EPA Method 525Mix #3 Back Catalog number: 92691 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71971 bis(4-Chlorophenyl)acetic acid Price on request 54157 Magnesium (Mg) Price on request 673529 4,4'-DDD, 10.0 µg/ml, Ethyl acetate, 10ml Price on request