-----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,
 KeNJFTXmUr/Up7NNs8PyxYEvpQ1BSCftQQY9K4WyfPeZvRHgk0wjfpaWtn74fiOc
 QyQoWBIWqJ1JVRYxZVAh5g==

<SEC-DOCUMENT>0001209191-11-013663.txt : 20110301
<SEC-HEADER>0001209191-11-013663.hdr.sgml : 20110301
<ACCEPTANCE-DATETIME>20110301152301
ACCESSION NUMBER:		0001209191-11-013663
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20110225
FILED AS OF DATE:		20110301
DATE AS OF CHANGE:		20110301

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			IDEX CORP /DE/
		CENTRAL INDEX KEY:			0000832101
		STANDARD INDUSTRIAL CLASSIFICATION:	PUMPS & PUMPING EQUIPMENT [3561]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-11625
		FILM NUMBER:		11651226

	BUSINESS ADDRESS:	
		STREET 1:		630 DUNDEE RD STE 400
		CITY:			NORTHBROOK
		STATE:			IL
		ZIP:			60062
		BUSINESS PHONE:		8474987070

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MICROFLUIDICS INTERNATIONAL CORP
		CENTRAL INDEX KEY:			0000723889
		STANDARD INDUSTRIAL CLASSIFICATION:	LABORATORY APPARATUS & FURNITURE [3821]
		IRS NUMBER:				042793022
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		30 OSSIPEE RD
		STREET 2:		P.O. BOX 9101
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02464
		BUSINESS PHONE:		6179695452

	MAIL ADDRESS:	
		STREET 1:		30 OSSIPEE ROAD
		STREET 2:		P.O. BOX 9101
		CITY:			NEWTON
		STATE:			MA
		ZIP:			02464

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MFIC CORP
		DATE OF NAME CHANGE:	20010418

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MICROFLUIDICS INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19930713
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>c13454_3x0.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0203</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2011-02-25</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000723889</issuerCik>
        <issuerName>MICROFLUIDICS INTERNATIONAL CORP</issuerName>
        <issuerTradingSymbol>MFLU.OB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000832101</rptOwnerCik>
            <rptOwnerName>IDEX CORP /DE/</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1925 WEST FIELD COURT, SUITE 200</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAKE FOREST</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60045</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6940731</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">IDEX Corporation (&quot;IDEX&quot;), Nano Merger Sub, Inc., a wholly owned subsidiary of IDEX (&quot;Purchaser&quot;), and Microfluidics International Corporation (the &quot;Issuer&quot;), entered into an Agreement and Plan of Merger, dated as of January 10, 2011, pursuant to which Purchaser conducted a cash tender offer (the &quot;Offer&quot;) to purchase all outstanding shares of common stock, par value $0.01 per share, of the Issuer (the &quot;Shares&quot;), at a price of $1.35 per Share, net to the seller in cash, and subject to the terms and conditions set forth in the Offer to Purchase, dated January 25, 2011, as amended, attached as an exhibit to the Tender Offer Statement on Schedule TO, initially filed by IDEX and Purchaser with the Securities and Exchange Commission on January 25, 2011, as amended.</footnote>
        <footnote id="F2">The Offer expired at 12:00 midnight, New York City time, on February 24, 2011. An aggregate of 6,940,731 Shares were validly tendered and not withdrawn in the Offer (including certain Shares tendered under the Offer's guaranteed delivery procedures), representing approximately 66.54% of the Issuer's outstanding Shares. On February 25, 2011, Purchaser accepted for payment all validly tendered and not withdrawn Shares. Purchaser is the owner of the Shares purchased in the Offer. IDEX may be deemed to be the indirect beneficial owner of the Shares held by Purchaser.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>IDEX Corporation, by /s/ Frank J. Notaro, Vice President and General Counsel</signatureName>
        <signatureDate>2011-03-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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