EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672918 Oxasulfuron, 100mg Price on request 8418.14-10G Perfluoroperhydrophenanthrene, , Solvent-, Unit 10g, # of units-, Cas.no. 306-91-2 Price on request 672894 Chlorbenside, 100mg Price on request