DOW 624 Volatile Internal/Surrogate Standard Back Catalog number: 94200 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79022 Heptachlor, 1000µg/ml in Hexane, 1ml Price on request DF-12346789-S Octachlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 50288 STD - CRQL Price on request