EPA Method 551.1 Performance Check Soln Back Catalog number: 30114 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PN-69S 1,2,3,5,7,8-Hexachloronaphthalene, 1.2ml x 50ug/ml, nonane Price on request 4PM159 2,3,3',4,5,5'-Hexachloro-4'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane Price on request 79608 1,6-Dimethylnaphthalene Price on request