Benzidine, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 679880 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 92621 Volatile Standard Price on request 10256.14-1G Aspartame, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 22839-47-0 Price on request 50631 Ammonia as (NH4+) Price on request