ASTM D-4815 Calibration Mix #2A Back Catalog number: 51214 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71150 4-Chlorophenoxyacetic acid Price on request BDD-27/28 2,7/2,8-Dibromodibenzo-p-dioxin mix, 1.2ml x 50ug/ml, toluene Price on request DF-1349-S 1,3,4,9-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request