JOINT FILING AGREEMENT

                             JOINT FILING AGREEMENT




         The undersigned  agree, in accordance with Rule  13d-1(k)(1)  under the
Securities  and  Exchange  Act of 1934,  as  amended,  to jointly  file with the
Securities and Exchange  Commission,  on behalf of the  undersigned,  a Schedule
13D, and any subsequent amendments thereto,  relating to our ownership of Common
Stock of Rheometric Scientific, Inc.


Date:  March 16, 2000                       ANDLINGER CAPITAL XXVI LLC


                                            By: /s/ Xxxxxxx X. Xxxxxx
                                                -----------------------
                                            Name:  Xxxxxxx X. Xxxxxx
                                            Title: Manager


                                            XXXXXXX X. XXXXXXXXX


                                             /s/ Xxxxxxx X. Xxxxxxxxx
                                            ---------------------------


                                            XXXXXXX X. XXXXXX


                                             /s/ Xxxxxxx X. Xxxxxx
                                            ---------------------------


                                            XXXXXXX X. XXXXXXXXX


                                             /s/ Xxxxxxx X. Xxxxxxxxx
                                            ---------------------------


                                            XXXXXX X. XXXXXXXX


                                             /s/ Xxxxxx X. Xxxxxxxx
                                            ---------------------------


                                            XXXXXXX X. XXXXXXXXX


                                             /s/ Xxxxxxx X. Xxxxxxxxx
                                            ---------------------------