EPA 1620 Standard 2 Back Catalog number: 53140 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16380400 Propachlor-oxalamic acid (OA), 10mg Price on request 93699 Haloacetic Acids Price on request 678311 Dichlofenthion, 10 µg/ml, Acetonitrile, 10ml Price on request