Arsenic (As) Back Catalog number: 57033 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0239.20-K-T Benzo[a]pyrene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 50-32-8 Price on request X9112 Heptachlor epoxide Price on request 70158 4,6-Dinitro-2-methylphenol Price on request