EPA 8240B Calibration Mix 6 Back Catalog number: 82429 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79436 Biphenyl Price on request 8913.14-100-T 5-Methyl-2,3',4,4'-tetrachlorodipehnylmethane Price on request 9224.15-10MG Carbamazepine Price on request