EPA Method 8240A Calibration Check Compounds Back Catalog number: 82412 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54507 Bromide (Br-) Price on request 66101 2,2’,4,5,5’-Pentachlorobiphenyl (101) Price on request 676562 Isoxaflutole, 100mg Price on request