EPA Method 1666Labeled Standard Back Catalog number: 82491 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C16171830 Phthalic acid, bis-C6-C8-branched alkyl esters C7-rich, 100mg Price on request 73327 Perfluoroheptanoic acid [PFHpA] Price on request 676950 Alachlor OA, 100 µg/ml, Acetonitrile, 1ml Price on request