EPA Method 8021B Mix #3 Back Catalog number: 80210 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2619.32-50-IO 17 alpha(H),21ß(H)-(22RS)-Bishomohopane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 54352-50-0 Price on request C13245100 17a-Ethinylestradiol, certified, 0.25g Price on request M13-B-278-CDF 1,3-Dibromo-2,7,8-trichloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene Price on request