A: CLINICAL CHEMISTRY SYSTEMS WITH SOFTWARE VERSIONS LESS THAN 7.0: (1) MODEL 3332 VITROS 250, (2) MODEL 3391 VITROS 250 AT; B: CLINICAL CHEMISTRY SYSTEMS WITH SOFTWARE VERSIONS LESS THAN 3.07: (3) MODEL 3360 VITROS 950, (4) MODEL 3361 VITROS 950 AT