EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59898 ICP Mix Price on request PN-42S 1,3,5,7-Tetrachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request C16179100 Phthalic acid, n-pentyl-isopentyl ester, certified, 0.1g Price on request