Benzidine, 100mg Back Catalog number: 676771 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 93937 Volatile Standard Price on request 96885 EPA Method 539Mix #2 Price on request PN-40S 1,2,6,8-Tetrachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request