WS Benzo(a)pyrene - Cal Check Back Catalog number: 91833 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0917.14-500-IO 2,4-Dimethyldiphenylsulfide, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16704-47-5 Price on request 676964 Penthiopyrad, 25mg Price on request 8764.6-50-IO Bis(2,3-dibromopropyl)phosphate, tech., 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5412-25-9 Price on request