EPA Method 8240A Mix #2 Back Catalog number: 82492 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended SC-470863 Estradiol 17-Isovalerate, 25mg Price on request 3129.4-K-IO Tetranoic acid (Butyric), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 107-92-6 Price on request 10091.18-K-ME Estrone Price on request