EPA Method 515.1 Analytes - Underivatized Back Catalog number: 83596 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 99882 Fermentation Standard, in Water, 1ml Price on request 677926 Sulfotep, 100 µg/ml, Ethyl acetate, 1ml Price on request 14728.22-K-AN Δ9-THC Carboxylic Acid A, 1000µg/ml in Acetonitrile, 1ml Price on request