Arsenic (As) Back Catalog number: 57233 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90184 Toxaphene Price on request 673531 2,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml Price on request EN-1948ES Extraction Standard Solution, in nonane/3.2% toluene, 1,2ml Price on request