EPA Method 531.1 - Analytes Back Catalog number: 30042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended K204980 all-trans 4-Keto Retinoic Acid, 5mg Price on request 2241.25-100-AN T-2 Toxin, 100 µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 21259-20-1 Price on request 98527 N,N-Dimethylformamide Price on request