Calibration Verification Solution , 1ml, nonane Back Catalog number: EPA-1613CS3 Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 8685.12 Quinalphos, , Solvent-, Unit , # of units-, Cas.no. 88283-41-4 Price on request 3379.8-100 Dicrotophos, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 141-66-2 Price on request 2837.4-50-ME Perfluorobutyramide, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 662-50-0 Price on request