Document:

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                                                                     EXHIBIT 4.2

                            IVIVI TECHNOLOGIES, INC.
                    REDEEMABLE COMMON STOCK PURCHASE WARRANT

NEITHER THIS WARRANT NOR THE SHARES OF COMMON STOCK ISSUABLE UPON EXERCISE OF
THIS WARRANT HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE "ACT"),
AND NEITHER THIS WARRANT NOR SUCH SHARES MAY BE SOLD, ENCUMBERED OR OTHERWISE
TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE ACT
OR AN EXEMPTION FROM SUCH REGISTRATION REQUIREMENT, AND, IF AN EXEMPTION SHALL
BE APPLICABLE, THE HOLDER SHALL HAVE DELIVERED AN OPINION OF COUNSEL ACCEPTABLE
TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED.

   VOID AFTER 5:00 P.M., NEW YORK CITY TIME, ON THE LAST DAY OF THE EXERCISE
                            PERIOD, AS DEFINED BELOW

                REDEEMABLE CLASS A COMMON STOCK PURCHASE WARRANT
                                       OF
                            IVIVI TECHNOLOGIES, INC.

         This is to certify that, FOR VALUE RECEIVED,
____________________("Holder"), is entitled to purchase, subject to the
provisions of this Redeemable Class A Common Stock Purchase Warrant (this
"Warrant"), from Ivivi Technologies, Inc., a New Jersey corporation (the
"Company"), at an initial exercise price per share of $5.70 (the "Initial
Exercise Price"), subject to adjustment as provided in this Warrant, _____
shares of common stock, no par value ("Common Stock"). The shares of Common
Stock deliverable upon such exercise, and as adjusted from time to time, are
hereinafter sometimes referred to as "Warrant Stock," and the exercise price for
the purchase of a share of Common Stock pursuant to this Warrant in effect at
any time and as adjusted from time to time is hereinafter sometimes referred to
as the "Exercise Price."

         1.       ISSUANCE OF WARRANT. This Warrant is being issued pursuant to
that certain Subscription Agreement dated as of the date hereof between the
Company and the Holder (the "Subscription Agreement"). Capitalized terms used
herein and not otherwise defined shall have the meanings ascribed thereto in the
Subscription Agreement. In addition the following terms have the meanings set
forth below:

                  "ADMT Warrant" shall mean the Warrant for the purchase of
______ shares of common stock of ADM Tronics Unlimited, Inc., a Delaware
corporation, which was issued to the Holder concurrently with the issuance of
the IVIVI Warrant. The ADMT Warrant is sometimes referred to herein as the
"Corresponding ADMT Warrant."

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                  "Approved Market" shall mean any public market in the United
States on which the IVIVI Common Stock is trading (it being understood that the
Pink Sheets Quotation Service shall not qualify as an Approved Market for these
purposes).

                  "Convertible Securities" shall mean evidences of indebtedness,
shares of stock or other securities, which are convertible into or exchangeable,
with or without payment of additional consideration in cash or property, for
shares of Common Stock, either immediately or upon the occurrence of a specified
date or a specified event.

                  "Exercise Period" shall mean the period commencing on ________
________ and ending at 5 p.m., eastern time on _________________.

                  "IVIVI Warrant" means this Warrant for the purchase of the
number of shares of Common Stock of the Company noted above.

                  "Permitted Issuances" shall mean: (i) Common Stock issued
pursuant to a stock split or subdivision, (ii) Common Stock issuable or issued
to employees, consultants or directors of the Company directly or pursuant to a
stock plan or other compensation arrangement approved by the Board of Directors
of the Company, provided: however, that such issuances, in the aggregate, shall
be less than 271,000 shares of IVIVI until such time as the shares of Common
Stock underlying the Warrant are registered for resale with the SEC and listed
for trading on an Approved Market, (iii) Common Stock issued or issuable upon
conversion of the Warrants or any other securities exercisable or exchangeable
for, or convertible into shares of Common Stock outstanding as of the date of
this IVIVI Warrant, (iv) shares of Common Stock issuable upon the exercise or
conversion of securities issued to purchasers of notes and warrants in the
Company's private offering completed in December 2004 of an aggregate of
$3,637,500, and (v) shares of Common Stock issued or issuable in a transaction
approved in advance by the holders of more than 50% of the then outstanding
Warrants.

         2.       EXERCISE OF WARRANT/REGISTRATION RIGHTS.

                  (a)      This IVIVI Warrant may be exercised in whole or in
part at any time or from time to time from the date that the Common Stock of the
Company is listed on an Approved Market, and that the shares of Common Stock
issuable upon exercise of this IVIVI Warrant have been registered for resale
with the SEC until the end of the Exercise Period by presentation and surrender
of this IVIVI Warrant and the ADMT Warrants to the Company at its principal
office, or at the office of its stock transfer agent, if any, with the Purchase
Form annexed to this IVIVI Warrant duly executed and accompanied by payment of
the Exercise Price for the number of shares of Common Stock specified in the
Purchase Form in cash (the Holder will receive no consideration for the
surrender of the ADMT Warrant). If this IVIVI Warrant should be exercised in
part only, the Company shall, upon surrender of this IVIVI Warrant (and the ADMT
Warrants) for cancellation, execute and deliver a new IVIVI Warrant (and the
ADMT Warrants) evidencing the rights of the Holder hereof to purchase the
balance of the shares of Common Stock purchasable hereunder. Upon receipt by the
Company of this IVIVI Warrant at its office, or by the stock transfer agent of
the Company at its office, in proper form for exercise, the Holder shall be
deemed to be the holder of record of the shares of Common Stock issuable upon
such exercise, notwithstanding that the stock transfer books of the Company
shall then be closed or that certificates representing such shares of Common
Stock shall not then be actually delivered to the Holder. As soon as practicable
after each exercise of this Warrant, in whole or in part, and in any event
within three (3) business days thereafter, the Company at its expense (including
the payment by it of any applicable issue taxes) will cause to be issued in the
name of and delivered to the Holder hereof or, subject to Section 6 hereof, as
the Holder (upon payment by the Holder of any applicable transfer taxes) may
direct a certificate or certificates for the number of duly authorized, validly
issued, fully paid and nonassessable shares of Common Stock to which the Holder
shall be entitled upon exercise plus, in lieu of any fractional share to which
the Holder would otherwise be entitled, all issuances of Common Stock shall be
rounded up to the nearest whole share.

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                  (b)      The Company's obligations under Section 9 of the
Subscription Agreement with respect to the registration under the Securities Act
of 1933, as amended (the "Act") of the shares issuable upon the exercise of this
IVIVI Warrant are incorporated herein by reference.

                  (c)      The Company has also granted "piggyback" registration
rights to the Holder, as more fully described in the Subscription Agreement
executed as of the date hereof.

         3.       RESERVATION OF SHARES; FRACTIONAL SHARES. The Company hereby
agrees that at all times there shall be reserved for issuance and/or delivery
upon exercise of this Warrant such number of shares of Common Stock as shall be
required for issuance and delivery upon exercise of this Warrant. No fractional
shares or script representing fractional shares shall be issued upon the
exercise of this Warrant. Instead, the Company will round up to the nearest
whole share.

         4.       EXCHANGE, TRANSFER, ASSIGNMENT OR LOSS OF WARRANT. This IVIVI
Warrant is exchangeable, without expense, at the option of the Holder, upon
presentation and surrender hereof (along with the Corresponding ADMT Warrant) to
the Company or at the office of its stock transfer agent, if any, for other
IVIVI Warrants (and Corresponding ADMT Warrants) of different denominations
entitling the holder thereof to purchase in the aggregate the same number of
shares of Common Stock purchasable hereunder. Upon surrender of this IVIVI
Warrant (and Corresponding ADMT Warrant) to the Company or at the office of its
stock transfer agent, if any, with the Assignment Form annexed hereto duly
executed and funds sufficient to pay any transfer tax, the Company shall,
without charge, execute and deliver a new IVIVI Warrant (and Corresponding ADMT
Warrant) in the name of the assignee named in such instrument of assignment and
this IVIVI Warrant (and Corresponding ADMT Warrant) shall promptly be canceled.
In the event the ADMT Warrant is exercised, in whole or in part, the holder of
this IVIVI Warrant shall surrender a proportionate number of IVIVI Warrants
evidenced hereunder to the Company for cancellation. This IVIVI Warrant (and
Corresponding ADMT Warrant) may be divided or combined with other IVIVI Warrants
(and Corresponding ADMT Warrants) which carry the same rights upon presentation
hereof at the office of the Company or at the office of its stock transfer
agent, if any, together with a written notice specifying the names and
denominations in which new IVIVI Warrants (and Corresponding ADMT Warrants) are
to be issued and signed by the Holder hereof. The term "Warrant" and "IVIVI
Warrant" as used herein includes any IVIVI Warrants into which this Warrant may
be divided or exchanged. Upon receipt by the Company of evidence satisfactory to
it of the loss, theft, destruction or mutilation of this Warrant, and (in the
case of loss, theft or destruction) of reasonably satisfactory indemnification,
and upon surrender and cancellation of this Warrant, if mutilated, the Company
will execute and deliver a new Warrant of like tenor. Any such new Warrant
executed and delivered shall constitute an additional contractual obligation on
the part of the Company, whether or not this Warrant so lost, stolen, destroyed,
or mutilated shall be at any time enforceable by anyone.

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         5.       RIGHTS AND OBLIGATIONS OF THE HOLDER. The Holder shall not, by
virtue of this Warrant, be entitled to any rights of a stockholder in the
Company, either at law or equity, and the rights of the Holder are limited to
those expressed in the Warrant and are not enforceable against the Company
except to the extent set forth herein. In addition, no provision hereof, in the
absence of affirmative action by Holder to purchase shares of Common Stock, and
no enumeration herein of the rights or privileges of Holder hereof, shall give
rise to any liability of such Holder for the purchase price of any Common Stock
or as a stockholder of Company, whether such liability is asserted by Company or
by creditors of Company.

         6.       ANTI-DILUTION PROVISIONS. The Exercise Price in effect at any
time and the number and kind of securities purchasable upon exercise of each
Warrant shall be subject to adjustment as follows and the Company shall give
each Holder notice of any event described below which requires an adjustment
pursuant to this Section 6 at the time of such event:

                  (a)      Stock Dividends, Subdivisions and Combinations. If at
any time Company shall:

                           (i)      take a record of the holders of its Common
Stock for the purpose of entitling them to receive a dividend payable in, or
other distribution of, shares of Common Stock,

                           (ii)     subdivide or reclassify its outstanding
shares of Common Stock into a larger number of shares of Common Stock, or

                           (iii)    combine or reclassify its outstanding shares
of Common Stock into a smaller number of shares of Common Stock or otherwise
effect a reverse stock split,

then (i) the number of shares of Common Stock for which this Warrant is
exercisable immediately after the occurrence of any such event shall be adjusted
to equal the number of shares of Common Stock which a record holder of the same
number of shares of Common Stock for which this Warrant is exercisable
immediately prior to the occurrence of such event, or the record date therefor,
whichever is earlier, would own or be entitled to receive after the happening of
such event, and (ii) the Exercise Price(s) shall be adjusted to equal (A) the
Exercise Price immediately prior to such event multiplied by the number of
shares of Common Stock for which this Warrant is exercisable immediately prior
to the adjustment divided by (B) the number of shares for which this Warrant is
exercisable immediately after such adjustment.

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                  (b)      Certain Other Distributions and Adjustments.

                           (i)      If at any time Company shall take a record
of the holders of its Common Stock for the purpose of entitling them to receive
any dividend or other distribution of:

                                    (A)      cash,

                                    (B)      any evidences of its indebtedness,
any shares of its stock or any other securities or property of any nature
whatsoever (other than Convertible Securities or shares of Common Stock), or

                                    (C)      any warrants or other rights to
subscribe for or purchase any evidences of its indebtedness, any shares of its
stock or any other securities or property of any nature whatsoever (other than
Convertible Securities or shares of Common Stock),

then Holder, upon exercise of this Warrant, shall be entitled to receive such
dividend or distribution as if Holder had exercised this Warrant.

                           (ii)     A reclassification of the Common Stock
(other than a change in par value, or from par value to no par value or from no
par value to par value) into shares of Common Stock and shares of any other
class of stock shall be deemed a distribution by Company to the holders of its
Common Stock of such shares of such other class of stock and in such event
Holder shall be entitled to receive such distribution as if Holder had exercised
this Warrant and, if the outstanding shares of Common Stock shall be changed
into a larger or smaller number of shares of Common Stock as a part of such
reclassification, such change shall be deemed a subdivision or combination, as
the case may be, of the outstanding shares of Common Stock within the meaning of
Section 6(a).

                  (c)      Issuance of Additional Shares of Common Stock.

                           (i)      If at any time the Company shall issue or
sell any shares of Common Stock in exchange for consideration in an amount per
share of Common Stock less than the then current Exercise Price, other than
Permitted Issuances, then (A) the Exercise Price shall be adjusted so that it
shall equal the price determined by multiplying the Exercise Price in effect
immediately prior to such event by a fraction, of which the numerator shall be
the number of shares of Common Stock outstanding on the date of issuance plus
the number of additional shares of Common Stock which the aggregate offering
price would purchase based upon the Exercise Price, and of which the denominator
shall be the number of shares of Common Stock outstanding on the date of
issuance plus the number of additional shares of Common Stock issued or issuable
in such offering, and (B) the number of shares of Common Stock for which this
Warrant is exercisable shall be adjusted to equal the product obtained by
multiplying the Exercise Price in effect immediately prior to such issue or sale
by the number of shares of Common Stock for which this Warrant is exercisable
immediately prior to such issue or sale and dividing the product thereof by the
Exercise Price resulting from the adjustment made pursuant to clause (A) above.

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                           (ii)     The provisions of paragraph (i) of this
Section 6(c) shall not apply to any issuance of shares of Common Stock for which
an adjustment is provided under Section 6(a) or 6(b). No adjustment of the
number of shares of Common Stock for which this Warrant shall be exercisable
shall be made under paragraph (i) of this Section 6(c) upon the issuance of any
shares of Common Stock which are issued pursuant to the exercise of any warrants
or other subscription or purchase rights or pursuant to the exercise of any
conversion or exchange rights in any Convertible Securities, if any such
adjustment shall previously have been made upon the issuance of such warrants or
other rights or upon the issuance of such Convertible Securities (or upon the
issuance of any warrant or other rights therefor) pursuant to Section 6(d) or
Section 6(e).

                  (d)      Issuance of Warrants or Other Rights. If at any time
Company shall take a record of the holders of its Common Stock for the purpose
of entitling them to receive a distribution of, or shall in any manner (whether
directly or by assumption in a merger in which Company is the surviving
corporation) issue or sell, any warrants or other rights to subscribe for or
purchase any shares of Common Stock or any Convertible Securities, whether or
not the rights to exchange or convert thereunder are immediately exercisable,
and the price per share for which Common Stock is issuable upon the exercise of
such warrants or other rights or upon conversion or exchange of such Convertible
Securities shall be less than the Trigger Price, then the number of shares for
which this Warrant is exercisable and the Exercise Price shall be adjusted as
provided in Section 6(c) on the basis that the maximum number of shares of
Common Stock issuable pursuant to all such warrants or other rights or necessary
to effect the conversion or exchange of all such Convertible Securities shall be
deemed to have been issued and outstanding and the Company shall be deemed to
have received all the consideration payable therefor, if any, as of the date of
issuance of such warrants or other rights. No further adjustment of the Exercise
Price(s) shall be made upon the actual issuance of such Common Stock or of such
Convertible Securities upon exercise of such warrants or other rights or upon
the actual issuance of such Common Stock upon such conversion or exchange of
such Convertible Securities.

                  (e)      Issuance of Convertible Securities. If at any time
Company shall take a record of the holders of its Common Stock for the purpose
of entitling them to receive a distribution of, or shall in any manner (whether
directly or by assumption in a merger in which Company is the surviving
corporation) issue or sell, any Convertible Securities, whether or not the
rights to exchange or convert thereunder are immediately exercisable, and the
price per share for which Common Stock is issuable upon such conversion or
exchange shall be less than the then current Exercise Price, then the number of
shares of Common Stock for which this Warrant is exercisable and the Exercise
Price shall be adjusted as provided in Section 6(c) on the basis that the
maximum number of shares of Common Stock necessary to effect the conversion or
exchange of all such Convertible Securities shall be deemed to have been issued
and outstanding and Company shall have received all of the consideration payable
therefor, if any, as of the date of issuance of such Convertible Securities. If
any issue or sale of Convertible Securities is made upon exercise of any warrant
or other right to subscribe for or to purchase any such Convertible Securities
for which adjustments of the number of shares of Common Stock for which this
Warrant is exercisable and the Exercise Price have been or are to be made
pursuant to Section 6(d), no further adjustment of the number of shares of
Common Stock for which this Warrant is exercisable and the Exercise Price shall
be made by reason of such record, issue or sale.

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                  (f)      No adjustment in the Exercise Price shall be required
unless such adjustment would require an increase or decrease of at least one
cent ($0.01) in such price; provided, however, that any adjustments which by
reason of this Section 6(f) are not required to be made shall be carried forward
and taken into account in any subsequent adjustment. All calculations under this
Section 6(f) shall be made to the nearest cent or to the nearest one-hundredth
of a share, as the case may be.

                  (g)      The Company may retain a firm of independent public
accountants of recognized standing selected by the Board (who may be the regular
accountants employed by the Company) to make any computation required by this
Section 6.

                  (h)      In the event that at any time, as a result of an
adjustment made pursuant to Section 6(a), (b) or (c) of this Warrant, the Holder
of any Warrant thereafter shall become entitled to receive any shares of the
Company, other than Common Stock, thereafter the number of such other shares so
receivable upon exercise of any Warrant shall be subject to adjustment from time
to time in a manner and on terms as nearly equivalent as practicable to the
provisions with respect to the Common Stock contained in Sections 6(a) through
(g), inclusive, of this Warrant.

                  (i)      Notwithstanding the foregoing, no adjustment shall be
effected due to, or as a result of, any Permitted Issuances.

                  (j)      Other Action Affecting Common Stock. In case at any
time or from time to time Company shall take any action in respect of its Common
Stock, other than any action described in this Section 6, then, unless such
action will not have a materially adverse effect upon the rights of the Holders,
the number of shares of Common Stock or other stock for which this Warrant is
exercisable and/or the purchase price thereof shall be adjusted in such manner
as may be equitable in the circumstances.

         7.       REDEMPTION. Provided the shares of Common Stock issuable upon
exercise of this Warrant are registered with the SEC for resale to the public,
or an exemption to the registration requirements is available to the Holder of
this Warrant under Rule 144, the Company may, at its option, call for the
redemption of the then outstanding IVIVI Warrants in the event that: (i) the
market price of the Common Stock is at or above $31.26 per share for twenty (20)
consecutive trading days ending on the day prior to the date on which the
Company gives notice that it is requiring exercise of the IVIVI Warrants; and
(ii) the shares of Common Stock issuable upon exercise of the IVIVI Warrants are
registered with the SEC for resale to the public, or an exemption to the
registration requirements is available to the holder of the IVIVI Warrants under
Rule 144, provided, however, that the aggregate number of IVIVI Warrants to be
redeemed shall not exceed the cumulative trading volume for the ten (10)
consecutive trading days prior to such redemption within any thirty (30) day
period. The number of IVIVI Warrants to be redeemed shall be pro rata among each
holder of the then outstanding IVIVI Warrants. The redemption price to be paid
by IVIVI shall be equal to $1.00 per IVIVI Warrant. If the IVIVI Warrants are
redeemed, the Corresponding ADMT Warrant shall thereafter be void.

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The Redemption Notice shall be given not later than the thirtieth day before the
date fixed for redemption. On and after the date fixed for redemption, the
Registered Holder shall have no rights with respect to this Warrant except to
receive the redemption price of $1.00 per Warrant upon surrender. If the IVIVI
Warrants are redeemed, a proportionate number of the Corresponding ADMT Warrants
shall thereafter be void.

         8.       OFFICER'S CERTIFICATE. Whenever the Exercise Price(s) shall be
adjusted as required by the provisions of Section 6 of this Warrant, the Company
shall forthwith file in the custody of its Secretary or an Assistant Secretary
at its principal office and with its stock transfer agent, if any, an officer's
certificate showing the adjusted Exercise Price(s) and the adjusted number of
shares of Common Stock issuable upon exercise of each Warrant, determined as
herein provided, setting forth in reasonable detail the facts requiring such
adjustment, including a statement of the number of additional shares of Common
Stock, if any, and such other facts as shall be necessary to show the reason for
and the manner of computing such adjustment. A copy of each such officer's
certificate shall be forwarded to Holder.

         9.       NOTICES TO WARRANT HOLDERS. So long as this Warrant shall be
outstanding, (1) if the Company shall pay any dividend or make any distribution
upon Common Stock, or (2) if the Company shall offer to the holders of Common
Stock for subscription or purchase by them any share of any class or any other
rights, or (3) if any capital reorganization of the Company, reclassification of
the capital stock of the Company, consolidation or merger of the Company with or
into another entity, tender offer transaction for the Company's Common Stock,
sale, lease or transfer of all or substantially all of the property and assets
of the Company, or voluntary or involuntary dissolution, liquidation or winding
up of the Company shall be effected, or (4) if the Company shall file a
registration statement under the Securities Act, on any form other than on Form
S-4 or S-8 or any successor form, then in any such case, the Company shall cause
to be mailed by certified mail to the Holder, at least ten days prior to the
date specified in clauses (1), (2), (3) or (4), as the case may be, of this
Section 9 a notice containing a brief description of the proposed action and
stating the date on which (i) a record is to be taken for the purpose of such
dividend, distribution or rights, or (ii) such reclassification, reorganization,
consolidation, merger, tender offer transaction, conveyance, lease, dissolution,
liquidation or winding up is to take place and the date, if any is to be fixed,
as of which the holders of Common Stock or other securities shall receive cash
or other property deliverable upon such reclassification, reorganization,
consolidation, merger, conveyance, dissolution, liquidation or winding up, or
(iii) such registration statement is to be filed with the Securities and
Exchange Commission.

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         10.      RECLASSIFICATION, REORGANIZATION OR MERGER. In case of any
reclassification, capital reorganization or other change of outstanding shares
of Common Stock of the Company, or in case of any consolidation or merger of the
Company with or into another corporation (other than a merger with a subsidiary
in which merger the Company is the continuing or surviving corporation and which
does not result in any reclassification, capital reorganization or other change
of outstanding shares of Common Stock of the class issuable upon exercise of
this Warrant) or in case of any sale, lease or conveyance of all or
substantially all of the assets of the Company, the Company shall, as a
condition precedent to such transaction, cause effective provisions to be made
so that (i) the Holder shall have the right thereafter by exercising this
Warrant, to purchase the kind and amount of shares of stock and other securities
and property receivable upon such reclassification, capital reorganization and
other change, consolidation, merger, sale or conveyance by a holder of the
number of shares of Common Stock which could have been purchased upon exercise
of this Warrant immediately prior to such reclassification, change,
consolidation, merger, sale or conveyance, and (ii) the successor or acquiring
entity shall expressly assume the due and punctual observance and performance of
each covenant and condition of this Warrant to be performed and observed by
Company and all obligations and liabilities hereunder (including but not limited
to the provisions of Section 3 regarding the increase in the number of shares of
Warrant Stock potentially issuable hereunder). Any such provision shall include
provision for adjustments which shall be as nearly equivalent as possible to the
adjustments provided for in this Warrant. The foregoing provisions of this
Section 10 shall similarly apply to successive reclassifications, capital
reorganizations and changes of shares of Common Stock and to successive
consolidations, mergers, sales or conveyances. In the event that in connection
with any such capital reorganization or reclassification, consolidation, merger,
sale or conveyance, additional shares of Common Stock shall be issued in
exchange, conversion, substitution or payment, in whole in part, for a security
of the Company other than Common Stock, any such issue shall be treated as an
issuance of Common Stock covered by the provisions of Section 6 of this Warrant.

         11.      TRANSFER TO COMPLY WITH THE SECURITIES ACT OF 1933. This
Warrant or the Warrant Stock or any other security issued or issuable upon
exercise of this Warrant may not be sold or otherwise disposed of except as
follows:

                  (i)      to a person who, in the opinion of counsel for the
Company, is a person to whom this Warrant or Warrant Stock may legally be
transferred without registration and without the delivery of a current
prospectus under the Act with respect thereto and then only against receipt of
an agreement of such person to comply with the provisions of this Section 11
with respect to any resale or other disposition of such securities which
agreement shall be satisfactory in form and substance to the Company and its
counsel; or

                  (ii)     to any person upon delivery of a prospectus then
meeting the requirements of the Act relating to such securities and the offering
thereof for such sale or disposition.

         12.      GOVERNING LAW; JURISDICTION. The corporate laws of the State
of New Jersey shall govern all issues concerning the relative rights of the
Company and its stockholders. All issues concerning the construction, validity,
enforcement and interpretation of this Warrant shall be governed by and
construed in accordance with the internal laws of the State of New York without
giving effect to the principles of conflicts of law thereof. The parties hereto
agree that venue in any and all actions and proceedings related to the subject
matter of this Warrant shall be in the state and federal courts in and for New
York, New York, which courts shall have exclusive jurisdiction for such purpose,
and the parties hereto irrevocably submit to the exclusive jurisdiction of such
courts and irrevocably waive the defense of an inconvenient forum to the
maintenance of any such action or proceeding. Service of process may be made in
any manner recognized by such courts. This Warrant and any term hereof may be
changed, waived, discharged or terminated only by an instrument in writing
signed by the party against which enforcement of the change, waiver, discharge
or termination is sought.

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         13.      NOTICES. Any and all notices or other communications or
deliveries required or permitted to be provided hereunder shall be in writing
and shall be deemed given and effective on the earliest of (i) the date of
transmission, if such notice or communication is delivered via facsimile at the
facsimile telephone number specified in this Section prior to 6:30 p.m. (New
York City time) on a Business Day, (ii) the Business Day after the date of
transmission, if such notice or communication is delivered via facsimile at the
facsimile telephone number specified in this Agreement later than 6:30 p.m. (New
York City time) on any date and earlier than 11:59 p.m. (New York City time) on
such date, (iii) the Business Day following the date of mailing, if sent by
nationally recognized overnight courier service, or (iv) upon actual receipt by
the party to whom such notice is required to be given. The address for such
notices and communications shall be as follows:

                                        Ivivi Technologies, Inc.
                                        224-S Pegasus Avenue
                                        Northvale, New Jersey 07647
                                        Attn: President
                                        Tel: (201) 767-6040 Fax: (201) 784-0620

                  or such other address as it shall have specified to the Holder
in writing, with a copy (which shall not constitute notice) to:

                                        Lowenstein Sandler PC
                                        65 Livingston Avenue
                                        Roseland, New Jersey 07068
                                        Attn: Steven M. Skolnick, Esq.
                                        Tel: 973.597.2500; Fax: 973. 597-2477

                  If to the Holder:

         14.      PAYMENT OF TAXES. The Company will pay all documentary stamp
taxes attributable to the issuance of shares of Common Stock underlying this
Warrant upon exercise of this Warrant; provided, however, that the Company shall
not be required to pay any tax which may be payable in respect of any transfer
involved in the registration of any certificate for shares of Common Stock
underlying this Warrant in a name other that of the Holder. The Holder is
responsible for all other tax liability that may arise as a result of holding or
transferring this Warrant or receiving shares of Common Stock underlying this
Warrant upon exercise hereof.

                            [Signature page follows]

                                       10
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IN WITNESS WHEREOF, this Warrant has been duly executed as of February __, 2005.

                                             IVIVI TECHNOLOGIES, INC.

                                             By:
                                                --------------------------------
                                                Name:
                                                Title:

                                       11
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                                 PURCHASE FORM
                                 -------------

                        Dated: _______________, 20_____

         The undersigned hereby irrevocably elects to exercise the within IVIVI
Warrant to the extent of purchasing _____ shares of Common Stock and hereby
makes payment of (i) $___________ in payment of the actual exercise price
thereof and (ii) the surrender to the Company of a proportionate amount of the
Corresponding ADMT Warrant for no consideration.

                                             -----------------------------------

<PAGE>

                     INSTRUCTIONS FOR REGISTRATION OF STOCK
                     --------------------------------------

Name:
     ------------------------------------------------
       (Please typewrite or print in block letters)

Signature:
          -------------------------------------------

Social Security or Employer Identification No.:
                                               -------------------------

<PAGE>

                                ASSIGNMENT FORM
                                ---------------

         FOR VALUE RECEIVED, _______________________________________ hereby
sells, assigns and transfer unto:

Name:
     ------------------------------------------------
       (Please typewrite or print in block letters)

Address:
        ---------------------------------------------

Social Security or Employer Identification No.:
                                               --------------------------

The right to purchase Common Stock represented by this Warrant to the extent of
shares as to which such right is exercisable and does hereby irrevocably
constitute and appoint attorney to transfer the same (along with the
Corresponding ADMT Warrant) on the books of the Company with full power of
substitution.

         Dated: _________________, 200_.

                                             Signature:
                                                       -------------------------

Signature Guaranteed:

-----------------------------------<PAGE>

                                                                     EXHIBIT 4.3

         THE SECURITY REPRESENTED HEREBY, AND THE SECURITIES ISSUABLE
         UPON CONVERSION OR REDEMPTION HEREOF, HAVE NOT BEEN
         REGISTERED UNDER THE SECURITIES ACT OF 1933 OR ANY STATE
         SECURITIES LAWS AND NEITHER SUCH SECURITIES NOR ANY INTEREST
         THEREIN MAY BE OFFERED, SOLD, TRANSFERRED, PLEDGED OR
         OTHERWISE DISPOSED OF EXCEPT PURSUANT TO AN EFFECTIVE
         REGISTRATION STATEMENT UNDER SUCH ACT OR SUCH LAWS OR AN
         EXEMPTION FROM REGISTRATION UNDER SUCH ACT AND SUCH LAWS
         WHICH, IN THE OPINION OF COUNSEL FOR THE HOLDER, WHICH
         COUNSEL AND OPINION ARE REASONABLY SATISFACTORY TO COUNSEL
         FOR THIS COMPANY, IS AVAILABLE.

              ADM TRONICS UNLIMITED, INC./IVIVI TECHNOLOGIES, INC.

           UNSECURED 6% JOINT AND SEVERAL CONVERTIBLE PROMISSORY NOTE

US$___________
                                                               February __, 2005

         FOR VALUE RECEIVED, each of the joint and several obligors ADM Tronics
Unlimited, Inc., a Delaware corporation duly organized and validly existing
under the laws of the State of Delaware ("ADMT") and IVIVI Technologies, Inc., a
New Jersey corporation duly organized and validly existing under the laws of the
State of New Jersey ("IVIVI") (ADMT and IVIVI may hereafter be collectively
referred to as the "JOINT OBLIGORS" or the "COMPANY") jointly and severally
promises to pay to _______________ the registered holder of this unsecured 6%
joint and several convertible promissory note ("NOTE") and its successors and
assigns (the "HOLDER"), the principal sum of ______________________ ($_________)
in accordance with the terms hereof, and to pay interest on the principal sum
outstanding, at the rate of six percent (6%) per annum. Accrual of interest on
the outstanding principal amount shall commence on the date hereof and shall
continue until payment in full of the outstanding principal amount has been made
or duly provided for, or until the entire outstanding principal amount of the
Note has been converted.

         Each of ADMT and IVIVI are jointly and severally liable for the
repayment of the Note which is an unsecured obligation of each of ADMT and
IVIVI.

<PAGE>

         The following is a statement of the rights of the Holder of this Note
and the terms and conditions to which this Note is subject, and to which the
Holder, by acceptance of this Note, agrees:

         1.       Principal Repayment. The outstanding principal amount of this
Note shall be payable by February __, 2010 (the "MATURITY DATE"), unless this
Note has been converted or redeemed as described below.

         2.       Interest. The holders of the Notes are entitled to receive
interest at an annual cumulative rate of six percent (6%) of the principal face
dollar value of the Notes held, payable quarterly (on January 1, April 1, July 1
and October 1, with the first interest payment due on April 1, 2005) in, at the
election of the Joint Obligors (except as set forth below) either: (i) cash, out
of funds legally available therefore, or (ii) prior to June 30, 2005, shares of
IVIVI common stock, no par value per share ("IVIVI COMMON STOCK"), based on a
value of $8.30 per share of IVIVI Common Stock (the "IVIVI CONVERSION PRICE").

         Notwithstanding the foregoing, from and after June 30, 2005, in the
event that: (i) the shares of IVIVI Common Stock issuable upon conversion or
exercise, as the case may be, of the Notes, the ADMT Warrants and the IVIVI
Warrants are not registered with the Securities and Exchange Commission (the
"SEC"), and (ii) the shares of IVIVI Common Stock are not publicly-traded on an
Approved Market, as defined below, (the foregoing, as applied to the shares of
IVIVI Common Stock, being referred to herein as the "NOT REGISTERED"), then the
Holder may elect to receive interest payments in either: (A) cash, out of funds
legally available therefore, or (B) at the election of each holder of Notes, in
(i) a number of shares of IVIVI Common Stock based upon the IVIVI Conversion
Price or (ii) a number of shares of ADMT Common Stock, $.0005 par value per
share ("ADMT COMMON STOCK") based on a value of $0.29 (the "ADMT CONVERSION
PRICE").

         An "APPROVED MARKET" shall mean any public market in the United States
on which the IVIVI Common Stock is trading (it being understood that the Pink
Sheets Quotation Service shall not qualify as an Approved Market for these
purposes).

         In addition, and notwithstanding the foregoing, the Joint Obligors
shall be prohibited from making the above described interest payments in shares
of IVIVI Common Stock or shares of ADMT Common Stock unless the shares so
distributed are registered with the SEC pursuant to an effective registration
statement filed under the Securities Act of 1933, as amended (the "ACT"),
without the prior written consent of the Holder. The Holder, at its sole
election, may defer payments of interest in cash when payable, and elect to
accrue such interest payments in such number of shares of IVIVI Common Stock
based upon the IVIVI Conversion Price or in such number of shares of ADMT Common
Stock based upon the ADMT Conversion Price.

         Interest payments for the period between the date hereof and the next
interest payment date shall be pro rated based upon the actual number of days
elapsed, assuming a 360 day year. The first interest payment to be made on the
Notes will be due on April 1, 2005.

                                       2
<PAGE>

         3.       Conversion.

                  (a)      Through June 30, 2005, the $________ face value of
Note shall initially be convertible at the IVIVI Conversion Price into _________
shares of IVIVI Common Stock, provided IVIVI's Common Stock is listed on an
Approved Market, and the shares of IVIVI Common Stock issuable upon conversion
of the Note have been registered for resale with the SEC. The IVIVI Conversion
Price is subject to the anti-dilution provisions described below.

                  (b)      From and after June 30, 2005, in the event that the
shares of IVIVI Common Stock are Not Registered, then the $________ face value
of Notes shall be convertible, at the option of the holder thereof, into either:
(A) ________ shares of IVIVI Common Stock (based on the IVIVI Conversion Price)
or (B) _________ shares of ADMT Common Stock (based on the ADMT Conversion
Price), subject to the anti-dilution provisions described below.

                  (c)      Mandatory Conversion. Notwithstanding the foregoing,
the Notes and any accrued interest will automatically convert into shares of
IVIVI Common Stock, at the IVIVI Conversion Price, on such date as: (i) a
registration statement covering the shares of IVIVI Common Stock underlying the
Notes and Warrants is ordered effective by the SEC; and (ii) the IVIVI Common
Stock commences trading on an Approved Market.

                  (d)      Mechanics of Conversion. Upon any conversion of this
Note, (i) such principal amount converted and all accrued but unpaid interest
thereon shall be converted and such converted portion of this Note shall become
fully paid and satisfied, (ii) the Holder shall surrender and deliver this Note,
duly endorsed, to ADMT and IVIVI's joint office or such other address which
either ADMT or IVIVI shall jointly designate against delivery of the
certificates representing the new securities of either ADMT or IVIVI, (iii) ADMT
or IVIVI, as applicable, shall promptly deliver a duly executed Note to the
Holder in the principal amount, if any, that remains outstanding after any such
conversion; and (iv) in exchange for all or any portion of the surrendered Note
described in the preceding clause 4(d)(ii), ADMT or IVIVI, as applicable, shall
provide the Holder with irrevocable instructions addressed to ADMT or IVIVI's
transfer and exchange agent, as applicable, to issue such number of
unrestricted, freely tradable shares of either ADMT Common Stock or IVIVI Common
Stock, as the case may be.

                  (e)      Issue Taxes. The Holder shall pay any and all issue
and other taxes that may be payable with respect to any issue or delivery of
shares of either ADMT Common Stock or IVIVI Common Stock on conversion of this
Note pursuant hereto; provided, however, that the Holder shall not be obligated
to pay any transfer taxes resulting from any transfer requested by any holder in
connection with any such conversion.

                  (f)      Elimination of Fractional Interests. No fractional
shares of either ADMT Common Stock or IVIVI Common Stock shall be issued upon
conversion of this Note, nor shall either ADMT or IVIVI be required to pay cash
in lieu of fractional interests, it being the intent of the parties that all
fractional interests shall be eliminated and that all issuances of either ADMT
Common Stock or IVIVI Common Stock shall be rounded up to the nearest whole
share.

                                       3
<PAGE>

         4.       Rights upon Liquidation, Dissolution or Winding Up. In the
event of any liquidation, dissolution or winding up of ADMT or IVIVI, either
voluntary or involuntary, the holders of the Notes shall be entitled to receive,
prior and in preference to any distribution of any of the assets of ADMT or
IVIVI to the holders of any equity security of either ADMT or IVIVI, an amount
equal to the unpaid and unconverted principal face amount of their Notes and any
accrued and unpaid interest thereon. The Holders shall share ratably with the
other unsecured creditors of IVIVI and ADMT if the available assets are not
sufficient to repay the Notes.

         5.       Adjustments and Penalties for Non-Registration.

                  (a)      In the event that either ADMT or IVIVI should at any
time or from time to time, after the date of this Note, fix a record date for
the effectuation of a split or subdivision of the outstanding shares of either
the ADMT Common Stock or IVIVI Common Stock, as applicable, or the determination
of holders of either the ADMT Common Stock or IVIVI Common Stock, as applicable,
entitled to receive a dividend or other distribution payable in additional
shares of either the ADMT Common Stock or IVIVI Common Stock, as applicable, or
other securities or rights convertible into, or entitling the holder thereof to
receive directly or indirectly additional shares of either the ADMT Common Stock
or IVIVI Common Stock, as applicable, (hereinafter referred to as "COMMON STOCK
EQUIVALENTS") without payment of any consideration by such holder for the
additional shares of either the ADMT Common Stock or IVIVI Common Stock, as
applicable, or the Common Stock Equivalents (including the additional shares of
either the ADMT Common Stock or IVIVI Common Stock, as applicable, issuable upon
conversion or exercise thereof), then, as of such record date (or the date of
such dividend, distribution, split or subdivision if no record date is fixed),
then unless the IVIVI Conversion Price or ADMT Conversion Price, as applicable,
is otherwise automatically adjusted in accordance with the terms of this Note,
the IVIVI Conversion Price or ADMT Conversion Price, as applicable, shall be
appropriately decreased so that the number of shares of either the ADMT Common
Stock or IVIVI Common Stock, as applicable, issuable on conversion of this Note
shall be increased in proportion to such increase in the aggregate number of
shares of either the ADMT Common Stock or IVIVI Common Stock, as applicable,
outstanding and those issuable with respect to such Common Stock Equivalents
(see Section 5(c) below).

                  (b)      If the number of shares of either the ADMT Common
Stock or IVIVI Common Stock, as applicable, outstanding at any time after the
date of this Note is decreased by a combination of the outstanding shares of
either the ADMT Common Stock or IVIVI Common Stock, as applicable, then,
following the record date of such combination, the IVIVI Conversion Price or
ADMT Conversion Price, as applicable, shall be appropriately increased so that
the number of shares of either the ADMT Common Stock or IVIVI Common Stock, as
applicable, issuable upon conversion of this Note shall be decreased in
proportion to such decrease in outstanding shares.

                  (c)      In addition, the applicable IVIVI Conversion Price or
ADMT Conversion Price, will be subject to the following adjustment on a weighted
average basis for subsequent issuances of ADMT Common Stock or IVIVI Common
Stock, as applicable, or Common Stock Equivalents, at less than the IVIVI
Conversion Price or ADMT Conversion Price, as applicable, excluding issuances
pursuant to stock option or restricted stock purchase plans approved by the
Board of Directors of the Company (a "NEW OFFERING"):

                           (A x B) + (C x D) / E = F

                                       4
<PAGE>

                           A:       Number of shares of ADMT Common Stock or
                                    IVIVI Common Stock, as applicable, or Common
                                    Stock Equivalents outstanding, including the
                                    shares of Common Stock issuable or
                                    exercisable to all the holders of the Notes
                                    and the Warrants

                           B:       Conversion Price

                           C:       Number of new shares of ADMT Common Stock or
                                    IVIVI Common Stock, as applicable, or Common
                                    Stock Equivalents

                           D:       Share price offered in New Offering

                           E:       Total number of new shares of ADMT Common
                                    Stock or IVIVI Common Stock, as applicable,
                                    or Common Stock Equivalents outstanding
                                    after the New Offering

                           F:       The adjusted Conversion Price, ADMT
                                    Conversion Price or ADMT Conversion Price,
                                    as applicable, for the holders of the Notes
                                    and the Warrants

                  (d)      A merger, consolidation or other corporate
reorganization in which ADMT's stockholders shall receive cash or securities of
another entity, or any transaction in which all or substantially all of the
assets of IVIVI or ADMT are sold shall be treated as a liquidation for purposes
of the liquidation preference. The Holder shall receive prior notice of any of
the foregoing transactions and shall have an opportunity to convert, at their
sole election, the Note prior to the consummation of any such transaction.

                  (e)      The Company has granted certain registration rights
to the Holder, as more fully described in the Subscription Agreement dated as of
the date hereof entered into between the Company and Holder. In the event that
the Company does not timely register either the ADMT Common Stock or the IVIVI
Common Stock underlying this Note, the number of shares of either ADMT Common
Stock or IVIVI Common Stock which Holder shall be entitled to receive upon
conversion shall increase by 1% and 2%, respectively, for each thirty day
period, or part thereof, that such registration default shall continue.

         6.       Affirmative Covenants of ADMT and IVIVI. Each of ADMT and
IVIVI hereby agree that, so long as the Note remains outstanding and unpaid, or
any other amount is owing to the Holder hereunder, each of ADMT and IVIVI will
and with respect to the agreements set forth in this Section 6 hereof will cause
each of ADMT and IVIVI as applicable to:

                  (a)      Corporate Existence and Qualification. Take the
necessary steps to preserve its corporate existence and its right to conduct
business in all states in which the nature of its business requires
qualification to do business. In the event of dispute between ADMT or IVIVI and
the Holder as to when qualification is necessary, the decision of the Holder
shall control.

                  (b)      Financial Information and Compliance Certificates.
Keep its books of account in accordance with good accounting practices, and
until such time as the Holder no longer beneficially owns the Notes or the
Warrants, promptly furnish to the Holder the following financial and other
information: (i) each of the Company's Annual Reports, Quarterly Reports and any
reports filed on Form 8-K filed with the SEC; and (ii) any press release issued
by the Company or any of its subsidiaries.

                                       5
<PAGE>

                  (c)      Within five (5) days of any officer of either ADMT or
IVIVI obtaining knowledge of any Event of Default (as defined in Section 8), if
such Event of Default is then continuing, each of ADMT and IVIVI shall furnish
to the Holder a certificate of the chief financial or accounting officer of each
of ADMT and IVIVI setting forth the details thereof and the action which ADMT
and IVIVI are taking or proposes to take with respect thereto.

                  (d)      Insurance. Maintain insurance with responsible and
reputable insurance companies or associations in such amounts and covering such
risks as is usually carried by companies engaged in similar businesses and
owning similar properties in the same general areas in which ADMT and IVIVI
operates and naming the Holder as an additional insured and loss payee thereon
as its interest may appear.

                  (e)      Preservation of Properties; Compliance with Law.
Maintain and preserve all of its properties which are used or which are useful
in the conduct of its business in good working order and condition, ordinary
wear and tear excepted and comply with the Charter and Bylaws or other
organizational or governing documents of each of ADMT and IVIVI, and any law,
treaty, rule or regulation, or determination of an arbitrator or a court or
other governmental authority, in each case applicable to or binding upon each of
ADMT and IVIVI or any of their property or to which each of ADMT and IVIVI or
any of their property is subject.

                  (f)      Taxes. Duly pay and discharge all taxes or other
claims, which might become a lien upon any of its property except to the extent
that any thereof are being in good faith appropriately contested with adequate
reserves provided therefor.

                  (g)      Notice of Litigation. Promptly notify the Holder in
writing of any litigation, legal proceeding or dispute, other than disputes in
the ordinary course of business or, whether or not in the ordinary course of
business, involving amounts in excess of One Hundred Thousand ($100,000.00)
Dollars, affecting either ADMT, IVIVI or any subsidiary, whether or not fully
covered by insurance, and regardless of the subject matter thereof.

                  (h)      Securities Laws. Each of ADMT and IVIVI agree to
timely file a Form D (or equivalent form required by applicable state law) with
respect to the Notes if and as required under Regulation D and applicable state
securities laws and to provide a copy thereof to the Holder promptly after such
filing. Each of ADMT and IVIVI shall, in a timely fashion, take such action as
is necessary to sell the Notes being sold to the Holder under applicable
securities laws of the United States and the relevant state(s), and shall if
specifically so requested provide evidence of any such action so taken to the
Holder.

                  (i)      Reporting Status. So long as the Holder beneficially
owns any of the Notes, ADMT shall file all reports required to be filed with the
SEC pursuant to the 1934 Act, and ADMT shall not terminate its status as an
issuer required to file reports under the 1934 Act even if the 1934 Act or the
rules and regulations hereunder would permit such termination.

                                       6
<PAGE>

                  (j)      Use of Proceeds. None of the proceeds of the Notes
will be used to reduce or retire any insider note or convertible debt held by an
officer or director of the Company.

                  (k)      Reservation of Shares. Each of ADMT and IVIVI shall
at all times have authorized, and reserved for the purpose of issuance, a
sufficient number of shares of ADMT Common Stock and IVIVI Common Stock issuable
upon conversion of the Notes and exercise of the Warrants to provide for the
issuance of all of such shares. Prior to complete conversion of the Notes and
exercise of the Warrants, ADMT and IVIVI shall not reduce the number of shares
of ADMT Common Stock or IVIVI Common Stock reserved for issuance hereunder
without the written consent of the Holder except for a reduction proportionate
to a reverse stock split effected for a business purpose other than affecting
the requirements of this Section, which reverse stock split affects all shares
of ADMT Common Stock or IVIVI Common Stock equally.

                  (l)      Listing. Upon the Closing, ADMT and IVIVI, as
applicable, shall in accordance with the registration rights granted to the
Holder of the Note secure the listing of the ADMT Common Stock and IVIVI Common
Stock underlying the Notes, the ADMT Warrants and the IVIVI Warrants upon each
national securities exchange or automated quotation system upon which shares of
ADMT Common Stock or IVIVI Common Stock are then listed (subject to official
notice of issuance) and shall maintain such listing of shares of ADMT Common
Stock and IVIVI Common Stock issued under the terms of this Note. The Company
shall at all times comply in all respects with the Company's reporting, filing
and other obligations under the by-laws or rules of the National Association of
Securities Dealers and the OTC Bulletin Board (or such other national securities
exchange or market on which the ADMT Common Stock or IVIVI Common Stock may then
be listed, as applicable).

                  (m)      Prospectus Delivery Requirement. The Holder
understands that the Act requires delivery of a prospectus relating to the ADMT
Common Stock or IVIVI Common Stock in connection with any sale thereof pursuant
to a registration statement under the Act covering any resale by the Holder of
the ADMT Common Stock or IVIVI Common Stock being sold, and the Holder shall
comply with any applicable prospectus delivery requirements of the Act in
connection with any such sale. The Company shall have the unequivocal right to
rely upon the Holder's representation and covenant to deliver a prospectus as
required by applicable law or regulation contained in this Section, and thus,
with respect to any resales by the Holder pursuant to a registration statement,
such ADMT Common Stock or IVIVI Common Stock shall contain a restrictive legend
only if and to the extent required by law. The Holder will indemnify and hold
harmless the Company and its transfer agent for any loss, cost or expense
(including reasonable attorneys' fees) incurred by such parties as a result of
improper actions taken by the Holder in response to the Company's and the
transfer agent's compliance with the provisions of this Section, including
without limitation, the sales of such ADMT Common Stock or IVIVI Common Stock
without delivery of a prospectus as required by applicable law or regulation.

                  (n)      Intentional Acts or Omissions. Neither party shall
intentionally perform any act that if performed, or omit to perform any act
which if omitted to be performed, would prevent or excuse the performance of
this Note or any of the transactions contemplated hereby.

                                       7
<PAGE>

         7.       Negative Covenants of the Company. Each of ADMT and IVIVI
hereby agree that, so long as the Note remains or remain outstanding and unpaid,
or any other amount is owing to the Holder hereunder it will not, nor will it
permit any of its subsidiaries to:

                  (a)      Indebtedness for Borrowed Money. Incur, or permit to
exist, any Indebtedness (as defined below) for borrowed money, with rights
superior to Holder, except in the ordinary course of ADMT or IVIVI's business.
"INDEBTEDNESS" shall mean, with respect to ADMT or IVIVI, (a) all obligations of
ADMT or IVIVI for borrowed money or with respect to deposits or advances of any
kind, (b) all obligations of ADMT or IVIVI evidenced by bonds, debentures, notes
or other similar instruments, (c) all obligations of ADMT or IVIVI for the
deferred purchase price of property or services, except current accounts payable
arising in the ordinary course of business and not overdue beyond such period as
is commercially reasonable for ADMT or IVIVI's business, (d) all obligations of
ADMT or IVIVI under conditional sale or other title retention agreements
relating to property purchased by ADMT or IVIVI, (e) all payment obligations of
ADMT or IVIVI with respect to interest rate or currency protection agreements ,
(f) all obligations of ADMT or IVIVI as an account party under any letter of
credit or in respect of bankers' acceptances, (g) all obligations of any third
party secured by property or assets of such Person (regardless of whether or not
ADMT or IVIVI is liable for repayment of such obligations), (h) all guarantees
of ADMT or IVIVI and (i) the redemption price of all redeemable preferred stock
of ADMT or IVIVI, but only to the extent that such stock is redeemable at the
option of the holder or requires sinking fund or similar payments at any time
prior to the Maturity Date.

                  (b)      Mergers, Acquisitions and Sales of Assets. Enter into
any merger or consolidation or liquidate, windup or dissolve itself or sell,
transfer or lease or otherwise dispose of all or any substantial part of its
assets or technologies (other than sales of inventory and obsolescent equipment
in the ordinary course of business) or acquire by purchase or otherwise the
business or assets of, or stock of, another business entity in excess of
$250,000; except that any subsidiary of ADMT (other than IVIVI) may merge into
or consolidate with any other subsidiary which is wholly-owned by ADMT and any
subsidiary which is wholly-owned by ADMT may merge with or consolidate into ADMT
provided that ADMT is the surviving corporation, or enter into any transaction
or series of related transactions in which more than 50% of the voting power of
IVIVI is disposed of by ADMT.

                  (c)      Loans; Investments. Lend or advance money, credit or
property to or invest in (by capital contribution, loan, purchase or otherwise)
any firm, corporation, or other Person except (i) investments in United States
Government obligations, certificates of deposit of any banking institution with
combined capital and surplus of at least $200,000,000; (iii) accounts receivable
arising out of sales of inventory in the ordinary course of business; and (iii)
loans to subsidiaries.

                  (d)      Dividends and Distributions. Pay dividends or make
any other distribution on shares of the capital stock of either ADMT or IVIVI.

                                       8
<PAGE>

                  (e)      Liens. Create, assume or permit to exist, any lien on
any of its property or assets now owned or hereafter acquired except (i) liens
in favor of the Holder; (ii) other liens incidental to the conduct of its
business or the ownership of its property and assets which were not incurred in
connection with the borrowing of money or the obtaining of advances or credit
and which do not materially impair the use thereof in the operation of its
business; (iii) liens for taxes or other governmental charges which are not
delinquent or which are being contested in good faith and for which a reserve
shall have been established in accordance with generally accepted accounting
principles; and (iv) purchase money liens granted to secure the unpaid purchase
price of any fixed assets purchased within the limitations of Section 7(h)
hereof.

                  (f)      Contingent Liabilities. Assume, endorse, be or become
liable for or guarantee the obligations of any Person, contingently or
otherwise, excluding however, the endorsement of negotiable instruments for
deposit or collection in the ordinary course of business.

                  (g)      Sales of Receivables; Sale - Leasebacks. Sell,
discount or otherwise dispose of notes, accounts receivable or other obligations
owing to ADMT or IVIVI, with or without recourse, except for the purpose of
collection in the ordinary course of business; or sell any asset pursuant to an
arrangement to thereafter lease such asset from the purchaser thereof.

                  (h)      Capital Expenditures; Capitalized Leases. Expend in
the aggregate for the Company and all its subsidiaries in excess of $1,500,000
in any fiscal year for Capital Expenditures (as defined below) including
payments made on account of Capitalized Leases (as defined below). For purposes
of the foregoing, Capital Expenditures shall include payments made on account of
any deferred purchase price or on account of any indebtedness incurred to
finance any such purchase price. "CAPITAL EXPENDITURES" shall mean for any
period, the aggregate amount of all payments made by any Person directly or
indirectly for the purpose of acquiring, constructing or maintaining fixed
assets, real property or equipment which, in accordance with generally accepted
accounting principles, would be added as a debit to the fixed asset account of
such Person, including, without limitation, all amounts paid or payable with
respect to Capitalized Lease Obligations and interest which are required to be
capitalized in accordance with generally accepted accounting principles.
"CAPITALIZED LEASE" shall mean any lease the obligations to pay rent or other
amounts under which constitute Capitalized Lease Obligations. "CAPITALIZED LEASE
OBLIGATIONS" shall mean as to any Person, the obligations of such Person to pay
rent or other amounts under a lease of (or other agreement conveying the right
to use) real and/or personal property which obligations are required to be
classified and accounted for as a capital lease on a balance sheet of such
Person under generally accepted accounting principles and, for purposes of this
Note, the amount of such obligations shall be the capitalized amount thereof,
determined in accordance with generally accepted accounting principles.

                  (i)      Lease Payments. Expend in the aggregate for the
Company and all its subsidiaries in excess of $500,000 in any fiscal year for
the lease, rental or hire of real or personal property pursuant to any rental
agreement therefor, whether an operating lease, capitalized lease or otherwise.

                                       9
<PAGE>

                  (j)      Nature of Business. Materially alter the nature of
ADMT's business or permit IVIVI to engage in any business other than the
business engaged in or proposed to be engaged in on the date of this Note.

                  (k)      Stock of Subsidiaries. Sell or otherwise dispose of
any subsidiary (except in connection with a merger or consolidation of a
subsidiary into ADMT or another subsidiary) or permit a subsidiary to issue any
additional shares of its capital stock except pro rata to its stockholders.

                  (l)      ERISA. (i) Terminate any plan ("PLAN") of a type
described in Section 402l(a) of the Employee Retirement Income Security Act of
l974, as amended from time to time ("ERISA") in respect of which the Company is
an "employer" as defined in Section 3(5) of ERISA so as to result in any
material liability to the Pension Benefit Guaranty Corporation (the "PBGC")
established pursuant to Subtitle A of Title IV of ERISA, (ii) engage in or
permit any person to engage in any "prohibited transaction" (as defined in
Section 406 of ERISA or Section 4975 of the Internal Revenue Code of 1954, as
amended) involving any Plan which would subject the Company to any material tax,
penalty or other liability, (iii) incur or suffer to exist any material
"accumulated funding deficiency" (as defined in Section 302 of ERISA), whether
or not waived, involving any Plan, or (iv) allow or suffer to exist any event or
condition, which presents a material risk of incurring a material liability to
the PBGC by reason of termination of any Plan.

                  (m)      Accounting Changes. Make, or permit any subsidiary to
make any change in their accounting treatment or financial reporting practices
except as required or permitted by generally accepted accounting principles in
effect from time to time.

                  (n)      Transactions with Affiliates. Except as otherwise
specifically set forth in this Note, directly or indirectly purchase, acquire or
lease any property from, or sell, transfer or lease any property to, or enter
into any other transaction, with any Affiliate (as defined below) except in the
ordinary course of business and at prices and on terms not less favorable to it
than those which would have been obtained in an arm's-length transaction with a
non-affiliated third party. "AFFILIATE" as applied to any Person, shall mean any
other Person directly or indirectly through one or more intermediaries
controlling, controlled by, or under common control with, that Person. For the
purposes of this definition, "control" (including with correlative meanings, the
terms "controlling," "controlled by" and "under common control with"), as
applied to any Person, means the possession, directly or indirectly, of the
power to direct or cause the direction of the management and policies of that
Person, whether through the ownership of voting securities or by contract or
otherwise.

         8.       Events of Default. The Note shall become immediately due and
payable at the option of the Holder, without notice or demand, upon any one or
more of the following events or occurrences ("EVENTS OF Default"):

                  (a)      if any portion of the Note is not paid when due;

                                       10
<PAGE>

                  (b)      if any representation or warranty of either ADMT or
IVIVI made in this Note, the Transaction Documents (as defined in the
Subscription Agreement entered into between the Company and Holder), or in any
certificate, report or other financial statement or other instrument or document
delivered pursuant hereto, or any notice, certificate, demand or request
delivered to the Holder pursuant to this Note, the Transaction Documents (as
defined in the Subscription Agreement entered into between the Company and
Holder), or any other document proves to be false or misleading in any material
respect as of the time when the same is made;

                  (c)      if ADMT or IVIVI consummates a transaction which
would cause this Note or any exercise of any Holder's rights under the Notes and
the Warrants (i) to constitute a non-exempt prohibited transaction under ERISA,
(ii) to violate a state statute regulating governmental plans or (iii) otherwise
to subject ADMT or IVIVI to liability for violation of ERISA or such state
statute;

                  (d)      if any final judgment for the payment of money is
rendered against ADMT or IVIVI and ADMT or IVIVI does not discharge the same or
cause it to be discharged or vacated within one hundred twenty (120) days from
the entry thereof, or does not appeal therefrom or from the order, decree or
process upon which or pursuant to which said judgment was granted, based or
entered, and does not secure a stay of execution pending such appeal within one
hundred twenty (120) days after the entry thereof;

                  (e)      subject to the provisions of Section 6(f) hereof, if
any taxes are not paid before delinquency;

                  (f)      if ADMT or IVIVI makes an assignment for the benefit
of creditors or if ADMT or IVIVI generally does not pay its debts as they become
due;

                  (g)      if a receiver, liquidator or trustee of ADMT or IVIVI
is appointed or if ADMT or IVIVI is adjudicated a bankrupt or insolvent, or if
any petition for bankruptcy, reorganization or arrangement pursuant to federal
bankruptcy law, or any similar federal or state law, is filed by or against,
consented to, or acquiesced in, by ADMT or IVIVI or if any proceeding for the
dissolution or liquidation of ADMT or IVIVI is instituted; however, if such
appointment, adjudication, petition or proceeding is involuntary and is not
consented to by ADMT or IVIVI, upon the same not being discharged, stayed or
dismissed within 60 days;

                  (h)      if ADMT or IVIVI defaults under any other mortgage or
security agreement covering any part of its property;

                  (i)      except for specific defaults set forth in this
Section 8, if ADMT or IVIVI defaults in the observance or performance of any
other term, agreement or condition of this Note, the Transaction Documents (as
defined in the Subscription Agreement entered into between the Company and
Holder), and ADMT and IVIVI fail to remedy such default within thirty (30) days
after notice by the Holder to ADMT and IVIVI of such default, or, if such
default is of such a nature that it cannot with due diligence be cured within
said thirty (30) day period, if ADMT and IVIVI fail, within said thirty (30)
days, to commence all steps necessary to cure such default, and fail to complete
such cure within ninety (90) days after the end of such thirty (30) day period;
and

                                       11
<PAGE>

                  (j)      if any of the following exist uncured for forty-five
(45) days following written notice to ADMT or IVIVI in any the Transaction
Documents (as defined in the Subscription Agreement entered into between the
Company and Holder): (i) the failure of any representation or warranty made by
ADMT or IVIVI to be true and correct in all respects or (ii) ADMT or IVIVI fails
to provide the Holder with the written certifications and evidence referred to
in this Note.

         9.       Note Holder Not Deemed a Stockholder. No Holder, as such, of
this Note shall be entitled (prior to conversion or redemption of this Note into
ADMT Common Stock or IVIVI Common Stock, and only then to the extent of such
conversion) to vote or receive dividends or be deemed the holder of shares of
ADMT or IVIVI for any purpose, nor shall anything contained in this Note be
construed to confer upon the Holder hereof, as such, any of the rights at law of
a stockholder of ADMT or IVIVI prior to the issuance to the holder of this Note
of the shares of Common Stock which the Holder is then entitled to receive upon
the due conversion of all or a portion of this Note. Notwithstanding the
foregoing, ADMT and IVIVI will provide the Holder with copies of the same
notices and other information given to the stockholders of ADMT and IVIVI
generally, contemporaneously with the giving thereof to the stockholders.

         10.      Mutilated, Destroyed, Lost or Stolen Notes. In case this Note
shall become mutilated or defaced, or be destroyed, lost or stolen, ADMT and
IVIVI shall execute and deliver a new note of like principal amount in exchange
and substitution for the mutilated or defaced Note, or in lieu of and in
substitution for the destroyed, lost or stolen Note. In the case of a mutilated
or defaced Note, the Holder shall surrender such Note to the Company. In the
case of any destroyed, lost or stolen Note, the Holder shall furnish to the
Company (a) evidence to its satisfaction of the destruction, loss or theft of
such Note and (b) such security or indemnity as may be reasonably required by
the Company to hold the Company harmless.

         11.      Waiver of Demand, Presentment, Etc. The Company hereby
expressly waives demand and presentment for payment, notice of nonpayment,
protest, notice of protest, notice of dishonor, notice of acceleration or intent
to accelerate, bringing of suit and diligence in taking any action to collect
amounts called for hereunder and shall be directly and primarily liable for the
payment of all sums owing and to be owing hereunder, regardless of and without
any notice, diligence, act or omission as or with respect to the collection of
any amount called for hereunder.

         12.      Payment. Except as otherwise provided for herein, all payments
with respect to this Note shall be made in lawful currency of the United States
of America, at the option of the Holder, (i) at the principal office of the
Holder, located at 1415 Kellum Place, Suite 205, Garden City, NY 11530, or such
other place or places as may be reasonably specified by the Holder of this Note
in a written notice to each of ADMT and IVIVI at least ten (10) business days
before a given payment date, or (ii) by mailing a good check in the proper
amount to the Holder at least two days prior to the due date of each payment or
otherwise transferring funds so as to be received by the Holder on the due date
of each such payment; provided, however, that ADMT and IVIVI shall make payment
by wire transfer to an account such Holder may specify in writing to ADMT and
IVIVI at least two days prior to the due date of each payment. Payment shall be
credited first to the accrued interest then due and payable and the remainder
applied to principal. The Holder shall keep a record of each payment of
principal and interest with respect thereto. This Note is not secured.

                                       12
<PAGE>

         13.      Assignment. The rights and obligations of the Company and the
Holder of this Note shall be binding upon, and inure to the benefit of, the
permitted successors, assigns, heirs, administrators and transferees of the
parties hereto. Notwithstanding the foregoing, the Holder may not assign, pledge
or otherwise transfer this Note without the prior written consent of the
Company. Interest and principal are payable only to the registered Holder of
this Note in the Note Register.

         14.      Waiver and Amendment. Any provision of this Note, including,
without limitation, the due date hereof, and the observance of any term hereof,
may be amended, waived or modified (either generally or in a particular instance
and either retroactively or prospectively) only with the written consent of the
Company and the Holder.

         15.      Notices. Any notice, request or other communication required
or permitted hereunder shall be in writing and shall be deemed to have been duly
given if personally delivered or mailed by registered or certified mail, postage
prepaid, or delivered by facsimile transmission, to the Company at the address
or facsimile number set forth herein or to the Holder at its address or
facsimile number set forth in the records of the Company. Any party hereto may
by notice so given change its address for future notice hereunder. Notice shall
conclusively be deemed to have been given when personally delivered or when
deposited in the mail in the manner set forth above and shall be deemed to have
been received when delivered or, if notice is given by facsimile transmission,
when delivered with confirmation of receipt.

         16.      Governing Law. This Note shall be governed by and construed in
accordance with the laws of the State of New York, excluding that body of law
relating to conflicts of laws.

         17.      Severability. If one or more provisions of this Note are held
to be unenforceable under applicable law, such provisions shall be excluded from
this Note, and the balance of this Note shall be interpreted as if such
provisions were so excluded and shall be enforceable in accordance with its
terms.

         18.      Headings. Section headings in this Note are for convenience
only, and shall not be used in the construction of this Note.

                            [SIGNATURE PAGE FOLLOWS]

                                       13
<PAGE>

         IN WITNESS WHEREOF, the Company has caused this Note to be issued as of
the date first above written.

                                             ADM TRONICS UNLIMITED, INC.

                                             By:
                                                 -------------------------------
                                                 Name:
                                                 Title:

                                             IVIVI TECHNOLOGIES, INC.

                                             By:
                                                 -------------------------------
                                                 Name:
                                                 Title:

                                       14

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