EPA Method 624 Internal / Surrogate Standard Back Catalog number: 92559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended CCZ-3 3-Chloro-9H-carbazole, 1.2ml x 50ug/ml, nonane Price on request 94980 PCB Congener Mix #2 Price on request C13245100 17a-Ethinylestradiol, certified, 0.25g Price on request