<PAGE>

                                                                      Exhibit 10
 

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

                    SEILER POLLUTION CONTROL SYSTEMS, INC.

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

THE SECURITIES OFFERED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS AND ARE BEING OFFERED AND
SOLD IN RELIANCE ON EXEMPTIONS FROM THE REGISTRATION REQUIREMENTS OF SUCH LAWS.
THE SECURITIES ARE SUBJECT TO RESTRICTIONS OF TRANSFERABILITY AND RESALE AND
MAY NOT BE TRANSFERRED OR RESOLD EXCEPT AS PERMITTED UNDER SUCH LAWS PURSUANT
TO REGISTRATION OR AN EXEMPTION THEREFROM. THE SECURITIES HAVE NOT BEEN
APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE COMMISSION OR ANY OTHER
REGULATORY AUTHORITY, NOR HAVE ANY OF THE FOREGOING AUTHORITIES PASSED UPON OR
ENDORSED THE MERITS OF THIS OFFERING OR THE ACCURACY OR ADEQUACY OF THE
OFFERING MATERIALS. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.
 

                         Maximum Offering: $1,500,000
 

 
      This offering consists of $1,500,000 of Convertible Debentures of
                    Seiler Pollution Control Systems, Inc.

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

                            SUBSCRIPTION AGREEMENT

                               ----------------
 
 
 
 
 
 
                                       1
<PAGE>
 
                           SUBSCRIPTION PROCEDURES

 Convertible Debentures of Seiler Pollution Control Systems, Inc. (the
"Company") are being offered in an aggregate amount not to exceed $1,500,000.
The Debentures will be transferable to the extent that any such transfer is
permitted by law. This offering is being made in accordance with the exemption
from registration under Section 4(2) of the Securities Act of 1933, as amended
(the "Act") and Rule 506 of Regulation D promulgated under the Act (the
"Regulation D Offering").

     The Investor Questionnaire is designed to enable the Investor to
    demonstrate the minimum legal requirements under federal and state
    securities laws to purchase the Debentures. The Signature Page for the
    Investor Questionnaire and the Subscription Agreement contain
    representations relating to the subscription.

        Also included is an Internal Revenue Service Form W-9: "Request for
        Taxpayer Identification Number and Certification" for U.S. citizens or
        residents of the U.S. for U.S. federal income tax purposes only.
        (Foreign investors should consult their tax advisors regarding the need
        to complete Internal Revenue Service Form W-9 and any other forms that
        may be required).

 If you are a foreign person or foreign entity, you may be subject to a
withholding tax equal to 30% of any dividends paid by the Company. In order to
eliminate or reduce such withholding tax you may submit a properly executed
I.R.S. Form 4224 (Exemption from Withholding of Tax on Income Effectively
Connected with the Conduct of a Trade or Business in the United States) or
I.R.S. Form 1001 (Ownership Exemption or Reduced Trade Certificate), claiming
exemption from withholding or eligibility for treaty benefits in the form of a
lower rate of withholding tax on interest or dividends.

 Payment must be made by wire transfer as provided below:

Immediately available funds should be sent via wire transfer to the escrow
account stated below and the completed subscription documents should be
forwarded to the Escrow Agent. Your subscription funds will be deposited into a
non-interest bearing escrow account of Joseph B. LaRocco, Esq., Escrow Agent,
at First Union Bank of Connecticut, Stamford, Connecticut. In the event of a
termination of the Regulation D Offering or the rejection of this subscription,
all subscription funds will be returned without interest. The wire instructions
are as follows:
 
 
 
                                       2
<PAGE>
 
First Union Bank of Connecticut
Executive Office
300 Main Street, P. O. Box 700
Stamford, CT 06904-0700

ABA #:     021101108
Swift #:   FUNBUS33
Account #: 20000-2072298-4
Acct. Name: Joseph B. LaRocco, Esq. Trustee Account
 
 
 
 
 
                                       3
<PAGE>
 
                            SUBSCRIPTION AGREEMENT
                            ----------------------
 
THE SECURITIES OFFERED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT
OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS AND ARE BEING OFFERED AND
SOLD IN RELIANCE ON EXEMPTIONS FROM THE REGISTRATION REQUIREMENTS OF SUCH LAWS.
THE SECURITIES ARE SUBJECT TO RESTRICTIONS OF TRANSFERABILITY AND RESALE AND
MAY NOT BE TRANSFERRED OR RESOLD EXCEPT AS PERMITTED UNDER SUCH LAWS PURSUANT
TO REGISTRATION OR AN EXEMPTION THEREFROM. THE SECURITIES HAVE NOT BEEN
APPROVED OR DISAPPROVED BY THE SECURITIES AND EXCHANGE COMMISSION OR ANY OTHER
REGULATORY AUTHORITY, NOR HAVE ANY OF THE FOREGOING AUTHORITIES PASSED UPON OR
ENDORSED THE MERITS OF THIS OFFERING OR THE ACCURACY OR ADEQUACY OF THE
OFFERING MATERIALS. ANY REPRESENTATION TO THE CONTRARY IS UNLAWFUL.

To:     Seiler Pollution Control Systems, Inc.
        --------------------------------------

        This Subscription Agreement is made between Seiler Pollution Control
Systems, Inc., ("Company" or "Seller") a Delaware corporation, and the
undersigned prospective purchaser ("Purchaser") who is subscribing hereby for
the Company's Convertible Debentures (the "Debentures"). The Debentures being
offered will be separately transferable, to the extent that any such transfer
is permitted by law. The conversion terms of the Debentures are set forth in
Section 4. This subscription is submitted to you in accordance with and subject
to the terms and conditions described in this Subscription Agreement dated
November __, 1997, together with any Exhibits thereto, relating to an offering
(the "Offering") of up to $1,500,000 of Debentures. This Offering is comprised
of an offering of the Debentures to accredited investors (the "Regulation D
Offering") in accordance with the exemption from registration under Section
4(2) of the Securities Act of 1933, as amended (the "Act"), and Rule 506 of
Regulation D promulgated under the Act ("Regulation D").

1.      SUBSCRIPTION.
        ------------

        (a) The undersigned hereby irrevocably subscribes for and agrees to
purchase $500,000 of the Company's Debentures. The Debentures shall pay a 7%
cumulative interest payable annually, in cash or in freely trading Common Stock
of the Company, at the Company's option, at the time of each conversion. If paid
in Common Stock, the number of shares of the Company's Common Stock to be
received shall be determined by dividing the dollar amount of the dividend by
the then applicable Market Price, as of the interest payment date. "Market
Price" shall mean 75% of the average of the 5 day closing bid prices, as
 
 
                                      4
<PAGE>
 
reported by Bloomberg, LP for the five trading days immediately preceding the
date of conversion, for any conversion notices received prior to 120 calendar
days following the "Closing Date" as defined below, and 65% of the average of
the 5 day closing bid prices, as reported by Bloomberg, LP for the five trading
days immediately preceding the date of conversion, for any conversion notices
received after 120 calendar days following the "Closing Date" as defined below.
If the interest is to be paid in cash, the Company shall make such payment
within 5 business days of the date of each "Conversion Date" as that term is
defined in Section 4(b). If the interest is to be paid in Common Stock, said
Common Stock shall be delivered to the Purchaser, or per Purchaser's
Instructions, within 5 business days of the Conversion Date. The Debentures are
subject to automatic conversion at the end of three years from the date of
issuance at which time all Debentures outstanding will be automatically
converted based upon the formula set forth in Section 4(c). The closing shall
be deemed to have occurred on the date the funds are received by the Company
(the "Closing Date").

        (b) Upon receipt by the Company of the requisite payment for the
Debentures being purchased the Debentures so purchased will be forwarded by the
Escrow Agent, Joseph B. LaRocco, to the Purchaser and the name of such
Purchaser will be registered on the Debenture transfer books of the Company as
the record owner of such Debentures. The Escrow Agent shall not be liable for
any action taken or omitted by him in good faith and in no event shall the
Escrow Agent be liable or responsible except for the Escrow Agent's own gross
negligence or willful misconduct. The Escrow Agent has made no representations
or warranties in connection with this transaction and has not been involved in
the negotiation of the terms of this Agreement or any matters relative thereto.
Seller and Purchaser each agree to indemnify and hold harmless the Escrow Agent
from and with respect to any suits, claims, actions or liabilities arising in
any way out of this transaction including the obligation to defend any legal
action brought which In any way arises out of or is related to the acts of the
Escrow Agent under this Agreement. The Escrow Agent makes no representation as
to the validity, value, genuineness or the collectability of any security or
other documents or instruments held by or delivered to the Escrow Agent. The
Escrow Agent is not rendering securities advice to anyone with respect to this
proposed transaction; nor is the Escrow Agent opining on the compliance of the
proposed transaction under applicable securities law.

2.      REPRESENTATIONS AND WARRANTIES.
        ------------------------------

        The undersigned hereby represents and warrants to, and agrees with, the
Company as follows:

                (a) The undersigned has been furnished with, and has carefully
        read the applicable form of Debenture included herein as Exhibit A and
        the form of Registration Rights Agreement annexed hereto as Exhibit B

                                       5
<PAGE>
 
        (the "Registration Rights Agreement"), and is familiar with and
        understands the terms of the Offering. With respect to tax and other
        economic considerations involved in his investment, the undersigned is
        not relying on the Company. The undersigned has carefully considered
        and has, to the extent the undersigned believes such discussion
        necessary, discussed with the undersigned's professional legal, tax,
        accounting and financial advisors the suitability of an investment in
        the Company, by purchasing the Debentures, for the undersigned's
        particular tax and financial situation and has determined that the
        investment being made by the undersigned is a suitable investment for
        the undersigned.

                (b) The undersigned acknowledges that all documents, records,
        and books pertaining to this investment which the undersigned has
        requested including Form 10-K for the fiscal year ended December 31,
        1996 and Form 10-Q for the quarter March 31, 1997 and June 30, 1997
        (the "Disclosure Documents") have been made available for inspection by
        the undersigned, or the undersigned has had access thereto.

                (c) The undersigned has had a reasonable opportunity to ask
        questions of and receive answers from a person or persons acting on
        behalf of the Company concerning the Offering and all such questions
        have been answered to the full satisfaction of the undersigned.

                (d) The undersigned will not sell or otherwise transfer the
        Debentures without registration under the Act or applicable state
        securities laws or an exemption therefrom. The Debentures have not been
        registered under the Act or under the securities laws of any states.
        The Common Stock underlying the Debentures is to be registered by the
        Company pursuant to the terms of the Registration Rights Agreement
        attached hereto as Exhibit B and incorporated herein and made a part
        hereof. Without limiting the right to convert the Debentures and sell
        the Common Stock pursuant to the Registration Rights Agreement, the
        undersigned represents that the undersigned is purchasing the
        Debentures for the undersigned's own account, for investment and not
        with a view to resale or distribution except in compliance with the
        Act. The undersigned has not offered or sold any portion of the
        Debentures being acquired nor does the undersigned have any present
        intention of dividing the Debentures with others or of selling,
        distributing or otherwise disposing of any portion of the Debentures
        either currently or after the passage of a fixed or determinable period
        of time or upon the occurrence or non-occurrence of any predetermined
        event or circumstance in violation of the Act. Except as provided in
        the Registration Rights Agreement, the Company has no obligation to
        register the Common Stock Issuable upon conversion of the Debentures.

                                       6
<PAGE>
 
                (e) The undersigned recognizes that an investment in the
        Debentures involves substantial risks, including loss of the entire
        amount of such investment. Further, the undersigned has carefully read
        and considered the schedule entitled Pending Litigation matters
        attached hereto as Exhibit C.

                (f) Legends (i) The undersigned acknowledges that each
        certificate representing the Debentures unless registered pursuant to
        the Registration Rights Agreement, shall be stamped or otherwise
        imprinted with a legend substantially in the following form:

                THE SECURITIES EVIDENCED BY THIS CERTIFICATE MAY NOT BE OFFERED
                OR SOLD, TRANSFERRED, PLEDGED, HYPOTHECATED OR OTHERWISE
                DISPOSED OF EXCEPT (i) PURSUANT TO AN EFFECTIVE REGISTRATION
                STATEMENT UNDER THE SECURITIES ACT OF 1933, AS AMENDED, (ii) TO
                THE EXTENT APPLICABLE, RULE 144 UNDER THE ACT (OR ANY SIMILAR
                RULE UNDER SUCH ACT RELATING TO THE DISPOSITION OF SECURITIES),
                OR (iii) IF AN EXEMPTION FROM REGISTRATION UNDER SUCH ACT IS
                AVAILABLE.

                NOTWITHSTANDING THE FOREGOING, THE COMMON STOCK INTO WHICH THE
                SECURITIES EVIDENCED BY THIS CERTIFICATE ARE CONVERTIBLE ARE
                ALSO SUBJECT TO THE REGISTRATION RIGHTS SET FORTH IN EACH OF
                THAT CERTAIN SUBSCRIPTION AGREEMENT AND REGISTRATION RIGHTS
                AGREEMENT BY AND BETWEEN THE HOLDER HEREOF AND THE COMPANY, A
                COPY OF EACH IS ON FILE AT THE COMPANY'S PRINCIPAL EXECUTIVE
                OFFICE.

                (ii) The Common Stock issued upon conversion shall contain the
        following legend:

                THE SECURITIES REPRESENTED HEREBY HAVE BEEN INCLUDED IN THE
                COMPANY'S REGISTRATION STATEMENT INITIALLY FILED WITH THE
                SECURITIES AND EXCHANGE COMMISSION ON __________, 1997, AND MAY
                BE SOLD IN ACCORDANCE WITH THE COMPANY'S PROSPECTUS DATED
                __________, 1997, WHICH FORMS A PART OF SUCH REGISTRATION
                STATEMENT, OR AN OPINION OF COUNSEL OR OTHER

                                       7
<PAGE>
 
                EVIDENCE ACCEPTABLE TO THE CORPORATION THAT SUCH REGISTRATION
                IS NOT REQUIRED.

                (g) If this Subscription Agreement is executed and delivered on
        behalf of a corporation, (i) such corporation has the full legal right
        and power and all authority and approval required (a) to execute and
        deliver, or authorize execution and delivery of, this Subscription
        Agreement and all other instruments (including, without limitation, the
        Registration Rights Agreement) executed and delivered by or on behalf
        of such corporation in connection with the purchase of the Debentures
        and (b) to purchase and hold the Debentures: (ii) the signature of the
        party signing on behalf of such corporation is binding upon such
        corporation; and (iii) such corporation has not been formed for the
        specific purpose of acquiring the Debentures, unless each beneficial
        owner of such entity is qualified as an accredited investor within the
        meaning of Rule 501 (a) of Regulation D and has submitted information
        substantiating such individual qualification.

                (h) The undersigned shall indemnify and hold harmless the
        Company and each stockholder, executive, employee, representative,
        affiliate, officer, director, agent (including Counsel) or control
        person of the Company, who is or may be a party or is or may be
        threatened to be made a party to any threatened, pending or
        contemplated action, suit or proceeding, whether civil, criminal,
        administrative or investigative, by reason of or arising from any
        actual or alleged misrepresentation or misstatement of facts or
        omission to represent or state facts made or alleged to have been made
        by the undersigned to the Company or omitted or alleged to have been
        omitted by the undersigned, concerning the undersigned or the
        undersigned's subscription for and purchase of the Debentures or the
        undersigned's authority to invest or financial position in connection
        with the Offering, including, without limitation, any such
        misrepresentation, misstatement or omission contained in this
        Subscription Agreement, the Questionnaire or any other document
        submitted by the undersigned, against losses, liabilities and expenses
        for which the Company, or any stockholder, executive, employee,
        representative, affiliate, officer, director, agent (including Counsel)
        or control person of the Company has not otherwise been reimbursed
        (including attorneys' fees and disbursements, judgments, fines and
        amounts paid in settlement) actually and reasonably incurred by the
        Company, or such officer, director, stockholder, executive, employee,
        agent (including Counsel), representative, affiliate or control person
        in connection with such action, suit or proceeding.

                (i) The undersigned is not subscribing for the Debentures as a
        result of, or pursuant to, any advertisement, article, notice or other
        communication published in any newspaper, magazine or similar media or
        broadcast over television or radio or presented at any seminar or
        meeting.

                                       8
<PAGE>
                (j) The undersigned or the undersigned's representatives, as
        the case may be, has such knowledge and experience in financial, tax
        and business matters so as to enable the undersigned to utilize the
        information made available to the undersigned in connection with the
        Offering to evaluate the merits and risks of an investment in the
        Debentures and to make an informed investment decision with respect
        thereto.

                (k) The Purchaser is purchasing the Debentures for its own
        account for investment, and not with a view toward the resale or
        distribution thereof. Purchaser is neither an underwriter of, nor a
        dealer in, the Debentures or the Common Stock issuable upon conversion
        thereof and is not participating in the distribution or resale of the
        Debentures or the Common Stock issuable upon conversion thereof.
 
        3.      SELLER REPRESENTATIONS.
                ----------------------

                (a) Concerning the Securities. The issuance, sale and delivery
of the Debentures have been duly authorized by all required corporate action on
the part of Seller, and when issued, sold and delivered in accordance with the
terms hereof and thereof for the consideration expressed herein and therein,
will be duly and validly issued and enforceable in accordance with their terms,
subject to the laws of bankruptcy and creditors' rights generally. __________
shares of Common Stock issuable upon conversion of all the Debentures issued
pursuant to this offering have been duly and validly reserved for issuance and,
upon issuance shall be duly and validly issued, fully paid, and non-assessable
(the "Reserved Shares"). From time to time, the Company shall keep such
additional shares of Common Stock reserved so as to allow for the conversion of
all the Debentures issued pursuant to this offering.

        Prior to conversion of all the Debentures, if at anytime the conversion
of all the Debentures outstanding would result in an insufficient number of
authorized shares of Common Stock being available to cover all the conversions,
then in such event, the Company will move to call and hold a shareholder's
meeting within 60 days of such event for the sole purpose of authorizing
additional shares of Common Stock to facilitate the conversions. In such an
event the Company shall recommend to all shareholders to vote their shares in
favor of increasing the authorized number of shares of Common Stock. Seller
represents and warrants that under no circumstances will it deny or prevent
Purchaser's right to convert the Debentures as permitted under the terms of this
Subscription Agreement or the Registration Rights Agreement. Nothing in this
Section shall limit the obligation of the Company to make the payments set
forth in Section 4(h).
 
                                      9
<PAGE>
 
        (b) Authority to Enter Agreement. This Agreement has been duly
authorized, validly executed and delivered on behalf of Seller and is a valid
and binding agreement in accordance with its terms, subject to general
principals of equity and to bankruptcy or other laws affecting the enforcement
of creditors' rights generally.

        (c) Non-contravention. The execution and delivery of this Agreement and
the consummation of the issuance of the Debentures, and the transactions
contemplated by this Agreement do not and will not conflict with or result in a
breach by Seller of any of the terms or provisions of, or constitute a default
under, the articles of incorporation or by-laws of Seller, or any indenture,
mortgage, deed of trust, or other material agreement or instrument to which
Seller is a party or by which it or any of its properties or assets are bound,
or any existing applicable law, rule, or regulation of the United States or any
State thereof or any applicable decree, judgment, or order of any Federal or
State court. Federal or State regulatory body, administrative agency or other
United States governmental body having jurisdiction over Seller or any of its
properties or assets.

        (d) Company Compliance. The Company represents and warrants that the
Company and its subsidiaries are: (i) In full compliance, to the extent
applicable, with all reporting obligations under either Section 13(a) or 15(d)
of the Securities Exchange Act of 1934; (ii) not in violation of any term or
provision of its Certificate of Incorporation or by-laws: (iii) not in default
in the performance or observance of any obligation, agreement or condition
contained in any bond, debenture, note or any other evidence of indebtedness or
in any mortgage, deed of trust, indenture or other instrument or agreement to
which they are a party, either singly or jointly, by which it or any of its
property is bound or subject except at set forth in Exhibit C. Furthermore, the
Company is not aware of any other facts, which it has not disclosed which could
have a material adverse effect on the business, condition, (financial or
otherwise), operations, earnings, performance, properties or prospects of the
Company and its subsidiaries taken as a whole.

        (e) Pending Litigation. Except as otherwise disclosed in Exhibit C,
there is (i) no action, suit or proceeding before or by any court, arbitrator
or governmental body now pending or, to the knowledge of the Company,
threatened or contemplated to which the Company or any of its subsidiaries is
or may be a party or to which the business or property of the Company or any of
its subsidiaries is or may be bound or subject, (ii) no law, statute, rule,
regulation, order or ordinance that has been enacted, adopted or issued by any
Governmental Body or that, to the knowledge of the Company, has been proposed
by any Governmental Body adversely affecting the Company or any of its
subsidiaries, (iii) no injunction, restraining order or order of any nature by
a federal, state or foreign court or Governmental Body of competent
jurisdiction to which the Company or any of its subsidiaries is subject issued
that, in the case of clauses (i), (ii) and (iii) above, (x) is reasonably
likely, singly or in the aggregate,
 
 
                                      10
<PAGE>
 
to result in a material adverse effect on the business, condition, (financial
or otherwise), operations, earnings, performance, properties or prospects of
the Company, and its subsidiaries taken as a whole or (y) would interfere with
or adversely affect the issuance of the Debentures or would be reasonably
likely to render this Subscription Agreement or the Debentures, or any portion
thereof, invalid or unenforceable.

        (f) Issuance of the Debentures. No action has been taken and no law,
statute, rule, regulation, order or ordinance has been enacted, adopted or
issued by any Governmental Body that prevents the issuance of the Debentures or
the Common Stock issuable upon conversion or exercise thereof, no injunction,
restraining order or order of any nature by a federal or state court of
competent jurisdiction has been issued that prevents the issuance of the
Debentures or the Common Stock issuable upon conversion or exercise thereof or
suspends the sale of the Debentures or the Common Stock issuable upon
conversion thereof in any jurisdiction; and no action, suit or proceeding is
pending against or, to the best knowledge of the Company, threatened against or
affecting, the Company, any of its subsidiaries or, to the best knowledge of
the Company, before any court or arbitrator or any Governmental Body that, if
adversely determined, would prohibit, materially interfere with or adversely
affect the issuance or marketability of the Debentures or the Common Stock
issuable upon conversion or exercise thereof or render the Subscription
Agreement or the Debentures, or any Portion thereof, invalid or unenforceable.

        (g) The Company shall indemnify and hold harmless the Purchaser and each
stockholder, executive, employee, representative, affiliate, officer, director
or control person of the Purchaser, who is or may be a party or is or may be
threatened to be made a party to any threatened, pending or contemplated
action, suit or proceeding, whether civil, criminal, administrative or
investigative, by reason of or arising from any actual or alleged
misrepresentation or misstatement of facts or omission to represent or state
facts made or alleged to have been made by the Company to the Purchaser or
omitted or alleged to have been omitted by the Company, concerning the
Purchaser or the Purchaser's subscription for and purchase of the Debentures or
the Purchaser's authority to invest or financial position in connection with
the Offering, including, without limitation, any such misrepresentation,
misstatement or omission contained in this Subscription Agreement, the
Questionnaire or any other document submitted by the Company, against losses,
liabilities and expenses for which the Purchaser, or any stockholder,
executive, employee, representative, affiliate, officer, director or control
person of the Purchaser has not otherwise been reimbursed (including attorneys'
fees and disbursements, judgments, fines and amounts paid in settlement)
actually and reasonably incurred by the Purchaser, or such officer, director,
stockholder, executive, employee, representative, affiliate or control person
in connection with such action, suit or proceeding.
 
 
                                      11
<PAGE>
 
        (h) No Change. Other than filings required by the Blue Sky or federal
securities law, no consent, approval or authorization of or designation,
declaration or filing with any governmental or other regulatory authority on
the part of the Company is required in connection with the valid execution,
delivery and performance of this Agreement. Any required qualification or
notification under applicable federal securities laws and state Blue Sky laws
of the offer, sale and issuance of the Debentures, has been obtained on or
before the date hereof or will have been obtained within the allowable period
thereafter, and a copy thereof will be forwarded to Counsel for the Purchaser.

        (i) The Statements. Neither this Agreement nor any of the "Disclosure
Documents", as hereinafter defined, contains any untrue statement of a
material fact or omits to state any material fact necessary in order to make
the statements contained herein or therein not misleading in the light of the
circumstances under which such statements are made. There exists no fact or
circumstances which, to the knowledge of the Company, materially and adversely
affects the business, properties or assets, or conditions, financial or
otherwise, of the Company, which has not been set forth in this Subscription
Agreement or disclosed in such documents.

        (j) The Purchaser has been advised that the Company has not retained any
independent professionals to review or comment on this Offering or otherwise
protect the interests of the Purchaser. Although the Company has retained its
own counsel, neither such counsel nor any other firm, including Joseph B.
LaRocco, Esq., has acted on behalf of the Purchaser, and the Purchaser should
not rely on the Company's legal counsel or Joseph B. LaRocco, Esq. with respect
to any matters herein described.

        (k) There has never been represented, guaranteed, or warranted to the
undersigned by any broker, the Company, its officers, directors or agents, or
employees or any other person, expressly or by implication (i) the percentage
of profits and/or amount of or type of consideration, profit or loss to be
realized, if any, as a result of the Company's operations; and (ii) that the
past performance or experience on the part of the management of the Company, or
of any other person, will in any way result in the overall profitable
operations of the Company.

        (l) Prior Shares Issued Under Regulation S or Regulation D. In the past
            ------------------------------------------------------
twelve months the Company raised gross proceeds of $ -0- in Regulation S
offerings for which it issued no shares of its Common Stock. The Company has
raised gross proceeds of $ -0- in Regulation D offerings in the past twelve
months.

        (m) Current Authorized Shares. As of November 13, 1997, there were
            -------------------------
25,000,000 authorized shares of Common Stock of which approximately 21,000,000
shares of Common Stock were issued and outstanding.
 
 
                                      12
<PAGE>
 
        (n) Disclosure Documents. The Disclosure Documents are all the
            --------------------
documents (other than preliminary materials) that the Company has been required
to file with the SEC from December 31, 1996, to the date hereof. As of their
respective dates, none of the Disclosure Documents contained any untrue
statement of a material fact or omitted to state a material fact required to be
stated therein or necessary in order to make the statements therein, in light
of the circumstances under which they were made, not misleading, and no
material event has occurred since the Company's filing on Form 10-K for the
year ended December 31, 1996, which could make any of the disclosures combined
therein misleading. The financial statements of the Company included in the
Disclosure Documents have been prepared in accordance with generally accepted
accounting principles applied on a consistent basis during the periods involved
(except as may be indicated in the notes thereto or, in the case of unaudited
financial statements, only to normal recurring year-end audit adjustments) the
consolidated financial position of the Company and its consolidated
subsidiaries as at the dates thereof and the consolidated results of their
operations and changes in financial position for the periods then ended.

        (o) Information Supplied. The information supplied by the Company to
            --------------------
Purchaser in connection with the offering of the Debentures does not contain
any untrue statement of a material fact or omit to state a material fact
necessary to make the statements, in the light of the circumstances in which
they were made, not misleading. There exists no fact or circumstances which, to
the knowledge of the Company, materially and adversely affects the business,
properties, assets, or conditions, financial or otherwise, of the Company,
which has not been set forth in this Agreement or disclosed in such documents.

        (p) Delivery Instructions. On the Closing Date the Debentures being
            ---------------------
purchased hereunder shall be delivered to Joseph B. LaRocco, Esq. as Escrow
Attorney, who will simultaneously wire to the Company the funds being held in
escrow, less placement fees, at which time the Escrow Attorney shall then have
the Debentures delivered to the Purchaser, per the Purchaser's instructions.

        (q) Non-contravention. The execution and delivery of this Agreement by
            -----------------
the Company, the issuance of the Debentures, and the consummation by the
Company of the other transactions contemplated by this Agreement, and the
Debentures do not and will not conflict with or result in a breach by the
Company of any of the terms or provisions of, or constitute a default under,
the (i) certificate of incorporation or by-laws of the Company, (ii) any
indenture, mortgage, deed of trust, or other material agreement or instrument
to which the Company is a party or by which it or any of its properties or
assets are bound, (iii) any material existing applicable law, rule, or
regulation or any applicable decree, judgment, or (iv) order of any court,
United States federal or state regulatory body, administrative agency, or other
governmental body having jurisdiction over the Company or any of its properties
or assets, except such
 
 
                                      13
<PAGE>
 
conflict, breach or default which would not have a material adverse effect on
the transactions contemplated herein.

        (r) No Default. Except as set forth in the Company's report on form
            ----------
10-K for the year ending December 31, 1996, the Company is not in default in
the performance or observance of any material obligation, agreement, covenant
or condition contained in any indenture, mortgage, deed of trust or other
material instrument or agreement to which it is a party or by which it or its
property is bound, and neither the execution of, nor the delivery by the
Company of, nor the performance by the Company of its obligations under, this
Agreement or the Debentures, other than the conversion provision thereof, will
conflict with or result in the breach or violation of any of the terms or
provisions of, or constitute a default or result in the creation or imposition
of any lien or charge on any assets or properties of the Company under, (i) any
material indenture, mortgage, deed of trust or other material agreement
applicable to the Company or instrument to which the Company is a party or by
which it is bound, (ii) any statute applicable to the Company or its property,
(iii) the Certificate of Incorporation or By-Laws of the Company, (iv) any
decree, judgment, order, rule or regulation of any court or governmental agency
or body having jurisdiction over the Company regulation of any court or
governmental agency or body having jurisdiction over the Company or its
properties, or (v) the Company's listing agreement for its Common Stock.

        (s) Use of Proceeds. The Company represents that the net proceeds of
this offering will be used for project engineering work in the United States
and Europe.

    4.  TERMS OF CONVERSION AND REDEMPTION.
        ----------------------------------

        (a) Debentures. Upon the Company's or its designated attorney's receipt
of a facsimile or original of Purchaser's signed Notice of Conversion and the
original Debenture to be converted in whole or in part, the Company shall
instruct its transfer agent to issue one or more Certificates representing that
number of shares of Common Stock into which the Debenture is convertible in
accordance with the provisions regarding conversion set forth in Exhibit D
hereto. The Seller's transfer agent or attorney shall act as Registrar and
shall maintain an appropriate ledger containing the necessary information with
respect to each Debenture.

        (b) Conversion Procedures. The face amount of the Debentures, plus
accrued interest, may be converted anytime after the earlier of the effective
date of the Registration Statement or 120 days after the Closing Date. The date
on which the Notice of Conversion is effective ("Conversion Date") shall be
deemed to be the date on which the Purchaser has delivered to the Company or
its designated attorney a facsimile or original of the signed Notice of
Conversion, as long as the original Debentures to be converted are received by
the Company or its designated attorney within 5 business days thereafter.
 
 
                                      14
<PAGE>
 
        (c) Issuance of Common Stock. Upon the conversion of any Debentures and
upon receipt by the Company or its attorney of a facsimile or original of
Purchaser's signed Notice of Conversion (see Exhibit D) Seller shall instruct
Seller's transfer agent to issue Stock Certificates with restrictive legends as
set forth in this Agreement in the name of Purchaser (or its nominee) and in
such denominations to be specified at conversion representing the number of
shares of Common Stock issuable upon such conversion, as applicable. Seller
warrants that no instructions, other than these instructions, have been given or
will be given to the transfer agent and that the Common Stock shall otherwise be
freely transferable on the books and records of Seller.

        (d) (i) Conversion Rate. Purchaser is entitled to convert up to 50% of
the face amount of the Debentures, plus accrued interest and any liquidated
damages, at anytime after the earlier of the effective date of the Registration
Statement or 120 days following the Closing Date, at the lesser of (a) 120% of
the 5 day average closing bid price, as reported by Bloomberg, LP for the 5
trading days immediately preceding the Closing Date or (b) 75% of the 5 day
average closing bid price, as reported by Bloomberg, LP for the 5 trading days
immediately preceding the applicable Conversion Date for any Conversion Dates
that are on or before the 120/th/ day following the Closing Date and at the
lesser of (x) 120% of the 5 day average closing bid price, as reported by
Bloomberg, LP for the 5 trading days immediately preceding the Closing Date or
(y) 65% of the 5 day average closing bid price, as reported by Bloomberg, LP for
the 5 trading days immediately preceding the applicable Conversion Date for any
Conversion Dates that are after the 120/th/ day following the Closing Date.
Purchaser is entitled to convert the remaining 50% of the face amount of the
Debentures, plus accrued interest and any liquidated damages, at anytime after
the earlier of the effective date of the Registration Statement or 120 days
following the Closing Date, at 75% of the 5 day average closing bid price, as
reported by Bloomberg, LP for the 5 trading days immediately preceding the
applicable Conversion Date for any Conversion Dates that are on or before the
120/th/ day following the Closing Date and at 65% of the 5 day average closing
bid price, as reported by Bloomberg, LP for the 5 trading days immediately
preceding the applicable Conversion Date for any Conversion Dates that are after
the 120/th/ day following the Closing Date. No fractional shares or scrip
representing fractions of shares will be issued on conversion, but the number of
shares issuable shall be rounded up or down, as the case may be, to the nearest
whole share.

        (ii) Redemption Terms. The Company reserves the right, at its sole
option, to call a mandatory redemption of any percentage of the balance on the
Debentures during the one hundred twenty (120) day period following the Closing
Date. In the event the Company exercises such right of redemption up to and
including the one hundred twentieth (120/th/) day following the Closing Date it
shall pay the Purchaser, in U.S. currency One Hundred Twenty-five Percent (125%)
of the face amount of the Debentures redeemed. Mandatory redemption by the
Company shall be effected by the Company notifying the Purchaser by facsimile at



                                      15
<PAGE>
 
the number listed in this Agreement of the Company's intention to exercise its
right of mandatory redemption. The Company shall state in such notice the dollar
amount of the Debentures it intends to redeem, the amount that it will pay to
effectuate such redemption and the date by which the Purchaser must deliver the
Debentures to Joseph B. LaRocco, Escrow Agent (including the Escrow Agent's
address) unless the Company is already in receipt of those Debentures to be
redeemed. The date by which the Debentures must be delivered to the Escrow Agent
shall not be later than 10 business days following the date the Company notifies
the Purchaser by facsimile of the redemption. The Company shall give the
Purchaser at least 2 business day's notice of the above information. On or
before the date by which the Purchaser is to deliver the original Debentures to
the Escrow Agent, the Company shall wire to the Escrow Agent that amount
necessary to pay the Purchaser to effectuate the mandatory redemption. Once the
Escrow Agent is in receipt of the original Debentures and those funds necessary
to effectuate the mandatory conversion he shall wire those funds to the
Purchaser and deliver to the Company the original Debentures via overnight
courier. The Purchaser shall not be entitled to send a Conversion Notice to the
Company with respect to the Debentures being redeemed during such period.

        (iii) Mandatory Conversion. The Debentures are subject to a mandatory,
36 month conversion feature at the end of which all Debentures outstanding will
be automatically converted, upon the terms set forth in this section ("Mandatory
Conversion Date").

        (e) Nothing contained in this Subscription Agreement shall be deemed to
establish or require the payment of interest to the purchaser at a rate in
excess of the maximum rate permitted by governing law. In the event that the
rate of interest required to be paid exceeds the maximum rate permitted by
governing law, the rate of interest required to be paid thereunder shall be
automatically reduced to the maximum rate permitted under the governing law and
such excess shall be returned with reasonable promptness by the Purchaser to the
Company.

        (f) It shall be the Company's responsibility to take all necessary
actions and to bear all such costs to issue the Certificate of Common Stock as
provided herein, including the responsibility and cost for delivery of an
opinion letter to the transfer agent, if so required. The person in whose name
the certificate of Common Stock is to be registered shall be treated as a
shareholder of record on and after the conversion date. Upon surrender of any
Debentures that are to be converted in part, the Company shall issue to the
Purchaser a new Debenture equal to the unconverted amount, if so requested in
writing by Purchaser.

        (g) Within five (5) business days after receipt of the documentation
referred to above in Section 4(b), the Company shall deliver a certificate,
without stop transfer instructions, for the number of shares of Common Stock
issuable upon the conversion. It shall be the Company's responsibility to take
all



                                      16

<PAGE>
 
necessary actions and to bear all such costs to issue the Common Stock as
provided herein, including the cost for delivery of an opinion letter to the
transfer agent, if so required. The person in whose name the certificate of
Common Stock is to be registered shall be treated as a shareholder of record on
and after the conversion date. Upon surrender of any Debentures that are to be
converted in part, the Company shall issue to the Purchaser a new Debenture
equal to the unconverted amount, if so requested in writing by Purchaser.

        In the event the Company does not make delivery of the Common Stock, as
instructed by Purchaser, within 5 business days after delivery of the original
Debenture, then in such event the Company shall pay to Purchaser an amount, in
cash in accordance with the following schedule, wherein "No. Business Days Late"
is defined as the number of business days beyond the 5 business days delivery
period.

<TABLE> 
<CAPTION> 
                                              Late Payment for Each  
                                               $10,000 of Debenture    
No. Business Days Late                        Amount Being Converted
----------------------                        ----------------------
<S>                                           <C> 
          1                                       $100                  
          2                                       $200                  
          3                                       $300                  
          4                                       $400                  
          5                                       $500                  
          6                                       $600                  
          7                                       $700                  
          8                                       $800                  
          9                                       $900                  
         10                                       $1,000               
         >10                                      $1,000 + $200 for each  
                                                  Business Day Beyond 10 
</TABLE> 

        The Company acknowledges that its failure to deliver the Common Stock
within 5 business days after the Conversion Date will cause the Purchaser to
suffer damages in an amount that will be difficult to ascertain. Accordingly,
the parties agree that it is appropriate to include in this Agreement a
provision for liquidated damages. The parties acknowledge and agree that the
liquidated damages provision set forth in this section represents the parties'
good faith effort to qualify such damages and, as such, agree that the form and
amount of such liquidated damages are reasonable and will not constitute a
penalty. The payment of liquidated damages shall not relieve the Company from
its obligations to deliver the Common Stock pursuant to the terms of this
Agreement.

        To the extent that the failure of the Company to issue the Common Stock
pursuant to this Section 4(g) is due to the unavailability of authorized but
unissued shares of Common Stock, the provisions of this Section 4(g) shall not
apply but instead the provisions of Section 4(h) shall apply.

        The Company shall make any payments incurred under this Section 4(g) in
immediately available funds within five (5) business days from the Conversion
Date if late. Nothing herein shall limit a Purchaser's right to pursue actual



                                      17

<PAGE>
 
damages or cancel the conversion for the Company's failure to issue and deliver
Common Stock to the Holder within 10 business days after the Conversion Date.

        (h) The Company shall at all times reserve and have available all Common
Stock necessary to meet conversion of the Debentures by all Purchasers of the
entire amount of Debentures then outstanding. If, at any time Purchaser submits
a Notice of Conversion and the Company does not have sufficient authorized but
unissued shares of Common Stock available to effect, in full, a conversion of
the Debentures (a "Conversion Default", the date of such default being referred
to herein as the "Conversion Default Date"), the Company shall issue to the
Purchaser all of the shares of Common Stock which are available, and the Notice
of Conversion as to any Debentures requested to be converted but not converted
(the "Unconverted Debentures"), upon Purchaser's sole option, may be deemed null
and void. The Company shall provide notice of such Conversion Default ("Notice
of Conversion Default") to all existing Purchasers of outstanding Debentures, by
facsimile, wlthin three (3) business days of such default (with the original
delivered by overnight or two day courier), and the Purchaser shall give notice
to the Company by facsimile within five business days of receipt of the original
Notice of Conversion Default (with the original delivered by overnight or two
day courier) of its election to either nullify or confirm the Notice of
Conversion.

        The Company agrees to pay to all Purchasers of outstanding Debentures
payments for a Conversion Default ("Conversion Default Payments") in the amount
of (N/365) x (.24) x the initial issuance price of the outstanding and/or
tendered but not converted Debentures held by each Purchaser where N = the
number of days from the Conversion Default Date to the date (the "Authorization
Date") that the Company authorizes a sufficient number of shares of Common Stock
to effect conversion of all remaining Debentures. The Company shall send notice
("Authorization Notice") to each Purchaser of outstanding Debentures that
additional shares of Common Stock have been authorized, the Authorization Date
and the amount of Purchaser's accrued Conversion Default Payments. The accrued
Conversion Default shall be paid in cash or shall be convertible into Common
Stock at the Conversion Rate, at the Purchaser's option, payable as follows: (i)
in the event Purchaser elects to take such payment in cash, cash payments shall
be made to such Purchaser of outstanding Debentures by the fifth day of the
following calendar month, or (ii) in the event Purchaser elects to take such
payment in stock, the Purchaser may convert such payment amount into Common
Stock at the conversion rate set forth in section 4(d) at anytime after the 5th
day of the calendar month following the month in which the Authorization Notice
was received, until the expiration of the mandatory 36 month conversion period.

        The company acknowledges that its failure to maintain a sufficient
number of authorized but unissued shares of Common Stock to effect in full a
conversion of the Debentures will cause the Purchaser to suffer damages in an
amount that will be difficult to ascertain. Accordingly, the parties agree that
it is appropriate to include in this Agreement a provision for liquidated
damages. The parties


                                      18

<PAGE>
 
acknowledge and agree that the liquidated damages provision set forth in this
section represents the parties' good faith effort to quantify such damages and,
as such, agree that the form and amount of such liquidated damages are
reasonable and will not constitute a penalty. The payment of liquidated damages
shall not relieve the Company from its obligations to deliver the Common Stock
pursuant to the terms of this Agreement.

        Nothing herein shall limit the Purchaser's right to pursue actual
damages or cancel the conversion for the Company's failure to maintain a
sufficient number of authorized shares of Common Stock.

        (i) The Company shall furnish to Purchaser such number of prospectuses
and other documents incidental to the registration of the shares of Common Stock
underlying the Debentures, including any amendment of or supplements thereto.

5.      LIMITS ON AMOUNT OF CONVERSION AND OWNERSHIP.
        ---------------------------------------------

        Other than the Mandatory Conversion provisions contained in this
Agreement which are not limited by the following, in no other event shall the
Purchaser be entitled to convert that amount of Debentures in excess of that
amount upon conversion of which the sum of (1) the number of shares of Common
Stock beneficially owned by the Purchaser and its affiliates (other than shares
of Common Stock which may be deemed beneficially owned through the ownership of
the unconverted portion of the Debentures), and (2) the number of shares of
Common Stock issuable upon the conversion of the Debentures with respect to
which the determination of this proviso is being made, would result in
beneficial ownership by the Purchaser and its affiliates of more than 4.9% of
the outstanding shares of Common Stock of the Company. For purposes of this
provision to the immediately preceding sentence, beneficial ownership shall be
determined in accordance with Section 13 (d) of the Securities Exchange Act of
1934, as amended, and Regulation 13 D-G thereunder, except as otherwise provided
in clause (1) of such provision.

6.      DELIVERY INSTRUCTIONS.
        ----------------------

        Prior to or on the Closing Date the Company shall deliver to the Escrow
Agent an opinion letter signed by counsel for the Company in the form attached
hereto as Exhibit E. Also, prior to or on the Closing Date the Company shall
deliver to the Escrow Agent a signed Registration Rights Agreement in the form
attached hereto as Exhibit B. The Debentures being purchased hereunder shall be
delivered to Joseph B. LaRocco, Esq. as Escrow Agent, who will hold them in
escrow until funds have been wired to the Company or its Counsel at which time
the Escrow Agent shall then have the Debentures delivered to the Purchaser, per
the Purchaser's instructions.



                                      19

<PAGE>
 
7.      UNDERSTANDINGS.
        --------------
 
        The undersigned understands, acknowledges and agreess with the
Company as follows:

FOR ALL SUBSCRIBERS:

        (a) This Subscription may be rejected, in whole or in part, by the
Company in its sole and absolute discretion at any time before the date set for
closing unless the Company has given notice of acceptance of the undersigned's
subscription by signing this Subscription Agreement.

        (b) No U.S. federal or state agency or any agency of any other
jurisdiction has made any finding or determination as to the fairness of the
terms of the Offering for investment nor any recommendation or endorsement of
the Debentures.

        (c) The representations, warranties and agreements of the undersigned
and the Company contained herein and in any other writing delivered in
connection with the transactions contemplated hereby shall be true and correct
in all material respects on and as of the date of the sale of the Debentures,
and as of the date of the conversion and exercise thereof, as if made on and as
of such date and shall survive the execution and delivery of this Subscription
Agreement and the purchase of the Debentures.

        (d) IN MAKING AN INVESTMENT DECISION, PURCHASERS MUST RELY ON THEIR
OWN EXAMINATION OF THE COMPANY AND THE TERMS OF THE OFFERING, INCLUDING THE
MERITS AND RISKS INVOLVED. THE DEBENTURES HAVE NOT BEEN RECOMMENDED BY ANY
FEDERAL OR STATE SECURITIES COMMISSION OR REGULATORY AUTHORITY. FURTHERMORE,
THE FOREGOING AUTHORITIES HAVE NOT CONFIRMED THE ACCURACY OR DETERMINED THE
ADEQUACY OF ANY MEMORANDUM OR THIS DOCUMENT. ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.

        (e) The Regulation D Offering is intended to be exempt from registration
under the Securities Act by virtue of Section 4(2) of the Securities Act and
the provisions of Regulation D thereunder, which is in part dependent upon the
truth, completeness and accuracy of the statements made by the undersigned
herein and in the Questionnaire.

        (f) It is understood that in order not to jeopardize the Offering's
exempt status under Section 4(2) of the Securities Act and Regulation D, any
transferee may, at a minimum, be required to fulfill the investor suitability
requirements thereunder.

                                       20
<PAGE>
 
        (g) THE DEBENTURES MAY NOT BE TRANSFERRED, RESOLD OR OTHERWISE DISPOSED
OF EXCEPT AS PERMITTED UNDER THE SECURITIES ACT AND APPLICABLE STATE SECURITIES
LAWS, PURSUANT TO REGISTRATION OR EXEMPTION THEREFROM. PURCHASERS SHOULD BE
AWARE THAT THEY WILL BE REQUIRED TO BEAR THE FINANCIAL RISKS OF THIS INVESTMENT
FOR AN INDEFINITE PERIOD OF TIME.

        (h) NASAA UNIFORM LEGEND

        IN MAKING AN INVESTMENT DECISION INVESTORS MUST RELY ON THEIR OWN
EXAMINATION OF THE PERSON OR ENTITY CREATING THE SECURITIES AND THE TERMS OF
THE OFFERING, INCLUDING THE MERITS AND RISKS INVOLVED. THESE SECURITIES HAVE
NOT BEEN RECOMMENDED BY ANY FEDERAL OR STATE SECURITIES COMMISSION OR
REGULATORY AUTHORITY. FURTHERMORE, THE FOREGOING AUTHORITIES HAVE NOT CONFIRMED
THE ACCURACY OR DETERMINED THE ADEQUACY OF THIS DOCUMENT. ANY REPRESENTATION TO
THE CONTRARY IS A CRIMINAL OFFENSE. THESE SECURITIES ARE SUBJECT TO
RESTRICTIONS ON TRANSFERABILITY AND RESALE AND MAY NOT BE TRANSFERRED OR RESOLD
EXCEPT AS PERMITTED UNDER THE SECURITIES ACT OF 1933 AND THE APPLICABLE STATE
SECURITIES LAWS, PURSUANT TO REGISTRATION OR EXEMPTION THEREFROM. INVESTORS
SHOULD BE AWARE THAT THEY WILL BE REQUIRED TO BEAR THE FINANCIAL RISKS OF THIS
INVESTMENT FOR AN INDEFINITE PERIOD OF TIME.

9.      Litigation.
        ----------

        (a) Forum Selection and Consent to Jurisdiction. Any litigation based
thereon, or arising out of, under, or in connection with, this agreement or any
course of conduct, course of dealing, statements (whether oral or written) or
actions of the Company or Holder shall be brought and maintained exclusively in
the courts of the state of Delaware. The Company hereby expressly and
irrevocably submits to the jurisdiction of the state and federal Courts of the
state of Delaware for the purpose of any such litigation as set forth above and
irrevocably agrees to be bound by any final judgment rendered thereby in
connection with such litigation. The Company further irrevocably consents to
the service of process by registered mail, postage prepaid, or by personal
service within or without the State of Delaware. The Company hereby expressly
and irrevocably waives, to the fullest extent permitted by law, any objection
which it may have or hereafter may have to the laying of venue of any such
litigation brought in any such court referred to above and any claim that any
such litigation has been brought in any inconvenient forum. To the extent
that the Company has or hereafter may acquire any immunity from jurisdiction of
any court or from any legal process (whether through service or notice,
attachment prior to

                                       21
<PAGE>
 
judgment, attachment in aid of execution or otherwise) with respect to itself
or its property. The Company hereby irrevocably waives such immunity in respect
of its obligations under this agreement and the other loan documents.

        (b) Waiver of Jury Trial. The Holder and the Company hereby knowingly,
voluntarily and intentionally waive any rights they may have to a trial by jury
in respect of any litigation based hereon, or arising out of, under, or in
connection with, this agreement, or any course of conduct, course of dealing,
statements (whether oral or written) or actions of the Holder or the Company.
The Company acknowledges and agrees that it has received full and sufficient
consideration for this provision and that this provision is a material
inducement for the Holder entering into this agreement.

        (c) Submission To Jurisdiction. Any legal action or proceeding in
connection with this Agreement or the performance hereof may be brought in the
state and federal courts located in Delaware, and the parties hereby
irrevocably submit to the non-exclusive jurisdiction of such courts for the
purpose of any such action or proceeding.

10.     MISCELLANEOUS.
        -------------

        (a) All pronouns and any variations thereof used herein shall be
deemed to refer to the masculine, feminine, impersonal, singular or plural, as
the identity of the Person or persons may require.

        (b) Neither this Subscription Agreement nor any provision hereof shall
be waived, modified, changed, discharged, terminated, revoked or canceled,
except by an instrument in writing signed by the party effecting the same
against whom any change, discharge or termination is sought.

        (c) Notices required or permitted to be given hereunder shall be in
writing and shall be deemed to be sufficiently given when personally delivered
or sent by registered mail, return receipt requested, addressed: (i) if to the
Company, at 555 Metro Place North, Suite 100, 4th Floor, Dublin, OH 43017
(ii) if to the undersigned, at the address for correspondence set forth in the
Questionnaire, or at such other address as may have been specified by written
notice given in accordance with this paragraph 10(c).

        (d) This Subscription Agreement shall be enforced, governed and
construed in all respects in accordance with the laws of the State of Delaware,
as such laws are applied by New York courts to agreements entered into, and
to be performed in, Delaware by and between residents of Delaware, and shall be
binding upon the undersigned, the undersigned's heirs, estate, legal
representatives, successors and assigns and shall inure to the benefit of the
Company, its successors and assigns. If any provision of this Subscription
Agreement is invalid or unenforceable under any applicable statue or rule of
law,

                                       22
<PAGE>
 
then such provisions shall be deemed inoperative to the extent that it may
conflict therewith and shall be deemed modified to conform with such statute or
rule of law. Any provision hereof that may prove invalid or unenforceable under
any law shall not affect the validity or enforceability of any other provision
hereof.

        (e) This Subscription Agreement, together with Exhibits A, B, C, D and
E attached hereto and made a part hereof, constitute the entire agreement
between the parties hereto with respect to the subject matter hereof and may be
amended only by a writing executed by both parties hereto. An executed
facsimile copy of the Subscription Agreement shall be effective as an original.

11.     NOTICE.
        ------

        All notices or other communications required or permitted hereunder
shall be in writing and shall be deemed given, delivered and received (a) when
delivered, if delivered personally, (b) four days after mailing, when sent by
registered or certified mail, return receipt requested and postage prepaid,
(c) the next business day after delivery to a private courier service, and
(d) on the date of delivery by telecopy, receipt confirmed, provided that a
confirmation copy is sent on the next business day by registered or certified
mall, return receipt requested and postage prepaid, in each case addressed as
follows:

        If to Company, to:

                Seiler Pollution Control Systems, Inc.
                555 Metro Place North
                Suite 100, 4th Floor
                Dublin, OH 43017
                Attention:
                Phone: 614-791-3272
                FAX:

        If to Purchaser, to:

                ______________________________________

                ______________________________________

                ______________________________________
 

                Phone: _______________________________

                Fax:   _______________________________

                                       23
<PAGE>
 
or to such other address as the recipient party may indicate by a notice
delivered to the sending party (such change of address notice to be deemed
given, delivered and received only upon actual receipt thereof by the recipient
of such notice).

12.     SIGNATURE/FACSIMILE AS ORIGINAL/COUNTERPARTS

        The signature of this Subscription Agreement is contained as part of the
applicable Subscription Package, entitled "Signature Page." This Subscription
Agreement may be executed in counterparts and the facsimile transmission of an
executed counterpart to this Subscription Agreement shall be effective as an
original.

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                                      24