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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 F2VPDJQrYqN6RG1gwXtEoWQlJThxcmIT0ijiNMYnDSRDQC4vcwuRvGK01bkUSczK
 KZDujz9ymvV4nj5YbIFKqw==

<SEC-DOCUMENT>0000019446-08-000049.txt : 20080528
<SEC-HEADER>0000019446-08-000049.hdr.sgml : 20080528
<ACCEPTANCE-DATETIME>20080528182554
ACCESSION NUMBER:		0000019446-08-000049
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080523
FILED AS OF DATE:		20080528
DATE AS OF CHANGE:		20080528

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:			NODIFF ERIC W
		CENTRAL INDEX KEY:			0001312875

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31337
		FILM NUMBER:		08864595

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		(973) 890-7220

	MAIL ADDRESS:	
		STREET 1:		CANTEL MEDICAL CORP.
		STREET 2:		150 CLOVE ROAD, 9TH FLOOR
		CITY:			LITTLE FALLS
		STATE:			NJ
		ZIP:			07424
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2008-05-23</periodOfReport>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001312875</rptOwnerCik>
            <rptOwnerName>NODIFF ERIC W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>CANTEL MEDICAL CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>150 CLOVE ROAD</rptOwnerStreet2>
            <rptOwnerCity>LITTLE FALLS</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07424</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Senior VP and General Counsel</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2008-05-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>15000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35700</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Eric W. Nodiff</signatureName>
        <signatureDate>2008-05-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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