EPA Method 555 Herbicide Standard Back Catalog number: 83600 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0406.27-150-CY n-Heptacosane, ?13C: -25.48, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 593-49-7 Price on request CNCHLOR cis-Nonachlor, 1.2mL x 100ug/mL, nonane Price on request 8688.8 Vamidothion, , Solvent-, Unit , # of units-, Cas.no. 2275-23-2 Price on request