SECURITY AGREEMENT


     THIS SECURITY AGREEMENT (this "Agreement") is made as of August 26, 2002 by
and between Avitar,  Inc. a Delaware  corporation  ("Debtor") and Global Capital
Funding Group, L.P., a Delaware limited partner ("Secured Party").


     1. Definitions.

     (a) Certain Defined Terms.  The following  terms, as used herein,  have the
meanings set forth below:

     "Accounts" means all of the following:  (a) accounts  receivable,  contract
rights, book debts, notes, drafts and other obligations and indebtedness arising
from  the  sale,  lease or  exchange  of goods  or  other  property  and/or  the
performance  of services;  (b) rights in, to and under all  purchase  orders for
goods,  services or other property;  (c) rights to any goods,  services or other
property  represented by any of the foregoing (including returned or repossessed
goods and unpaid sellers' rights of rescission, replevin, reclamation and rights
to stoppage in transit);  (d) monies due to or to become due under all contracts
for the  sale,  lease  or  exchange  of  goods  or  other  property  and/or  the
performance  of  services  (whether or not yet earned by  performance);  and (e)
Proceeds of any of the foregoing and all  collateral  security and guaranties of
any kind given by any Person with respect to any of the foregoing.

     "Collateral" has the meaning assigned to that term in Section 3.

     "Documents" means all "documents" (as defined in the UCC) or other receipts
covering, evidencing or representing goods.

     "Equipment"  means all  "equipment"  (as  defined  in the UCC),  including,
without limitation, all machinery,  motor vehicles,  trucks, trailers,  vessels,
aircraft  and  rolling  stock  and  all  parts  thereof  and all  additions  and
accessions thereto and replacements therefore.

     "Event of Default" has the meaning assigned to that term in Section 9.

     "Fixtures" means all plant fixtures,  business fixtures, other fixtures and
storage  office  facilities  and  all  additions  and  accessions   thereto  and
replacements therefore.

     "General  Intangibles"  means all "general  intangibles" (as defined in the
UCC), including,  without limitation:  (a) all agreements,  leases, licenses and
contracts  to which  Debtor is or may  become a party;  (b) all  obligations  or
indebtedness owing to Debtor (other than Accounts) from whatever source arising;
(c) all tax refunds; (d) all intellectual property; (e) all choses in action and
causes of action; and (f) all trade secrets and other  confidential  information
relating to the business of Debtor.

     "Instruments"  means all  "instruments,"  "chattel  paper" or  "letters  of
credit" (each as defined in the UCC) including,  but not limited to,  promissory
notes, drafts, bills of exchange and trade acceptances.

     "Inventory"  means all  "inventory"  (as  defined  in the UCC),  including,
without  limitation,  finished goods,  raw materials,  work in process and other
materials  and supplies  (including  packaging and shipping  materials)  used or
consumed in the  manufacture or production  thereof and returned and repossessed
goods.

     "Investment  Property" means all  "investment  property" (as defined in the
UCC),   including   certificated   and   uncertificated   securities,   security
entitlements,  securities  accounts,  commodity contracts and commodity accounts
(each as defined in the UCC).

     "Note" - means  that  certain  14%  Secured  Promissory  Note of even  date
herewith,  in the original principal amount of $1,250,000,  made and executed by
Debtor and issued to Secured Party, and all amendments and supplements  thereto,
restatements  thereof and renewals,  extensions,  restructuring and refinancings
thereof.

     "Person"  - means  and  includes  natural  persons,  corporations,  limited
partnerships,  general  partnerships,  joint stock  companies,  joint  ventures,
associations,  companies,  trusts, banks, trust companies, land trusts, business
trusts or other  organizations,  whether or not legal entities,  and governments
and agencies and political subdivisions thereof.

     "Proceeds"  - means all  proceeds  of,  and all other  profits,  rentals or
receipts, in whatever form, arising from the collection,  sale, lease, exchange,
assignment,  licensing  or  other  disposition  of,  or  realization  upon,  any
Collateral including,  without limitation,  all claims against third parties for
loss of, damage to or destruction of, or for proceeds payable under, or unearned
premiums with respect to,  policies of insurance with respect to any Collateral,
and any condemnation or requisition payments with respect to any Collateral,  in
each case whether now existing or hereafter arising.

     "Secured Obligations" - has the meaning assigned to that term in Section 4.

     "Security  Interests" - means the security  interests  granted  pursuant to
Section  3, as well as all other  security  interests  created  or  assigned  as
additional  security for the Secured  Obligations  pursuant to the provisions of
this Agreement.

     "Securities  Purchase  Agreement" - means that certain Securities  Purchase
Agreement of even date herewith, by and between Debtor and Secured Party.

     "UCC" - means the Uniform  Commercial  Code as in effect on the date hereof
in the  State of  ________________,  provided  that if by  reason  of  mandatory
provisions of law, the perfection or the effect of perfection or  non-perfection
of the Security  Interest in any  Collateral or the  availability  of any remedy
hereunder  is governed by the Uniform  Commercial  Code as in effect on or after
the date hereof in any other  jurisdiction,  "UCC" means the Uniform  Commercial
Code as in effect in such other  jurisdiction  for  purposes  of the  provisions
hereof relating to such perfection or effect of perfection or  non-perfection or
availability of such remedy.

     2. Other Definition  Provisions.  References to "Sections",  "subsections",
"Exhibits"  and  "Schedules"  shall be to  Sections,  subsections,  Exhibits and
Schedules,   respectively,  of  this  Agreement  unless  otherwise  specifically
provided.  Any of the terms  defined in  Section  1(a) may,  unless the  context
otherwise  requires,  be used in the  singular  or the plural  depending  on the
reference.  All  references  to statutes and related  regulations  shall include
(unless otherwise  specifically  provided herein) any amendments of same and any
successor statutes and regulations.

     3. Grant of Security Interests

     In order to secure the payment and  performance of the Secured  Obligations
in accordance  with the terms thereof,  Debtor hereby grants to Secured Party, a
continuing  security interest in and to all right,  title and interest of Debtor
in the collateral  (and any Proceeds  therefrom)  described on Exhibit A hereto,
whether  now owned or  existing  or  hereafter  acquired  or arising  (all being
collectively referred to as the "Collateral").

     4. Security for Obligations

     This  Agreement  secures  the  payment and  performance  of the  Securities
Purchase Agreement and the Note, and all renewals, extensions, restructuring and
refinancings thereof (the "Secured Obligations").

     5.  Representations  and  Warranties.  Debtor  represents  and  warrants as
follows:

          (a)  Binding  Obligation.  This  Agreement  is the  legally  valid and
     binding obligation of Debtor, enforceable against Debtor in accordance with
     its terms, except as enforcement may be limited by bankruptcy,  insolvency,
     reorganization,   moratorium,  or  similar  laws  or  equitable  principles
     relating to or limiting creditor's rights generally.

          (b) Ownership of Collateral. Debtor owns the Collateral free and clear
     of any lien,  security  interest or  encumbrance.  No  effective  financing
     statement  or other  form of lien  notice  covering  all or any part of the
     Collateral is on file in any recording office.

          (c) Office Locations; Debtor Names.

               (i) As of the date hereof, the chief place of business, the chief
          executive  office  and the  office  where  Debtor  keeps its books and
          records is located at the place specified on Schedule  5(d)(i) hereto.
          Except as set forth on Schedule 5(d)(i), Debtor has not maintained any
          other  address at any time  during the five years  preceding  the date
          hereof.

               (ii) Debtor does not do business nor, as of the date hereof,  has
          it done business  during the past five years under any corporate name,
          trade name or fictitious  business name except for Debtor's  corporate
          name set forth  above and except as  disclosed  on  Schedule  5(d)(ii)
          hereto.

          (d)  Perfection.  This  Agreement,   together  with  the  UCC  filings
     referenced  herein,  create  to secure  the  Secured  Obligations  a valid,
     perfected and first priority security  interest in the Collateral,  and all
     filings and other  actions  necessary  or  desirable to perfect and protect
     such security interest have been duly taken.

          (e) Governmental Authorizations;  Consents. No authorization, approval
     or other  action  by,  and no notice to or filing  with,  any  governmental
     authority  or  regulatory  body or consent of any other  Person is required
     either (i) for the grant by Debtor of the Security Interests granted hereby
     or for the  execution,  delivery or performance of this Agreement by Debtor
     or (ii) for the  perfection  of or the  exercise  by  Secured  Party of its
     rights and remedies  hereunder  (except as may have been taken by or at the
     direction  of Debtor or Secured  Party)  other than the filing of financing
     statements in connection with the perfection of the Security Interests.

          (f) Value of Collateral.  The aggregate  value of the collateral as of
     the date hereof is equal to not less than $1,250,000.

          (g)  Accurate  Information.  All  information  heretofore,  herein  or
     hereafter  supplied to Secured Party by or on behalf of Debtor with respect
     to the  Collateral  is and will be accurate  and  complete in all  material
     respects.

     6. Further Assurances; Covenants

          (a) Other  Documents and Actions.  Debtor will,  from time to time, at
     its  expense,  promptly  execute and deliver  all further  instruments  and
     documents  and take all further  action that may be necessary or desirable,
     or that  Secured  Party may  reasonably  request,  in order to perfect  and
     protect any security  interest granted or purported to be granted hereby or
     to enable  Secured  Party to exercise  and enforce its rights and  remedies
     hereunder with respect to any Collateral.  Without  limiting the generality
     of the  foregoing,  Debtor  will:  (i) execute and file such  financing  or
     continuation statements,  or amendments thereto, and such other instruments
     or notices,  as may be  necessary  or  desirable,  or as Secured  Party may
     reasonably request, in order to perfect and preserve the security interests
     granted or purported to be granted  hereby;  (ii) at any  reasonable  time,
     upon demand by Secured Party exhibit the Collateral to allow  inspection of
     the Collateral by Secured Party or persons designated by Secured Party; and
     (iii)  upon  Secured  Party's  request,  appear in and defend any action or
     proceeding that may affect  Debtor's title to or Secured  Party's  security
     interest in the Collateral.

          (b) Secured Party Authorized.  Debtor hereby authorizes  Secured Party
     to file one or more financing or  continuation  statements,  and amendments
     thereto,  relating  to all or  any  part  of  the  Collateral  without  the
     signature of Debtor where permitted by law.

          (c)  Corporate  or Name  Change.  Debtor  will  notify  Secured  Party
     promptly  in writing  at least 30 days prior to (a) any change in  Debtor's
     name and (b) Debtor's commencing the use of any trade name, assumed name or
     fictitious name.

          (d) Business  Locations.  Debtor shall give Secured  Party thirty (30)
     days' prior written  notice of any change in its chief place of business or
     of any  new  location  of  business  or any  new  location  for  any of the
     Collateral.  With respect to any new location  (which in any event shall be
     within the continental United States),  Debtor shall execute such documents
     and take such  actions as  Secured  Party  reasonably  deems  necessary  to
     perfect and protect the Security Interests.

          (e) Bailees.  No Collateral  shall at any time be in the possession or
     control  of any  warehouseman,  bailee or  Debtor's  agents  or  processors
     without  Secured Party's prior written consent and unless Secured Party, if
     Secured Party has so requested,  has received  warehouse receipts or bailee
     letters reasonably  satisfactory to Secured Party prior to the commencement
     of such storage.  Debtor shall,  upon the request of Secured Party,  notify
     any  such  warehouseman,   bailee,  agent  or  processor  of  the  Security
     Interests.

          (f)  Insurance.  Debtor shall  maintain  insurance with respect to the
     Collateral  of types  and in  amounts  that  are  customary  for  similarly
     situated businesses. Debtor hereby directs all insurers under such policies
     of insurance  with  respect to its assets to pay all  material  proceeds of
     such insurance policies to Secured Party.

          (g) Taxes and Claims.  Debtor will pay (i) all taxes,  assessments and
     other  governmental  charges imposed upon the Collateral before any penalty
     accrues thereon and (ii) all claims (including claims for labor,  services,
     materials  and supplies) for sums that have become due and payable and that
     by law have or may  become a lien  upon any of the  Collateral  before  any
     penalty or fine is incurred  with respect  thereto;  provided  that no such
     tax,  charge or claim need be paid if a Debtor is  contesting  same in good
     faith  by  appropriate   proceedings  promptly  instituted  and  diligently
     conducted and if Debtor has established  such reserve or other  appropriate
     provision,  if any,  as shall be  required  in  conformity  with  generally
     accepted accounting principles consistently applied.

          (h) Collateral Description. Debtor will furnish to Secured Party, from
     time to time,  statements and schedules further  identifying and describing
     the Collateral and such other reports in connection  with the Collateral as
     Secured Party may reasonably request, all in reasonable detail.

          (i) Use of Collateral. Debtor will not use or permit any Collateral to
     be used  unlawfully or in violation of any  provision of this  Agreement or
     any applicable  statue,  regulation or ordinance or any policy of insurance
     covering any of the Collateral.

          (j) Records of  Collateral.  Debtor shall keep full and accurate books
     and records  relating to the  Collateral  and shall stamp or otherwise mark
     such books and  records  in such  manner as  Secured  Party may  reasonably
     request   indicating  that  the  Collateral  is  subject  to  the  Security
     Interests.

          (k) Other Information.  Debtor will, promptly upon request, provide to
     Secured  Party all  information  and  evidence  it may  reasonably  request
     concerning the Collateral to enable Secured Party to enforce the provisions
     of this Agreement.

     7. Secured Party  Appointed  Attorney-in-Fact.  Debtor  hereby  irrevocably
appoints Secured Party as its attorney-in-fact, with full authority in the place
and stead of Debtor and in the name of Debtor, Secured Party or otherwise,  from
time to time in Secured Party's discretion to take any action and to execute any
instrument  that  Secured  Party  may deem  necessary  or  advisable  after  the
occurrence and during the  continuation of an Event of Default to accomplish the
purposes of this Agreement, including, without limitation:

          (a) to obtain  and  adjust  insurance  required  to be paid to Secured
     Party;

          (b) to ask, demand, collect, sue for, recover,  compound,  receive and
     give  acquittance and receipts for monies due and to become due under or in
     respect of any of the Collateral;

          (c) to file any claims or take any action or institute any proceedings
     that Secured Party may deem  necessary or desirable  for the  collection of
     any of the  Collateral  or otherwise to enforce the rights of Secured Party
     with respect to any of the Collateral;

          (d) to pay or  discharge  taxes or liens,  levied  or  placed  upon or
     threatened against the Collateral, the legality or validity thereof and the
     amounts  necessary to discharge  the same to be determined by Secured Party
     in its sole  discretion,  and such payments made by Secured Party to become
     obligations  of Debtor,  due and  payable  immediately  without  demand and
     secured by the Security Interests; and

          (e)  generally to sell,  transfer,  pledge,  make any  agreement  with
     respect  to or  otherwise  deal  with any of the  Collateral  as fully  and
     completely as though  Secured Party were the absolute owner thereof for all
     purposes, and to do, at Secured Party's option and Debtor's expense, at any
     time or from time to time,  all acts and things  that  Secured  Party deems
     necessary to protect, preserve or realize upon the Collateral.

Neither Secured Party nor any Person designated by Secured Party shall be liable
for any acts or omissions or for any error of judgment or mistake of fact or law
other than as a result of Secured  Party's or such Person's gross  negligence or
willful misconduct.  This power, being coupled with an interest,  is irrevocable
so long as this Agreement shall remain in force.

     8. Transfers and Other Liens

     Debtor shall not without Secured Party's prior written consent:

          (a) Sell,  assign (by  operation  of law or  otherwise)  or  otherwise
     dispose of, or grant any option with respect to, any of the Collateral.

          (b)  Create or suffer to exist any lien,  security  interest  or other
     charge or  encumbrance  upon or with  respect to any of the  Collateral  to
     secure  indebtedness of any Person except for the security interest created
     by this Agreement.

     9. Events of Default.

     The occurrence of any one or more of the following  events shall constitute
an Event of Default by Debtor under this Agreement:

          (a)  General  Default.  Debtor  shall fail to  observe or perform  any
     covenant,  obligation,  term  or  condition  contained  in  the  Securities
     Purchase Agreement, the Note, or this Agreement.

          (b)  Nonpayment.  Debtor shall fail to pay any principal,  interest or
     other amount owing under the Note or Securities Purchase Agreement when and
     as the same shall be due and payable.

          (c) Material  Misrepresentations.  Any  representation or warranty set
     forth herein shall prove to be false in any material respect.

          (d) Going Concern.  Debtor shall terminate its corporate  existence or
     shall cease to operate as a going concern.

          (e) Judgments.  A judgment shall be entered against either Debtor or a
     warrant of execution or similar  process shall be issued or levied  against
     its property and within  thirty (30) days after such  judgment,  warrant or
     process shall not have been paid in full or proper appeal of the same made.

          (f) Debtor Relief - Voluntary.  Debtor shall commence a voluntary case
     or other proceeding  seeking  liquidation,  reorganization  or other relief
     with  respect to itself or its debts under any  bankruptcy,  insolvency  or
     other similar law now or hereafter in effect or seeking the  appointment of
     a trustee, receiver, liquidator,  custodian or other similar official of it
     or any  substantial  part of its  property,  or shall  consent  to any such
     relief or to the  appointment of or taking  possession by any such official
     in an involuntary case or other proceeding  commenced  against it, or shall
     make a general  assignment  for the  benefit  of  creditors,  or shall fail
     generally to pay its debts as they become due, or shall take any  corporate
     action to authorize any of the foregoing.

          (g)  Debtor  Relief  -  Involuntary.  Any  involuntary  case or  other
     proceeding   shall  be  commenced   against  Debtor  seeking   liquidation,
     reorganization  or other  relief with  respect to it or its debts under any
     bankruptcy,  insolvency  or other similar law now or hereafter in effect or
     seeking the appointment of a trustee,  receiver,  liquidator,  custodian or
     other similar official of it or any substantial  part of its property,  and
     such  involuntary  case or other  proceeding  shall remain  undismissed and
     unstayed for a period of thirty (30) days;  or an order for relief shall be
     entered  against  Debtor  under  the  federal  bankruptcy  laws  as  now or
     hereafter in effect.

          (h)  Other.  The  occurrence  any "Event of  Default"  as that term is
     defined in Securities Purchase Agreement.

     10. Remedies

          (a) If any Event of Default  shall have  occurred  and be  continuing,
     Secured Party may declare the entire  outstanding  principal  amount of the
     Note immediately due and payable,  provided that upon the occurrence of any
     Event of  Default  set  forth in  Section  9(f) or  9(g),  the  outstanding
     principal  amount of the Note shall become  automatically  due and payable,
     without any notice, demand or other action on the part of Secured Party.

          (b) If any Event of Default  shall have  occurred  and be  continuing,
     Secured Party may exercise in respect of the Collateral, in addition to all
     other rights and remedies provided for herein or otherwise available to it,
     all the rights and  remedies  of a secured  party on default  under the UCC
     (whether or not the UCC applies to the affected  Collateral)  and also may:
     (i)  require  Debtor to,  and Debtor  hereby  agrees  that it will,  at its
     expense and upon request of Secured Party  forthwith,  assemble all or part
     of the  Collateral  as directed by Secured  Party and make it  available to
     Secured  Party  at a place  to be  designated  by  Secured  Party  which is
     reasonably  convenient  to both parties;  (ii) without  notice or demand or
     legal process, enter upon any premises of Debtor and take possession of the
     Collateral;  (iii)  without  notice  except as  specified  below,  sell the
     Collateral  or any part thereof in one or more parcels at public or private
     sale,  at any of  Secured  Party's  offices or  elsewhere,  at such time or
     times,  for cash,  on credit or for future  delivery,  and at such price or
     prices and upon such other  terms as  Secured  Party may deem  commercially
     reasonable; (iv) notify the obligors on any Accounts or Instruments to make
     payments  thereunder  directly to Secured Party;  and (v) without notice to
     Debtor,  renew,  modify or extend any of the  Accounts and  Instruments  or
     grant waivers or indulgences with respect thereto or accept partial payment
     thereof,  or substitute any obligor thereon, in any manner as Secured Party
     may deem advisable,  without affecting or diminishing  Debtor's  continuing
     obligations  hereunder.  Debtor  agrees that,  to the extent notice of sale
     shall be required  by law, at least ten days'  notice to Debtor of the time
     and place of any public sale or the time after which any private sale is to
     be  made  shall  constitute  reasonable  notification.  At any  sale of the
     Collateral,  if permitted by law,  Secured Party may bid (which bid may be,
     in whole or in part, in the form of cancellation of  indebtedness)  for the
     purchase  of the  Collateral  or any  portion  thereof  for the  account of
     Secured  Party.  Secured  Party shall not be  obligated to make any sale of
     Collateral  regardless  of notice of sale having been given.  Secured Party
     may adjourn any public or private sale from time to time by announcement at
     the time and place  fixed  therefore,  and such sale may,  without  further
     notice, be made at the time and place to which it was so adjourned.  To the
     extent  permitted by law, Debtor hereby  specifically  waives all rights of
     redemption,  stay or  appraisal  which it has or may have under any law now
     existing or hereafter enacted.

          (c) Upon the  occurrence  of an Event of  Default  hereunder,  Secured
     Party shall have the right to enter upon the  premises of Debtor  where the
     Collateral is located (or is believed to be located) without any obligation
     to pay rent to Debtor, or any other place or places where the Collateral is
     believed  to be  located  and kept,  to render  the  Collateral  useable or
     saleable,  to remove the  Collateral  therefrom  to the premises of Secured
     Party or any agent of  Secured  Party for such  time as  Secured  Party may
     desire in order to effectively collect or liquidate the Collateral,  and/or
     to require  Debtor to assemble  the  Collateral  and make it  available  to
     Secured Party at a place or places to be designated by Secured Party.  Upon
     the occurrence of an Event of Default  hereunder,  Secured Party shall have
     the right to take  possession of Debtor's  original  books and records,  to
     obtain access to Debtor's data processing equipment,  computer hardware and
     software relating to the Collateral and to use all of the foregoing and the
     information   contained   therein  in  any  manner   Secured   Party  deems
     appropriate;  and  Secured  Party  shall  have the right to  notify  postal
     authorities  to change the  address for  delivery  of  Debtor's  mail to an
     address designated by Secured Party and to receive, open and dispose of all
     mail addressed to Debtor.

     11. Limitation on Duty of Secured Party with Respect to Collateral.  Beyond
the safe custody  thereof,  Secured Party shall have no duty with respect to any
Collateral in its  possession or control (or in the possession or control of any
agent or bailee) or with respect to any income  thereon or the  preservation  of
rights  against prior parties or any other rights  pertaining  thereto.  Secured
Party  shall be deemed to have  exercised  reasonable  care in the  custody  and
preservation  of the  Collateral in its possession if the Collateral is accorded
treatment substantially equal to that which it accords its own property. Secured
Party  shall not be liable or  responsible  for any loss or damage to any of the
Collateral,  or for any diminution in the value thereof, by reason of the act or
omission of any warehouseman,  carrier,  forwarding  agency,  consignee or other
agent or bailee selected by Secured Party in good faith.

     12. Application of Proceeds. Upon the occurrence and during the continuance
of an Event of Default,  the proceeds of any sale of, or other realization upon,
all or any part of the Collateral  shall be applied:  first, to all fees,  costs
and  expenses  incurred by Secured  Party with  respect to the  Collateral;  and
second, to the Secured  Obligations.  Secured Party shall pay over to Debtor any
surplus and Debtor shall remain liable for any deficiency.

     13. Expenses.  Debtor agrees to pay all insurance expenses and all expenses
of protecting, storing, warehousing, appraising, insuring, handling, maintaining
and shipping the  Collateral,  all costs,  fees and expenses of  perfecting  and
maintaining the Security Interests,  and any and all excise, property, sales and
use  taxes  imposed  by any  state,  federal  or local  authority  on any of the
Collateral,  or with  respect to  periodic  appraisals  and  inspections  of the
Collateral,  or with respect to the sale or other disposition thereof. If Debtor
fails  promptly to pay any portion of the above  expenses when due or to perform
any other  obligation of Debtor under this Agreement,  Secured Party may, at its
option, but shall not be required to, pay or perform the same, and Debtor agrees
to reimburse Secured Party therefore on demand.  All sums so paid or incurred by
Secured Party for any of the foregoing,  any and all other sums for which Debtor
may become  liable  hereunder and all costs and expenses  (including  attorneys'
fees,  legal expenses and court costs) incurred by Secured Party in enforcing or
protecting the Security  Interests or any of their rights or remedies under this
Agreement  shall be payable on demand,  shall  constitute  Secured  Obligations,
shall bear  interest  until paid at the rate  provided  in the Note and shall be
secured by the Collateral.

     14. Termination of Security Interests;  Release of Collateral. Upon payment
in full of all Secured  Obligations,  the Security Interests shall terminate and
all rights to the Collateral  shall revert to Debtor.  Upon such  termination of
the Security Interests or release of any Collateral,  Secured Party will, at the
expense of Debtor,  execute and deliver to Debtor such documents as Debtor shall
reasonably  request to evidence the termination of the Security Interests or the
release of such Collateral, as the case may be.

     15. Notices. Each notice,  communication and delivery under this Agreement:
(a) shall be made in writing  signed by the party  giving it; (b) shall  specify
the section of this  Agreement  pursuant  to which  given;  (c) shall  either be
delivered in person or by telecopier,  a nationally recognized next business day
courier service or Express Mail; (d) unless delivered in person,  shall be given
to the address specified below; (e) shall be deemed to be given (i) if delivered
in person,  on the date  delivered,  (ii) if sent by telecopier,  on the date of
telephonic  confirmation  of receipt,  (iii) if sent by a nationally  recognized
next business day courier  service with all costs paid, on the next business day
after it is  delivered  to such  courier,  or (iv) if sent by Express Mail (with
postage and other fees paid), on the next business day after it is mailed.  Such
notice shall not be effective  unless copies are provided  contemporaneously  as
specified  below,  but neither the manner nor the time of giving notice to those
to whom  copies are to be given  (which  need not be the same as the  addressee)
shall  control  the  date  notice  is  given  or  received.  The  addresses  and
requirements for copies are as follows:

                  If to Debtor:

                           Avitar, Inc.
                           65 Dan Road
                           Canton, MA  01021
                           Telecopier No.
                           Confirmation No.
                           Attention:  Peter P. Phildius

                  If to Secured Party:

                           Global Capital Funding Group, L.P.
                           106 Colony Park Drive
                           Suite 900
                           Cumming, GA  30040
                           Attn: Lewis N. Lester
                           Telecopier No.678-947-6499
                           Confirmation No.678-947-0028

                           with a copy to:

                           Global Capital Advisors, Ltd.
                           106 Colony Park Drive, Suite 900
                           Cumming, GA 30040
                           Attention: Sharon Bauer Berman
                           Telecopier No.  678-947-6499

     16.  Waivers,  Non-Exclusive  Remedies,  Severability.  Except as otherwise
expressly set forth in any particular  provision of this Agreement,  any consent
or approval required or permitted by this Agreement to be given by Secured Party
may be given, and any term of this Agreement or of any other instrument  related
hereto or mentioned herein may be amended,  and the performance or observance by
Debtor of any term of this Agreement,  the Securities  Purchase Agreement or the
Note may be waived  (either  generally  or in a  particular  instance and either
retroactively  or  prospectively)  with,  but only with,  the  written  specific
consent of Secured Party. No waiver shall extend to or affect any obligation not
expressly waived or impair any right consequent thereon. No course of dealing or
delay or omission  on the part of Secured  Party in  exercising  any right shall
operate as a waiver thereof or otherwise be prejudicial thereto. No notice to or
demand upon Debtor shall entitle  Debtor to other or further notice or demand in
similar or other  circumstances.  The rights in this  Agreement,  the Securities
Purchase  Agreement  and the Note are  cumulative  and are not  exclusive of any
other remedies provided by law. The invalidity,  illegality or  unenforceability
of any  provision  in or  obligation  under this  Agreement  shall not affect or
impair the validity,  legality or enforceability of the remaining  provisions or
obligations under this Agreement.

     17.  Successors  and Assigns.  This Agreement is for the benefit of Secured
Party and its successors  and assigns,  and in the event of an assignment of all
or any  of  the  Secured  Obligations,  the  rights  hereunder,  to  the  extent
applicable to the Secured Obligations so assigned,  may be transferred with such
Secured  Obligations.  This  Agreement  shall  be  binding  on  Debtor  and  its
successors  and assigns,  provided  that Debtor shall not assign this  Agreement
without Secured Party's prior written consent.

     18. Changes in Writing. No amendment,  modification,  termination or waiver
of any  provision  of this  Agreement  or  consent  to any  departure  by Debtor
therefrom,  shall in any event be effective  without the written  concurrence of
Secured Party and Debtor.

     19.  Governing  Law. This  Agreement  shall be governed by and construed in
accordance with the laws of the State of Delaware,  without giving effect to the
conflicts of law principles thereof.

     20. Headings.  Cross reference pages and headings  contained herein are for
convenience of reference only, do not constitute a part of this  Agreement,  and
shall not be deemed to limit or affect any of the provisions hereof.

     21.  Counterparts.  This  Agreement  may be  executed  by each party upon a
separate copy, and in such case one  counterpart of this Agreement shall consist
of enough of such copies to reflect the  signatures of all of the parties.  This
Agreement may be executed in two or more counterparts, each of which shall be an
original,  and each of which shall  constitute one and the same  agreement.  Any
party may  deliver  an  executed  copy of this  Agreement  and of any  documents
contemplated hereby by facsimile transmission to another party and such delivery
shall have the same force and effect as any other delivery of a manually  signed
copy of this Agreement or of such other documents.





                             Signature Page Follows




     DULY EXECUTED and delivered by the parties on the date first written above.


                               AVITAR, INC.


                               By: /s/PETER P. PHILDIUS
                               Name: Peter P. Phildius
                               Title: CEO




                               GLOBAL CAPITAL FUNDING GROUP, L.P.
                               By its General Partner,  Global Capital
                                Management  Services, Inc.


                               By:
                               Name:  Lewis N. Lester
                               Title:  President