Arsenic (As) Back Catalog number: 50439 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BDE-139 2,2',3,4,4',6-Hexabromodiphenyl ether, 1.2ml x 50ug/ml, nonane Price on request 678390 Dicofol, 100 µg/ml, Acetonitrile, 5ml Price on request X9037 Chlordane Price on request