EPA Method 645 Analytes Back Catalog number: 40059 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1339.31-50-IO 17 alpha(H),21ß(H)-(22R)-Homohopane, 50µg/mL in isooctane, 1ml Price on request 679247 2-Nitrophenol, 500mg Price on request 679343 2-Nitrophenol, 100 µg/ml, Methanol, 1ml Price on request