EPA Method 634 Analytes Back Catalog number: 40050 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0976.29-10-IO d2 C29 alpha alpha alpha (20R)-Ethylcholestane, 10µg/mL in Osooctane, 1ml Price on request 674465 Benthiavalicarb-isopropyl, 10.0 µg/ml, Cyclohexan Price on request 0021.16-10MG 1-Hydroxypyrene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 5315-79-7 Price on request