EPA Method 531.1 - Analytes Back Catalog number: 30042R Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83609 Hexanaldehyde-DNPH, 100µg/ml in Acetonitrile, 1ml Price on request 679407 Dimethyldioctadecylammonium chloride, 100 µg/ml, Price on request BCR-311 6-Nitrobenzo[a]pyrene, 10mg Price on request