IC Cal Standard Low Back Catalog number: 59562 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83525 EPA Method 8330 - Calibration Mix #1 Price on request 90600 Diquat Price on request DF-1347-S 1,3,4,7-Tetrachlorodibenzofuran , 1.2ml x 50ug/ml, nonane Price on request