Aroclor 1221 Back Catalog number: 90593 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54212 Ammonia as (NH4+) Price on request 678381 2,4'-DDT, 100 µg/ml, Acetonitrile, 5ml Price on request 50399 IC Anion Custom Mix - Parent Price on request