EXHIBIT 99.1

NEITHER THIS SECURITY NOR THE SECURITIES INTO WHICH THIS SECURITY IS EXERCISABLE
HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE
SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN
EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN
AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT.

                          COMMON STOCK PURCHASE WARRANT

                  To Purchase 400,000 Shares of Common Stock of

                        PURADYN FILTER TECHNOLOGIES, INC.

         THIS COMMON STOCK PURCHASE WARRANT CERTIFIES that, for value received,
PLAINFIELD SPECIAL SITUATIONS MASTER FUND LIMITED (the "Holder"), is entitled,
upon the terms and subject to the limitations on exercise and the conditions
hereinafter set forth, at any time on or after the Initial Exercise Date (as
defined in Section 3) and on or prior to the close of business on June 17, 2008
(the "Termination Date") but not thereafter, to subscribe for and purchase from
PURADYN FILTER TECHNOLOGIES, INC., a corporation incorporated in the State of
Delaware (the "Company"), up to the number of full shares indicated above (the
"Warrant Shares") of common stock of the Company (the "Common Stock"). The
purchase price of each share of Common Stock (the "Exercise Price") under this
Warrant shall be $0.80, subject to adjustment hereunder. The Exercise Price and
the number of Warrant Shares for which the Warrant is exercisable shall be
subject to adjustment as provided herein. CAPITALIZED TERMS USED AND NOT
OTHERWISE DEFINED HEREIN SHALL HAVE THE MEANINGS SET FORTH IN THAT CERTAIN
SUBSCRIPTION AGREEMENT BETWEEN THE COMPANY AND THE HOLDER.

                  1. Title to Warrant. Prior to the Termination Date and subject
to compliance with applicable laws and Section 7 of this Warrant, this Warrant
and all rights hereunder are transferable, in whole or in part, at the office or
agency of the Company by the Holder in person or by duly authorized attorney,
upon surrender of this Warrant together with the Assignment Form annexed hereto
properly endorsed. The transferee shall sign an investment letter in form and
substance reasonably satisfactory to the Company.

                  2. Authorization of Shares. The Company covenants that all
Warrant Shares which may be issued upon the exercise of the purchase rights
represented by this Warrant will, upon exercise of the purchase rights
represented by this Warrant, be duly authorized, validly issued, fully paid and
nonassessable and free from all taxes, liens and charges in respect of the issue
thereof (other than taxes in respect of any transfer occurring contemporaneously
with such issue).


<PAGE>

                  3. Exercise of Warrant.

                           (a) Exercise of the purchase rights represented by
         this Warrant may be made at any time or times on or after the earlier
         of (i) the date immediately preceding the date the Company effects any
         extraordinary dividend, any reclassification or reorganization of the
         Company's capital stock, any merger or acquisition (where the Company
         is not the surviving corporation or where there is a change in or
         distribution with respect to the Common Stock of the Company) or any
         sale of all or substantially all of the Company's assets and (ii) June
         17, 2005 (the "Initial Exercise Date") and on or before the Termination
         Date by the surrender of this Warrant and the Notice of Exercise Form
         annexed hereto duly executed, at the office of the Company (or such
         other office or agency of the Company as it may designate by notice in
         writing to the registered Holder at the address of such Holder
         appearing on the books of the Company) and upon payment of the Exercise
         Price of the shares thereby purchased by wire transfer or cashier's
         check drawn on a United States bank, the Holder shall be entitled to
         receive a certificate for the number of Warrant Shares so purchased.
         Certificates for shares purchased hereunder shall be delivered to the
         Holder within three (3) Trading Days after the date on which this
         Warrant shall have been exercised as aforesaid. This Warrant shall be
         deemed to have been exercised and such certificate or certificates
         shall be deemed to have been issued, and the Holder or any other person
         so designated to be named therein shall be deemed to have become a
         holder of record of such shares for all purposes, as of the date the
         Warrant has been exercised by payment to the Company of the Exercise
         Price and all taxes required to be paid by the Holder, if any, pursuant
         to Section 5 prior to the issuance of such shares, have been paid. In
         the event of an extraordinary dividend, the Holder will be entitled to
         receive its pro rata share of such extraordinary dividend provided that
         the Holder exercises the Warrants prior to the date of such
         extraordinary dividend (regardless of what the record date for such
         extraordinary dividend is. The Company covenants that it will provide
         Holder with as much prior notice as is reasonably practicable as to the
         occurrence of any event that would cause the Initial Exercise Date to
         occur.

                           (b) If this Warrant shall have been exercised in
         part, the Company shall, at the time of delivery of the certificate or
         certificates representing Warrant Shares, deliver to Holder a new
         Warrant evidencing the rights of Holder to purchase the unpurchased
         Warrant Shares called for by this Warrant, which new Warrant shall in
         all other respects be identical with this Warrant.

                  4. No Fractional Shares or Scrip. No fractional shares or
scrip representing fractional shares shall be issued upon the exercise of this
Warrant. As to any fraction of a share which Holder would otherwise be entitled
to purchase upon such exercise, the Company shall pay a cash adjustment in
respect of such final fraction in an amount equal to such fraction multiplied by
the Exercise Price.

                  5. Charges, Taxes and Expenses. Issuance of certificates for
Warrant Shares shall be made without charge to the Holder for any issue or
transfer tax or other incidental expense in respect of the issuance of such
certificate, all of which taxes and expenses shall be paid by the Company, and
such certificates shall be issued in the name of the Holder or in such name or

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<PAGE>

names as may be directed by the Holder; provided, however, that in the event
certificates for Warrant Shares are to be issued in a name other than the name
of the Holder, this Warrant when surrendered for exercise shall be accompanied
by the Assignment Form attached hereto duly executed by the Holder; and the
Company may require, as a condition thereto, the payment of a sum sufficient to
reimburse it for any transfer tax incidental thereto.

                  6. Closing of Books. The Company will not close its
stockholder books or records in any manner that prevents the timely exercise of
this Warrant, pursuant to the terms hereof.

                  7. Transfer, Division and Combination.

                           (a) Subject to compliance with any applicable
         securities laws and the conditions set forth in Sections 1 and 7(e)
         hereof, this Warrant and all rights hereunder are transferable, in
         whole or in part, upon surrender of this Warrant at the principal
         office of the Company, together with a written assignment of this
         Warrant substantially in the form attached hereto duly executed by the
         Holder or its agent or attorney and funds sufficient to pay any
         transfer taxes payable upon the making of such transfer. Upon such
         surrender and, if required, such payment, the Company shall execute and
         deliver a new Warrant or Warrants in the name of the assignee or
         assignees and in the denomination or denominations specified in such
         instrument of assignment, and shall issue to the assignor a new Warrant
         evidencing the portion of this Warrant not so assigned, and this
         Warrant shall promptly be cancelled. A Warrant, if properly assigned,
         may be exercised by a new holder for the purchase of Warrant Shares
         without having a new Warrant issued.

                           (b) This Warrant may be divided or combined with
         other Warrants upon presentation hereof at the aforesaid office of the
         Company, together with a written notice specifying the names and
         denominations in which new Warrants are to be issued, signed by the
         Holder or its agent or attorney. Subject to compliance with Section
         7(a), as to any transfer which may be involved in such division or
         combination, the Company shall execute and deliver a new Warrant or
         Warrants in exchange for the Warrant or Warrants to be divided or
         combined in accordance with such notice.

                           (c) The Company shall prepare, issue and deliver at
         its own expense (other than transfer taxes) the new Warrant or Warrants
         under this Section 7.

                           (d) The Company agrees to maintain, at its aforesaid
         office, books for the registration and the registration of transfer of
         the Warrants.

                           (e) If, at the time of the surrender of this Warrant
         in connection with any transfer of this Warrant, the transfer of this
         Warrant shall not be registered pursuant to an effective registration
         statement under the Securities Act and under applicable state
         securities or blue sky laws, the Company may require, as a condition of
         allowing such transfer (i) that the Holder or transferee of this
         Warrant, as the case may be, furnish to the Company a written opinion
         of counsel (which opinion shall be in form, substance and scope
         customary for opinions of counsel in comparable transactions) to the
         effect that such transfer may be made without registration under the
         Securities Act and under applicable state securities or blue sky laws,
         (ii) that the holder or transferee execute and deliver to the Company
         an investment letter in form and substance reasonably acceptable to the


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         Company and (iii) that the transferee be an "accredited investor" as
         defined in Rule 501(a) promulgated under the Securities Act.

                  8. No Rights as Shareholder until Exercise. This Warrant does
not entitle the Holder to any voting rights or other rights as a shareholder of
the Company prior to the exercise hereof. Upon the surrender of this Warrant and
the payment of the aggregate Exercise Price, the Warrant Shares so purchased
shall be and be deemed to be issued to such Holder as the record owner of such
shares as of the close of business on the later of the date of such surrender or
payment.

                  9. Loss, Theft, Destruction or Mutilation of Warrant. The
Company covenants that upon receipt by the Company of evidence reasonably
satisfactory to it of the loss, theft, destruction or mutilation of this Warrant
or any stock certificate relating to the Warrant Shares, and in case of loss,
theft or destruction, of indemnity or security reasonably satisfactory to it
(which, in the case of the Warrant, shall not include the posting of any bond),
and upon surrender and cancellation of such Warrant or stock certificate, if
mutilated, the Company will make and deliver a new Warrant or stock certificate
of like tenor and dated as of such cancellation, in lieu of such Warrant or
stock certificate.

                  10. Saturdays, Sundays, Holidays, etc. If the last or
appointed day for the taking of any action or the expiration of any right
required or granted herein shall be a Saturday, Sunday or a legal holiday, then
such action may be taken or such right may be exercised on the next succeeding
day not a Saturday, Sunday or legal holiday.

                  11. Adjustments of Exercise Price and Number of Warrant
Shares.

                           (a) Stock Splits, etc. The number and kind of
         securities purchasable upon the exercise of this Warrant and the
         Exercise Price shall be subject to adjustment from time to time upon
         the happening of any of the following. In case the Company shall (i)
         pay a dividend in shares of Common Stock or make a distribution in
         shares of Common Stock to holders of its outstanding Common Stock, (ii)
         subdivide its outstanding shares of Common Stock into a greater number
         of shares, (iii) combine its outstanding shares of Common Stock into a
         smaller number of shares of Common Stock, or (iv) issue any shares of
         its capital stock in a reclassification of the Common Stock, then the
         number of Warrant Shares purchasable upon exercise of this Warrant
         shall be increased or decreased in the same proportion as the number of
         shares outstanding immediately prior to the event described in
         subparagraphs (i), (ii), (iii) or (iv) bears to the number of shares
         outstanding immediately following such event. Upon each such adjustment
         of the kind and number of Warrant Shares or other securities of the
         Company which are purchasable hereunder, the Holder shall thereafter be
         entitled to purchase the number of Warrant Shares or other securities
         resulting from such adjustment at an Exercise Price per Warrant Share
         or other security obtained by multiplying the Exercise Price in effect
         immediately prior to such adjustment by the number of Warrant Shares
         purchasable pursuant hereto immediately prior to such adjustment and
         dividing by the number of Warrant Shares or other securities of the
         Company resulting from such adjustment. An adjustment made pursuant to
         this paragraph shall become effective immediately after the effective
         date of such event retroactive to the record date, if any, for such
         event.

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<PAGE>

                  12. Reorganization, Reclassification, Merger, Consolidation or
Disposition of Assets. In case the Company shall reorganize its capital,
reclassify its capital stock, consolidate or merge with or into another
corporation (where the Company is not the surviving corporation or where there
is a change in or distribution with respect to the Common Stock of the Company),
or sell, transfer or otherwise dispose of all or substantially all its property,
assets or business to another corporation and, pursuant to the terms of such
reorganization, reclassification, merger, consolidation or disposition of
assets, shares of common stock of the successor or acquiring corporation, or any
cash, shares of stock or other securities or property of any nature whatsoever
(including warrants or other subscription or purchase rights) in addition to or
in lieu of common stock of the successor or acquiring corporation ("Other
Property"), are to be received by or distributed to the holders of Common Stock
of the Company, then the Holder shall have the right thereafter to receive, upon
exercise of this Warrant, the number of shares of Common Stock of the successor
or acquiring corporation or of the Company, if it is the surviving corporation,
and Other Property receivable upon or as a result of such reorganization,
reclassification, merger, consolidation or disposition of assets by a holder of
the number of shares of Common Stock for which this Warrant is exercisable
immediately prior to such event. In case of any such reorganization,
reclassification, merger, consolidation or disposition of assets, the successor
or acquiring corporation (if other than the Company) shall expressly assume the
due and punctual observance and performance of each and every covenant and
condition of this Warrant to be performed and observed by the Company and all
the obligations and liabilities hereunder. For purposes of this Section 12,
"common stock of the successor or acquiring corporation" shall include stock of
such corporation of any class which is not preferred as to dividends or assets
over any other class of stock of such corporation and which is not subject to
redemption and shall also include any evidences of indebtedness, shares of stock
or other securities which are convertible into or exchangeable for any such
stock, either immediately or upon the arrival of a specified date or the
happening of a specified event and any warrants or other rights to subscribe for
or purchase any such stock. The foregoing provisions of this Section 12 shall
similarly apply to successive reorganizations, reclassifications, mergers,
consolidations or disposition of assets.

                  13. Voluntary Adjustment by the Company. The Company may at
any time during the term of this Warrant reduce the then current Exercise Price
to any amount and for any period of time deemed appropriate by the Board of
Directors of the Company.

                  14. Notice of Adjustment. Whenever the number of Warrant
Shares or number
         or kind of securities or other property purchasable upon the exercise
         of this Warrant or the Exercise Price is adjusted, as herein provided,
         the Company shall give notice thereof to the Holder, which notice shall
         state the number of Warrant Shares (and other securities or property)
         purchasable upon the exercise of this Warrant and the Exercise Price of
         such Warrant Shares (and other securities or property) after such
         adjustment, setting forth a brief statement of the facts requiring such
         adjustment and setting forth the computation by which such adjustment
         was made.

                  15. Notice of Corporate Action. If at any time:

                           (a) the Company shall take a record of the holders of
         its Common Stock for the purpose of entitling them to receive a
         dividend or other distribution, or any right to subscribe for or
         purchase any evidences of its indebtedness, any shares of stock of any
         class or any other securities or property, or to receive any other
         right, or

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<PAGE>

                           (b) there shall be any capital reorganization of the
         Company, any reclassification or recapitalization of the capital stock
         of the Company or any consolidation or merger of the Company with, or
         any sale, transfer or other disposition of all or substantially all the
         property, assets or business of the Company to, another corporation or,

                           (c) there shall be a voluntary or involuntary
         dissolution, liquidation or winding up of the Company;

then, in any one or more of such cases, the Company shall give to Holder (i) at
least 10 days' prior written notice of the date on which a record date shall be
selected for such dividend, distribution or right or for determining rights to
vote in respect of any such reorganization, reclassification, merger,
consolidation, sale, transfer, disposition, liquidation or winding up, and (ii)
in the case of any such reorganization, reclassification, merger, consolidation,
sale, transfer, disposition, dissolution, liquidation or winding up, at least 10
days' prior written notice of the date when the same shall take place. Such
notice in accordance with the foregoing clause also shall specify (i) the date
on which any such record is to be taken for the purpose of such dividend,
distribution or right, the date on which the holders of Common Stock shall be
entitled to any such dividend, distribution or right, and the amount and
character thereof, and (ii) the date on which any such reorganization,
reclassification, merger, consolidation, sale, transfer, disposition,
dissolution, liquidation or winding up is to take place and the time, if any
such time is to be fixed, as of which the holders of Common Stock shall be
entitled to exchange their Warrant Shares for securities or other property
deliverable upon such disposition, dissolution, liquidation or winding up. Each
such written notice shall be sufficiently given if addressed to Holder at the
last address of Holder appearing on the books of the Company and delivered in
accordance with Section 17(d).

                  16. Authorized Shares. The Company covenants that during the
period the Warrant is outstanding, it will reserve from its authorized and
unissued Common Stock a sufficient number of shares to provide for the issuance
of the Warrant Shares upon the exercise of any purchase rights under this
Warrant. The Company further covenants that its issuance of this Warrant shall
constitute full authority to its officers who are charged with the duty of
executing stock certificates to execute and issue the necessary certificates for
the Warrant Shares upon the exercise of the purchase rights under this Warrant.
The Company will take all such reasonable action as may be necessary to assure
that such Warrant Shares may be issued as provided herein without violation of
any applicable law or regulation, or of any requirements of the Principal Market
upon which the Common Stock may be listed.

                           Except and to the extent as waived or consented to by
the Holder, the Company shall not by any action, including, without limitation,
amending its certificate of incorporation or through any reorganization,
transfer of assets, consolidation, merger, dissolution, issue or sale of
securities or any other voluntary action, avoid or seek to avoid the observance
or performance of any of the terms of this Warrant, but will at all times in
good faith assist in the carrying out of all such terms and in the taking of all
such actions as may be necessary or appropriate to protect the rights of Holder
as set forth in this Warrant against impairment. Without limiting the generality
of the foregoing, the Company will (a) not increase the par value of any Warrant


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Shares above the amount payable therefor upon such exercise immediately prior to
such increase in par value, (b) take all such action as may be necessary or
appropriate in order that the Company may validly and legally issue fully paid
and nonassessable Warrant Shares upon the exercise of this Warrant, and (c) use
commercially reasonable efforts to obtain all such authorizations, exemptions or
consents from any public regulatory body having jurisdiction thereof as may be
necessary to enable the Company to perform its obligations under this Warrant.

                           Before taking any action which would result in an
adjustment in the number of Warrant Shares for which this Warrant is exercisable
or in the Exercise Price, the Company shall obtain all such authorizations or
exemptions thereof, or consents thereto, as may be necessary from any public
regulatory body or bodies having jurisdiction thereof.

                  17. Registration. The Holder acknowledges that (i) neither
this Warrant not the Warrant Shares acquired upon the exercise of this Warrant
have been registered under the Securities Act and may not be sold, assigned,
pledged, transferred or otherwise disposed of absent registration under the
Securities Act or an applicable exemption from the registration requirements of
the Securities Act, (ii) except to the extent set forth in the Registration
Rights Agreement between the Company and the Holder dated as of the date hereof,
the Company has not undertaken to register this Warrant or the Warrant Shares
and (iii) a legend will be placed on all certificates evidencing the Warrant
Shares referring to the restrictions described in this paragraph.

                  18. Miscellaneous.

                           (a) Jurisdiction. This Warrant shall be governed by
         and construed in accordance with the domestic laws of the State of
         Florida without giving effect to any choice or conflict of law
         provision or rule (whether of the State of Florida or any other
         jurisdiction) that would cause the application of the laws of any
         jurisdiction other than the State of Florida. By the Company's delivery
         and the Holder's acceptance of this of this Warrant, the Holder agrees
         with the Company that (i) any dispute or disagreement arising under
         this Warrant shall be resolved by a Federal or State court of competent
         jurisdiction within the County of Palm Beach, State of Florida, and
         (ii) each waives any objection that it may have now or hereafter to the
         venue of any such suit, action or proceeding, and (iii) each
         irrevocably consents to the in personam jurisdiction of any Federal or
         State court of competent jurisdiction within the County of Palm Beach,
         State of Florida in any such suit, action or proceeding.

                           (b) Nonwaiver and Expenses. No course of dealing or
         any delay or failure to exercise any right hereunder on the part of
         Holder shall operate as a waiver of such right or otherwise prejudice
         Holder's rights, powers or remedies, notwithstanding all rights
         hereunder terminate on the Termination Date. If the Company willfully
         and knowingly fails to comply with any provision of this Warrant, which
         results in any material damages to the Holder, the Company shall pay to
         Holder such amounts as shall be sufficient to cover any costs and
         expenses including, but not limited to, reasonable attorneys' fees,
         including those of appellate proceedings, incurred by Holder in
         collecting any amounts due pursuant hereto or in otherwise enforcing
         any of its rights, powers or remedies hereunder.

                                       7
<PAGE>

                           (c) Notices. Any notice, request or other document
         required or permitted to be given or delivered to the Holder by the
         Company shall be delivered to the addresses of the Holder and the
         Company set forth in the Subscription Agreement or at such other
         address as either the Holder or the Company may provide to the other in
         writing.

                           (d) Limitation of Liability. No provision hereof, in
         the absence of any affirmative action by Holder to exercise this
         Warrant or purchase Warrant Shares, and no enumeration herein of the
         rights or privileges of Holder, shall give rise to any liability of
         Holder for the purchase price of any Common Stock or as a stockholder
         of the Company, whether such liability is asserted by the Company or by
         creditors of the Company.

                           (e) Remedies. Holder, in addition to being entitled
         to exercise all rights granted by law, including recovery of damages,
         will be entitled to specific performance of its rights under this
         Warrant. The Company agrees that monetary damages would not be adequate
         compensation for any loss incurred by reason of a breach by it of the
         provisions of this Warrant and hereby agrees to waive the defense in
         any action for specific performance that a remedy at law would be
         adequate.

                           (f) Successors and Assigns. Subject to applicable
         securities laws, this Warrant and the rights and obligations evidenced
         hereby shall inure to the benefit of and be binding upon the successors
         of the Company and the successors and permitted assigns of Holder. The
         provisions of this Warrant are intended to be for the benefit of all
         Holders from time to time of this Warrant and shall be enforceable by
         any such Holder or holder of Warrant Shares.

                           (g) Amendment. This Warrant may be modified or
         amended or the provisions hereof waived only with the written consent
         of the Company and the Holder.

                           (h) Severability. Wherever possible, each provision
         of this Warrant shall be interpreted in such manner as to be effective
         and valid under applicable law, but if any provision of this Warrant
         shall be prohibited by or invalid under applicable law, such provision
         shall be ineffective to the extent of such prohibition or invalidity,
         without invalidating the remainder of such provisions or the remaining
         provisions of this Warrant.

                           (i) Headings. The headings used in this Warrant are
         for the convenience of reference only and shall not, for any purpose,
         be deemed a part of this Warrant.

                              ********************

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         IN WITNESS WHEREOF, the Company has caused this Warrant to be executed
by its officer thereunto duly authorized.

                                         PURADYN FILTER TECHNOLOGIES, INC.



                                         By:
                                            --------------------------
                                               Richard C. Ford
                                               Chief Executive Officer

Date:  June 17, 2005

                                       9
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                               NOTICE OF EXERCISE


To:      puraDYN Filter Technologies, Inc.

         (1) The undersigned hereby elects to purchase ________ Warrant Shares
of puraDYN Filter Technologies, Inc. pursuant to the terms of the attached
Warrant, and tenders herewith payment of the exercise price in full, together
with all applicable transfer taxes, if any.

         (2) Payment of the exercise price in lawful money of the United States
accompanies this Notice of Exercise

         (3) Please issue a certificate or certificates representing said
Warrant Shares in the name of the undersigned or in such other name as is
specified below:

                  ______________________________________________

The Warrant Shares shall be delivered to the following:

                  ______________________________________________

                  ______________________________________________

                  ______________________________________________


         (4) Accredited Investor. The undersigned is an "accredited investor" as
defined in Regulation D promulgated under the Securities Act of 1933, as
amended.

                               [PURCHASER]



                               By:
                                   -------------------------------------

                               Name:
                                    ------------------------------------

                               Title:
                                     -----------------------------------

                               Dated:
                                     -----------------------------------

<PAGE>


                                 ASSIGNMENT FORM


                    (To assign the foregoing warrant, execute
                   this form and supply required information.
                 Do not use this form to exercise the warrant.)



         FOR VALUE RECEIVED, the foregoing Warrant and all rights evidenced
 thereby are hereby assigned to __________ whose address is __________________ .




                                            Dated:  ______________, _______


                                   Holder's Signature:__________________________

                                   Holder's Address:  __________________________

                                                      __________________________



Signature Guaranteed:  ___________________________________________


NOTE: The signature to this Assignment Form must correspond with the name as it
appears on the face of the Warrant, without alteration or enlargement or any
change whatsoever, and must be guaranteed by a bank or trust company. Officers
of corporations and those acting in a fiduciary or other representative capacity
should file proper evidence of authority to assign the foregoing Warrant.