Calibration Standard Kit Back Catalog number: 52089 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9499.10-100-AN Clofibric acid Price on request DF-1239-S 1,2,3,9-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 10133.25-1G 4-n-Nonylphenol pentaethoxylate Price on request