EPA Method 524.2 - Gases & Liquids Back Catalog number: 35011 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PN-68S 1,2,3,5,6,8-Hexachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request 54254 Silica (SiO2) Price on request 3967.19-K-IO Diphenyltolylphosphate, 1000µg/ml in IO, 1ml Price on request