EPA Method 524.2 - Revision 4.0 Back Catalog number: 33001 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 92746 Oxygenates Price on request 2255.31-50-IO 17 alpha(H),21ß(H)-(22RS)-Homohopane, 50µg/mL in Isooctane, 1ml Price on request 0977.27-10-IO d2 C27 alpha alpha alpha (20R)-Cholestane, 10µg/mL in Isooctane, 1ml Price on request