EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 20005 CLP Semi-Volatile Acid Surrogate Standard, 2000µg/ml in MeOH, 1ml Price on request 79056 Fenvalerate Price on request 2935.4-100-IO Dichlorvos-d6 (dimethyl-d6), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 203645-53-8 Price on request