Document:

<PRE>
                                                                 Exhibit 10.22

                                                     July 15, 1998

Mr. Steven F. Ladin
2416 Kingman Drive
Wilmington, DE  19810-3552

Dear Steve:

         We are extremely pleased to offer you the position of Vice President
Finance - Chief Financial Officer with Sybron Chemicals Inc. at a base salary
of $175,000 per year.  You will be eligible for our Executive Bonus Program,
which carries a target of 26% of your annual salary, which will be prorated for
1998.  The actual award will depend on the financial performance of the Company.
The first 100% of your target amount will be paid in Company stock converted for
the years 1998, 1998 and  2000 at the price as of your starting date, and for
subsequent years at the price as of December 31 of the year three (3) years
prior to the bonus year.  Your employment will commence by August 1, 1998,
you will be reporting to me and work out of our Company headquarters.

         Steve, the following are the general conditions of your employment with
 our Company:

         1.       You will carry out the normal functions of a Chief Financial
                  Officer, including the following:

                  a.       Direct responsibility for the overall functioning of
                           the U.S. Accounting Department, including control,
                           costing and operational analysis.

                  b.       Functional responsibility for the overseas
                           controllers and accounting departments.

                  c.       Dealing with national and international banks and
                           investment banks, including maintaining compliance
                           with our loan documents and covenants.

                  d.       Worldwide treasury operations, including maintenance
                           of necessary cash flow to satisfy debt repayment
                           obligations and credit availability.

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S. Ladin
July 15, 1998

                  e.       Corporate secretarial functions to be carried out by
                           your group.

                  f.       Risk management.

                  g.       Investment of company benefit funds such as pension
                           and Savings & Thrift.

                  h.       Operational interaction with key management to
                           analyze and help determine actions relative to
                           company operations.

                  i.       Participate in company strategic planning, including
                           analysis and direct involvement in the implementation
                           of acquisitions, divestitures and other significant
                           profit or cash-generating opportunities.

                  j.       Shareholder and investor relations, including
                           interaction with investment research analysts and
                           institutional managers, preparation of appropriate
                           quarterly and annual reports, and presentations to
                           the investment community.

                  k.       Interaction with company lawyers and accountants to
                           maintain appropriate and necessary corporate legal
                           and administrative structures and activities, SEC
                           reporting requirements, etc.

         2.       On joining the Company, you will receive options for 25,000
                  shares of Company stock, according to our Stock Option Plan.

         3.       You will be a member of the Management Committee, comprised of
                  our senior management, including me.

         4.       You will be eligible to participate in our hospitalization,
                  dental, group insurance, Savings & Thrift, pension, and other
                  senior executive benefit plans in accordance with our current
                  company policy as it may change from time to time.

         5.       The Company will pay for your relocation to the Birmingham, NJ
                  area, as covered by the enclosed relocation policy.

         6.       You will have the use of a company car under the policy for an
                  executive of your grade, including gas, maintenance and
                  insurance at company expense.  The Company will also pay for
                  your reasonable travel and living expenses

Page Three
S. Ladin
July 15, 1998

                  while you are on company business, according to our policy.

         7.       Our standard company policies will prevail with respect to
                  termination of employment, except that, unless you are
                  terminated for Cause (as hereinafter defined), your minimum
                  termination payment will be six months salary.  "Cause" shall
                  mean any significant incidence of the following:  (a) an act
                  of dishonesty by you constituting a felony or other crime
                  involving moral turpitude or resulting or intended to result
                  directly or indirectly in your personal enrichment at the
                  Company's expense, (b) the willful engaging by you in
                  misconduct which is injurious to the Company, (c) habitual
                  drunkenness or drug addiction, (d) the refusal by you
                  substantially to perform your duties, (e) the violation by you
                  of any express direction or reasonable rule or regulation
                  established by the Company from time to time regarding the
                  conduct of its business, and (f) any violation by you of the
                  terms and conditions of this or any other agreement between
                  you and the Company.

         8.       In your executive grade, you are not subject to a stipulated
                  vacation entitlement or to reporting use of your time.
                  Rather, you may take whatever amount of vacation you deem
                  necessary and appropriate consistent with fulfilling your
                  professional responsibilities.

         9.       We require that you undergo a post offer physical examination
                  and obtain a "fit for duty" letter.  The physical may be
                  arranged through our Company physician, or through a physician
                  of your choice, at Sybron Chemicals Inc.'s expense.  Attached
                  is a list of our requirements, if you choose to go to your own
                  physician.

                  We also require you to pass a urine drug screen.  If you use
                  our Company physician for your physical exam, the urine drug
                  test can be taken at that time.  Please contact Susan
                  Jarnagin, Compensation and Benefits Manager, in our Human
                  Resources Department at (609) 893-1100, extension 293 to make
                  the necessary arrangements.

                  Our offer of employment is contingent on the satisfactory
                  results of both the physical and the drug test.

         10.      The Immigration Law requires us to request that you provide us
                  with proof of your U.S. citizenship or your legal status as an
                  alien before you begin employment with us.  Please refer to
                  the attached letter and Form I-9 in order that you can bring
                  the appropriate papers with you on your starting date.  We
                  will make the copies of your papers at that time.
Page Four
S. Ladin
July 15, 1998

         11.      Advise us in writing, please, if you have any agreements with
                  your present employer which might affect your employment by or
                  at Sybron Chemicals Inc.  You also agree not to reveal any
                  information which is proprietary to your present employer.

         12.      Please sign the attached Trade Secret, Restrictive Covenant
                  and Patent Agreement in accordance with company policy.

         13.      Enclosed is an application form for you to complete and return
                  with your acceptance of this offer.

         We are enclosing a signed duplicate of this letter and if the terms of
our employment offer are satisfactory, please sign and return the duplicate to
us by July 23, 1998 in the enclosed pre-addressed FedEx envelope.  Its receipt
by Sybron Chemicals Inc. will constitute an agreement between us and will be
binding upon and inure to the benefit of you, this Company, and any company
succeeding to the general business and properties of this Company by merger,
purchase or otherwise.

         If you have any questions, please feel free to contact me at once.

         We look forward to your joining us.

                                           Sincerely,

                                           Richard M. Klein
                                           President and Chief Executive Officer

RMK/me
Enclosures

AGREED TO:

By:

Date:

                                                     July 15, 1998

Mr. Steven F. Ladin
2416 Kingman Drive
Wilmington, DE  19810-3552

Dear Steve:

         Supplementing the terms of your Employment Agreement with Sybron
Chemicals Inc. (the "Company"), this will confirm that, in the event there shall
be a Change in Control (as hereinafter defined) and thereafter your employment
with the Company terminates at any time prior to December 31, 2000 Without Cause
(as hereinafter defined), you shall be entitled to a lump sum payment equal to
twice your annual base salary then in effect, payable no later than 30 days
after your employment with the Company so terminates.

         Termination of your employment with the Company Without Cause shall
mean (a) termination by the Company without Cause (as defined in your Employment
Agreement with the Company), or (b) termination by you by reason of (i) the
Company's failure to make any of the payments, or provide any of the material
benefits (or their equivalent), under the terms of your Employment Agreement
with the Company, or (ii) a material adverse change in your position or in the
scope of your duties and responsibilities.

         A "Change of Control" shall be deemed to have occurred upon the
earliest to occur of the following events:  (i) sale or disposal of
substantially all of the assets of the Company, or (ii) the date any entity,
person or group, within the meaning the Section 13(d)(3) or Section 14(d)(2) of
the Securities Exchange Act of 1934, as amended, other than the Company or
Citicorp, or any of their subsidiaries, or any employee benefit plan (or related
trust) sponsored or maintained by the Company or any of its subsidiaries, shall
have become the beneficial owner of, or shall have obtained voting control over,
more than fifty percent (50%) of the outstanding shares of (a) the Company's
Common Stock, or (b) the Common Stock of the Company resulting from the merger
or consolidation of the Company with or into any other entity.

Page Two
S. Ladin/Employment Agreement Supplement
July 15, 1998

         If the above correctly reflects our understanding, please so indicate
by signing in the space provided below for such purpose.

                                           Sincerely,

                                           Richard M. Klein
                                           President and Chief Executive Officer
                                           Sybron Chemicals Inc.

RMK/me

AGREED:

_______________________________
Steven F. Ladin

Date:___________________________

              TRADE SECRET, RESTRICTIVE COVENANT AND PATENT AGREEMENT

         AGREEMENT made this ___ day of July, 1998, between Sybron Chemicals
Inc., (hereinafter Company), and Steven F. Ladin (hereinafter Employee).

                                 WITNESSETH:

         WHEREAS, the Employee is or is about to be employed by the Company as
Vice President Finance - Chief Financial Officer;

         NOW THEREFORE, in consideration of such employment and continued
employment by the Company and remuneration to be paid by the Company to the
Employee, the parties agree as follows:

         1.       ACKNOWLEDGEMENTS

                  Employee acknowledges that:

                  A.       The Company possesses confidential information and
                           trade secrets relating but not limited to production
                           procedures and processes, product formulas,
                           machinery, designs, plans, identity of the Company's
                           suppliers, identity of the Company's customers,
                           special applications and uses of products, technology
                           and/or services by the Company's customers, special
                           relationships developed by the Company with its
                           customers and suppliers, customer proposals and the
                           Company's pricing and other practices.

                  B.       As Vice President Finance - Chief Financial Officer,
                           Employee will have access to such confidential
                           information and trade secrets of the Company.

                  C.       The Company has taken reasonable and necessary
                           precautions to preserve the secrecy and
                           confidentiality of its trade secrets and confidential
                           information.

                  D.       The Company has a legitimate and real interest in
                           protecting against the disclosure to or use by other
                           persons of such trade secrets and confidential
                           information by reasonably restricting the Employee's
                           activities upon the termination of his employment
                           with the Company.

                                                        -2-

         2.       NON-DISCLOSURE.  During the term of the Employee's employment
with the company and at any time after the termination of his employment with
the Company, regardless of the time, manner, or cause of such termination, the
Employee shall not, except in the regular course of the Company's business,
divulge, furnish or make accessible, or use for his own benefit, any
confidential information or trade secrets of the Company.

         3.       RESTRICTIVE COVENANT.  During the term of the Employee's
employment with the Company and for a period of eighteen (18) months after the
termination of his employment with the Company, regardless of the time, manner,
or cause of such termination, the Employee shall not directly or indirectly,
individually or as an employee, agent, or representative of any other person,
corporation, partnership, firm or entity (a) employ, hire or contract the
services of any other person in the employ of the Company, or (b) influence or
alter, or attempt to influence or alter, any aspect of the relationship between
the Company and its customers or the Company and its suppliers.  Should a
violation of any of these restrictive covenants occur, the period during which
such violation occurs and remains unmitigated will not be counted as elapsed
time following termination of employment as construed in the application of
this paragraph.

         4.       RETURN OF PROPERTY.  Upon the termination of his employment,
the Employee shall return to the Company all records, memoranda, notes, papers,
correspondence, reports, books, computer software, and all other data and
information and all copies or abstracts thereof that he has concerning the
business of the Company.

         5.       INVENTIONS.  The Employee shall promptly disclose and assign
and does hereby assign to the Company, or its designee, without further
remuneration, all inventions, discoveries, computer software, and improvements
conceived or made by him, solely or jointly with others, during his employment
with the Company or within one (1) year thereafter, and relating to or capable
of use in connection with the Company's business, regardless of whether or not
made during usual business hours and with the use of the Company's material and
equipment.  The Employee shall cooperate with and assist the Company, at the
Company's expense, to obtain patents on any such inventions, discoveries,
computer software or improvements, shall execute all necessary documents in
conjunction therewith and shall take all necessary steps to enable the Company
to secure and enforce such patent protection during his employment with the
Company and at any time thereafter.  The Employee shall not disclose to anyone
at any time any information concerning such invention, discovery or improvement
without the written consent of the Company.

                                                        -3-

         6.       ENFORCEMENT.  The Employee further acknowledges that any loss
to the Company by reason of his breach of any of his obligations hereunder
cannot be reasonably or adequately compensated in damages in an action at law.
The Company shall therefore be entitled to injunctive or other equitable relief
against the Employee to prevent him from failing to perform his obligations
hereunder.  Resort by the Company to such injunction or other equitable relief
shall not be construed as waiver of any rights the Company may have for damages
or otherwise.  In the event that the Company shall enforce any of the terms of
this agreement by legal action, the Employee shall pay to the Company all costs
of such action, including legal fees.

         7.       PRIOR OBLIGATIONS.  Employee represents that he is not under
any obligation, contractual or otherwise, to any former employer, or any other
party, that would prevent his acceptance of employment with the Company or limit
his ability to comply with the provisions of this Agreement.

         8.       GOVERNING LAW, JURISDICTION.  This Agreement shall be governed
by the laws of the State of New Jersey.  The parties acknowledge that Courts of
the State of New Jersey constitute the proper jurisdiction to resolve any
disputes arising out of or relating to this Agreement, and accordingly consent
to the jurisdiction of the Courts of the State of New Jersey to resolve any such
disputes.

         IN WITNESS WHEREOF, the parties have executed this Agreement the day
and year first written above.

                                      SYBRON CHEMICALS INC.

                                      By:_______________________________________
                                               Richard M. Klein

                                      __________________________________________
                                               Steven F. Ladin

RMK/me
</PRE><PRE>
                                                                 Exhibit 10.23

                                                     February 13, 1998

Mr. Stephen R. Adler
39 Broadacre Drive
Mt. Laurel, NJ  08054

Dear Steve,

         Supplementing the terms of your Employment Agreement with Sybron
Chemicals Inc. (the "Company"), this will confirm that, in the event there shall
be a Change in Control (as hereinafter defined) and thereafter your employment
with the Company terminates within 18 months Without Cause (as hereinafter
defined), you shall be entitled, in lieu of any other severance pay, to a lump
sum payment equal to your annual base salary then in effect plus your target
bonus, payable no later than 30 days after your employment with the Company so
terminates.

         Termination of your employment with the Company Without Cause shall
mean (a) termination by the Company without Cause (as defined in your Employment
Agreement with the Company), or (b) termination by you by reason of (i) the
Company's failure to make any of the payments, or provide any of the material
benefits (or their equivalent), under the terms of your Employment Agreement
with the Company, or (ii) a material adverse change in your position or in the
scope of your duties and responsibilities.

         A "Change of Control" shall be deemed to have occurred upon the
earliest to occur of the following events:  (i) sale or disposal of
substantially all of the assets of the Company, or (ii) the date any entity,
person or group, within the meaning the Section 13(d)(3) or Section 14(d)(2) of
the Securities Exchange Act of 1934, as amended, other than the Company or
Citicorp, or any of their subsidiaries, or any employee benefit plan (or related
trust) sponsored or maintained by the Company or any of its subsidiaries, shall
have become the beneficial owner of, or shall have obtained voting control over,
more than fifty percent (50%) of the outstanding shares of (a) the Company's
Common Stock, or (b) the Common Stock of the Company resulting from the merger
or consolidation of the Company with or into any other entity.

Page Two
S. R. Adler
February 13, 1998

         If the above correctly reflects our understanding, please so indicate
by signing in the space provided below for such purpose.

                                         Sincerely,

                                         Richard M. Klein
                                         President and Chief Executive Officer
                                         Sybron Chemicals Inc.

RMK/me

AGREED:

_______________________________
Stephen R. Adler

Date:___________________________

</PRE>

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