EPA Method 507 - Performance Check Solution Back Catalog number: 19130 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95406 Aroclor 1254 & Tetrachloro-m-xylene Price on request MDF-1234678 1,2,3,4,6,7,8-Heptachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 0201.18-10MG Benz[a]anthracene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 56-55-3 Price on request