EPA Method 525 - Perchlorinates Back Catalog number: 31029 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 34371 Hexachlorobutadiene, 2000µg/ml in MeOH, 1ml Price on request 31571 Dichlorodifluoromethane Price on request 79057 Acetophenone Price on request