EPA Method 500 Series Internal Standard Back Catalog number: 31004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9313.12-100-IO 2,3,3'-Trichlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 38444-84-7 Price on request 70209 Methyl tert-butyl ether Price on request 678422 alpha-HCH, 100 µg/ml, Acetonitrile, 5ml Price on request