EPA Method 624Mix #1 - Purgeables Back Catalog number: 40021 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended PN-54S 1,2,3,6,7-Pentachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request 70593 Chlorpyrifos methyl Price on request MBP-202 2,2',3,3',5,5',6,6'-Octachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane Price on request