this opinion as an exhibit to the
Registration Statement and to the reference to our name under the caption "Legal
Opinions" in the prospectus included in the Registration Statement.


                                                 Very truly yours,


                                     DORNBUSH MENSCH MANDELSTAM & SCHAEFFER, LLP