EPA Method 8330 Analyte Back Catalog number: 79248 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0974.29-10-IO d4 C29 alpha alpha alpha (20R)-Ethylcholestane, 10µg/mL in Isooctane, 1ml Price on request 98353 Ethanol Price on request 1773.12-100-AN 4,4'-Diaminobiphenyl,100 µg/mL,acetonitrile,1mL, Price on request