EPA Method 502/524 Surrogate Standard #2 Back Catalog number: 19267 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2268.12-5MG 2,2',3,3',4,4',5,5'-Octachlorobiphenyl, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 35694-08-7 Price on request 672990 Medroxyprogesterone 17-acetate, 250mg Price on request 94307 Hydrocarbon Mix #2 Price on request