EPA Method 8260B - Purgeable Internal Std Back Catalog number: 22013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79681 Mestranol Price on request 72742 17-alpha-Ethynylestradiol Price on request 0276.24-10MG Naphtho[1,2-b]fluoranthene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 111189-32-3 Price on request