EPA Method 525.2 Pesticide Level 4 Back Catalog number: 92843 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71984 bis(4-Chlorophenyl) methane Price on request C16179100 Phthalic acid, n-pentyl-isopentyl ester, certified, 0.1g Price on request 79379 Benzo(a)pyrene Price on request