EPA Method 604.1 Analytes Back Catalog number: 40004 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9131.19-100-ME Androstenedione, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 63-05-8 Price on request DF-2378-S 2,3,7,8-Tetrachlorodibenzofuran , 1.2ml x 50ug/ml, nonane Price on request 59047 Stock Standard #4 Price on request