EPA Method 500 Series Internal Standard Back Catalog number: 31004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678451 Pentachloroaniline, 100 µg/ml, Acetonitrile, 5ml Price on request MI508-100 Reagent kit for 100 tests (Iron) Contains: 2 x 20mL FE-O Price on request BPF 4,4'-Dihydroxydiphenylmethane, 1.2ml x 50ug/ml, methanol Price on request