Aroclor 1221 Back Catalog number: 70016 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 685284 PAH-Mix 4 deuterated, 10µg/ml in Acetonitrile, 1ml Price on request 51182 Michigan GRO Standard Price on request 673751 Butafenacil, 100 µg/ml, Ethyl acetate, 5ml Price on request