EPA Method 548 Calibration Solution Back Catalog number: 30050 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66049 2,2',4,5'-Tetrachlorobiphenyl (49) Price on request 9431.21-100-AN cis-Permethrin Price on request 679095 Ioxynil, 100mg Price on request