EPA 1620 Standard 1 Back Catalog number: 53139 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673955 gamma-HCH, 100 µg/ml, Cyclohexane, 5ml Price on request 10052.23-50-AN JWH-073 COOH-d4, 50µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. Price on request 71615 n-Butyraldehyde Price on request