-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Fpz1IasPviaA96sOW1PNaBNwjOBLdy16YuqTx2e5KnSS5MOXtzbFeYJHkaH69RT4
 BjcDLfx4z4RnwsWMKGMdcg==

<SEC-DOCUMENT>0000019446-09-000005.txt : 20090116
<SEC-HEADER>0000019446-09-000005.hdr.sgml : 20090116
<ACCEPTANCE-DATETIME>20090116162347
ACCESSION NUMBER:		0000019446-09-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090115
FILED AS OF DATE:		20090116
DATE AS OF CHANGE:		20090116

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CANTEL MEDICAL CORP
		CENTRAL INDEX KEY:			0000019446
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				221760285
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0731

	BUSINESS ADDRESS:	
		STREET 1:		OVERLOOK AT GREAT NOTCH
		STREET 2:		150 CLOVE ROAD
		CITY:			LITTLE FALLS
		STATE:			NJ
		ZIP:			07424
		BUSINESS PHONE:		9734708700

	MAIL ADDRESS:	
		STREET 1:		OVERLOOK AT GREAT NOTCH
		STREET 2:		150 CLOVE ROAD
		CITY:			LITTLE FALLS
		STATE:			NJ
		ZIP:			07424

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CANTEL INDUSTRIES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	STENDIG INDUSTRIES INC
		DATE OF NAME CHANGE:	19890425

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CHARVOZ CARSEN CORP
		DATE OF NAME CHANGE:	19861215

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HIRSCHFIELD ALAN J
		CENTRAL INDEX KEY:			0000941417

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31337
		FILM NUMBER:		09531788

	BUSINESS ADDRESS:	
		STREET 1:		3490 CLUBHOUSE DR 1-2
		CITY:			WILSON
		STATE:			WY
		ZIP:			83004
		BUSINESS PHONE:		3077339742

	MAIL ADDRESS:	
		STREET 1:		3490 CLUBHOUSE DR 1-2
		CITY:			WILSON
		STATE:			WY
		ZIP:			83014
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-01-15</periodOfReport>

    <issuer>
        <issuerCik>0000019446</issuerCik>
        <issuerName>CANTEL MEDICAL CORP</issuerName>
        <issuerTradingSymbol>CMN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000941417</rptOwnerCik>
            <rptOwnerName>HIRSCHFIELD ALAN J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3490 CLUBHOUSE DRIVE SUITE 206</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WILSON</rptOwnerCity>
            <rptOwnerState>WY</rptOwnerState>
            <rptOwnerZipCode>83014</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-01-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>25000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.60</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>256723</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-01-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.75</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>246723</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Alan J. Hirschfield</signatureName>
        <signatureDate>2009-01-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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