COD Calibration Standard Back Catalog number: 50434 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 40049 EPA Method 633.1 Analytes Price on request EPA-1668CVS EPA Method 1668 Calibration Kit, 5 ampoules, nonane Price on request 673735 Atrazine, 100 µg/ml, Ethyl acetate, 5ml Price on request