Wisconsin DNR GRO Standard Back Catalog number: 90379 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93994 Benzo(b)fluoranthene Price on request 9502.12-100-ME Sotalol HCl, 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 959-24-0 Price on request 2043.8-50-AN Perfluorooctane sulfonamide, 50ug/ml, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 754-91-6 Price on request