THIS PLEDGE AND ESCROW AGREEMENT (the “Agreement”) is made and entered into as of April 20, 2007 (the “Effective Date”) by and among TECH LABORATORIES, INC., and existing under the laws of the State of New Jersey (the “Pledgor”), CORNELL CAPITAL PARTNERS, LP, (the “Pledgee”), and DAVID GONZALEZ, ESQ., as escrow agent (“Escrow Agent”).

WHEREAS, in order to secure the full and prompt payment when due (whether at the stated maturity, by acceleration or otherwise) of all of the Company’s obligations (the “Obligations”) to the Pledgee or any successor to the Pledgee under this Agreement, the Securities Purchase Agreement of even date herewith between the Pledgor and the Pledgee (the “Securities Purchase Agreement”), the Convertible Debentures (the “Convertible Debentures”) issued or to be issued by the Company to the Pledgee, either now or in the future, up to a total of One Million Four Hundred Thousand Dollars ($1,400,000) of principal, plus any interest, costs, fees, and other amounts owed to the Pledgee thereunder, the Restated Security Agreement of even date herewith between the Pledgor and the Pledgee (the “Security Agreement”), and all other contracts entered into between the parties hereto (collectively, the “Transaction Documents”), the Pledgor has agreed to irrevocably pledge to the Pledgee all of the shares of capital stock of Renewal Fuels, Inc., a Delaware corporation and subsidiary of the Pledgor (“Renewal Fuels”), which consists of two hundred (200 shares of common stock of Renewal Fuels, par value $.001 (the “Pledged Shares”).

1.1. The Pledgor hereby grants to Pledgee a security interest in all Pledged Shares as security for Pledgor’s obligations under the Convertible Debentures. Simultaneously with the execution of the Transaction Documents, the Pledgor shall deliver to the Escrow Agent stock certificates representing the Pledged Shares, together with duly executed stock powers or other appropriate transfer documents executed in blank by the Pledgor (the “Transfer Documents”), and such stock certificates and Transfer Documents shall be held by the Escrow Agent until the full payment of all amounts due to the Pledgee under the Convertible Debentures and through repayment in accordance with the terms of the Convertible Debentures, or the termination or expiration of this Agreement.

3. Release of Pledged Shares from Pledge. Upon the payment of all amounts due to the Pledgee under the Convertible Debentures by repayment in accordance with the terms of the Convertible Debentures, the parties hereto shall notify the Escrow Agent to such effect in writing. Upon receipt of such written notice for payment of the amounts due to the Pledgee under the Convertible Debentures, the Escrow Agent shall return to the Pledgor the Transfer Documents and the certificates representing the Pledged Shares, (collectively the “Pledged Materials”), whereupon any and all rights of Pledgee in the Pledged Materials shall be terminated. Notwithstanding anything to the contrary contained herein, upon full payment of all amounts due to the Pledgee under the Convertible Debentures, by repayment in accordance with the terms of the Note, this Agreement and Pledgee’s security interest and rights in and to the Pledged Shares shall terminate.

5. Remedies. Upon and anytime after the occurrence of an Event of Default, the Pledgee shall have the right to provide written notice of such Event of Default (the “Default Notice”) to the Escrow Agent, with a copy to the Pledgor. As soon as practicable after receipt of the Default Notice, the Escrow Agent shall deliver to Pledgee the Pledged Materials held by the Escrow Agent hereunder. Upon receipt of the Pledged Materials, the Pledgee shall have the right to (i) sell the Pledged Shares and to apply the proceeds of such sales, net of any selling commissions, to the Obligations owed to the Pledgee by the Pledgor under the Transaction Documents, including, without limitation, outstanding principal, interest, legal fees, and any other amounts owed to the Pledgee, and exercise all other rights and (ii) any and all remedies of a secured party with respect to such property as may be available under the Uniform Commercial Code as in effect in the State of New Jersey. To the extent that the net proceeds received by the Pledgee are insufficient to satisfy the Obligations in full, the Pledgee shall be entitled to a deficiency judgment against the Pledgor for such amount. The Pledgee shall have the absolute right to sell or dispose of the Pledged Shares in any manner it sees fit and shall have no liability to the Pledgor or any other party for selling or disposing of such Pledged Shares even if other methods of sales or dispositions would or allegedly would result in greater proceeds than the method actually used. The Pledgee shall return any Pledged Shares released to it and remaining after the Pledgee has applied the net proceeds to all amounts owed to the Pledgee.

5.1. Each right, power and remedy of the Pledgee provided for in this Agreement or any other Transaction Document shall be cumulative and concurrent and shall be in addition to every other such right, power or remedy. The exercise or beginning of the exercise by the Pledgee of any one or more of the rights, powers or remedies provided for in this Agreement or any other Transaction Document or now or hereafter existing at law or in equity or by statute or otherwise shall not preclude the simultaneous or later exercise by the Pledgee of all such other rights, powers or remedies, and no failure or delay on the part of the Pledgee to exercise any such right, power or remedy shall operate as a waiver thereof. No notice to or demand on the Pledgor in any case shall entitle it to any other or further notice or demand in similar or other circumstances or constitute a waiver of any of the rights of the Pledgee to any other further action in any circumstances without demand or notice. The Pledgee shall have the full power to enforce or to assign or contract is rights under this Agreement to a third party.

6.2. The Escrow Agent may act in reliance upon any writing or instrument or signature which it, in good faith, believes to be genuine, may assume the validity and accuracy of any statement or assertion contained in such a writing or instrument, and may assume that any person purporting to give any writing, notice, advice or instructions in connection with the provisions hereof has been duly authorized to do so. The Escrow Agent shall not be liable in any manner for the sufficiency or correctness as to form, manner, and execution, or validity of any instrument deposited in this escrow, nor as to the identity, authority, or right of any person executing the same; and its duties hereunder shall be limited to the safekeeping of such certificates, monies, instruments, or other document received by it as such escrow holder, and for the disposition of the same in accordance with the written instruments accepted by it in the escrow.

6.3. The Pledgee and the Pledgor hereby agree, to defend and indemnify the Escrow Agent and hold it harmless from any and all claims, liabilities, losses, actions, suits, or proceedings at law or in equity, or any other expenses, fees, or charges of any character or nature which it may incur or with which it may be threatened by reason of its acting as Escrow Agent under this Agreement; and in connection therewith, to indemnify the Escrow Agent against any and all expenses, including attorneys’ fees and costs of defending any action, suit, or proceeding or resisting any claim (and any costs incurred by the Escrow Agent pursuant to Sections 6.4 or 6.5 hereof). The Escrow Agent shall be vested with a lien on all property deposited hereunder, for indemnification of attorneys’ fees and court costs regarding any suit, proceeding or otherwise, or any other expenses, fees, or charges of any character or nature, which may be incurred by the Escrow Agent by reason of disputes arising between the makers of this escrow as to the correct interpretation of this Agreement and instructions given to the Escrow Agent hereunder, or otherwise, with the right of the Escrow Agent, regardless of the instructions aforesaid, to hold said property until and unless said additional expenses, fees, and charges shall be fully paid. Any fees and costs charged by the Escrow Agent for serving hereunder shall be paid by the Pledgor.

6.4. If any of the parties shall be in disagreement about the interpretation of this Agreement, or about the rights and obligations, or the propriety of any action contemplated by the Escrow Agent hereunder, the Escrow Agent may, at its sole discretion deposit the Pledged Materials with the Clerk of the United States District Court of New Jersey, sitting in Newark, New Jersey, and, upon notifying all parties concerned of such action, all liability on the part of the Escrow Agent shall fully cease and terminate. The Escrow Agent shall be indemnified by the Pledgor, the Company and Pledgee for all costs, including reasonable attorneys’ fees in connection with the aforesaid proceeding, and shall be fully protected in suspending all or a part of its activities under this Agreement until a final decision or other settlement in the proceeding is received.

6.5. The Escrow Agent may consult with counsel of its own choice (and the costs of such counsel shall be paid by the Pledgor and the Pledgee) and shall have full and complete authorization and protection for any action taken or suffered by it hereunder in good faith and in accordance with the opinion of such counsel. The Escrow Agent shall not be liable for any mistakes of fact or error of judgment, or for any actions or omissions of any kind, unless caused by its willful misconduct or gross negligence.

6.7 Conflict Waiver. The Pledgor hereby acknowledges that the Escrow Agent is general counsel to the Pledgee, a partner in the general partner of the Pledgee, and counsel to the Pledgee in connection with the transactions contemplated and referred herein. The Pledgor agrees that in the event of any dispute arising in connection with this Agreement or otherwise in connection with any transaction or agreement contemplated and referred herein, the Escrow Agent shall be permitted to continue to represent the Pledgee and the Pledgor will not seek to disqualify such counsel and waives any objection Pledgor might have with respect to the Escrow Agent acting as the Escrow Agent pursuant to this Agreement.

If to the Pledgor, to:	Tech Laboratories, Inc.
	1818 North Farwell Avenue
	Milwaukee, WI 53202
	Attention: John King
	Telephone:
	Facsimile:

With a copy to:	Kirkpatrick & Lockhart Preston Gates Ellis LLP
	201 South Biscayne Boulevard - Suite 2000
	Miami, FL 33131-2399
	Attention: Clayton E. Parker, Esq.
	Telephone: (305) 539-3300
	Facsimile: (305) 358-7095

If to the Pledgee:	Cornell Capital Partners, LP
	101 Hudson Street, Suite 3700
	Jersey City, NJ 07302
	Attention: Mark A. Angelo
	Telephone: (201) 985-8300
	Facsimile: (201) 985-8744

8. Governing Law; Venue; Service of Process. The validity, interpretation and performance of this Agreement shall be determined in accordance with the laws of the State of New Jersey applicable to contracts made and to be performed wholly within that state except to the extent that Federal law applies. The parties hereto agree that any disputes, claims, disagreements, lawsuits, actions or controversies of any type or nature whatsoever that, directly or indirectly, arise from or relate to this Agreement, including, without limitation, claims relating to the inducement, construction, performance or termination of this Agreement, shall be brought in the state superior courts located in Hudson County, New Jersey or Federal district courts located in Newark, New Jersey, and the parties hereto agree not to challenge the selection of that venue in any such proceeding for any reason, including, without limitation, on the grounds that such venue is an inconvenient forum. The parties hereto specifically agree that service of process may be made, and such service of process shall be effective if made, pursuant to Section 8 hereto.

9. Enforcement Costs. If any legal action or other proceeding is brought for the enforcement of this Agreement, or because of an alleged dispute, breach, default or misrepresentation in connection with any provisions of this Agreement, the successful or prevailing party or parties shall be entitled to recover reasonable attorneys’ fees, court costs and all expenses even if not taxable as court costs (including, without limitation, all such fees, costs and expenses incident to appeals), incurred in that action or proceeding, in addition to any other relief to which such party or parties may be entitled.

10. Remedies Cumulative. No remedy herein conferred upon any party is intended to be exclusive of any other remedy, and each and every such remedy shall be cumulative and shall be in addition to every other remedy given hereunder or now or hereafter existing at law, in equity, by statute, or otherwise. No single or partial exercise by any party of any right, power or remedy hereunder shall preclude any other or further exercise thereof.

13. JURY TRIAL. EACH OF THE PLEDGEE AND THE PLEDGOR HEREBY KNOWINGLY, VOLUNTARILY AND INTENTIONALLY WAIVES THE RIGHT WHICH IT MAY HAVE TO A TRIAL BY JURY OF ANY CLAIM, DEMAND, ACTION OR CAUSE OF ACTION BASED HEREON, OR ARISING OUT OF, UNDER OR IN ANY WAY CONNECTED WITH THE DEALINGS BETWEEN PLEDGEE AND PLEDGOR, THIS PLEDGE AND ESCROW AGREEMENT OR ANY DOCUMENT EXECUTED IN CONNECTION HEREWITH, OR ANY COURSE OF CONDUCT, COURSE OF DEALING, STATEMENTS (WHETHER ORAL OR WRITTEN) OR ACTIONS OF ANY PARTY HERETO OR THERETO IN EACH CASE WHETHER NOW EXISTING OR HEREAFTER ARISING, AND WHETHER IN CONTRACT, TORT, EQUITY OR OTHERWISE.


	CORNELL CAPITAL PARTNERS, LP

	By: Yorkville Advisors, LLC
	Its: General Partner

	By:	/s/ MARK ANGELO
		Name: Mark Angelo
		Title: Portfolio Manager


	TECH LABORATORIES, INC.

	By:	/s/ JOHN KING
		Name: John King
		Title: Chief Executive Officer


	ESCROW AGENT

	By:	/s/ DAVID GONZALEZ
		Name: David Gonzalez, Esq.

With copy to:	David Gonzalez, Esq.
	101 Hudson Street, Suite 3700
	Jersey City, NJ 07302
	Telephone: (201) 985-8300
	Facsimile: (201) 985-1964