EPA Method 507 Analyte Mix #8 Back Catalog number: 94131 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3508.13-K-IO n-Heptylbenzene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1078-71-3 Price on request 11098.6-10MG 2,5-Dimethylpyrrole,neat,neat,10mg, Price on request MPN-72 1,2,4,5,7,8-Hexachloro(13C10)naphthalene, 1.2mL x 50ug/mL, nonane Price on request