Benzidine Back Catalog number: 70027 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53315 GFAA Initial Calibration Verification Price on request 680919 Estriol, 10 µg/ml, Acetonitrile, 10ml Price on request 92652 Aroclors 1242 & 1260 Price on request