EPA Method 507 - Performance Check Solution Back Catalog number: 19030 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 684308 Mefenpyr, 10mg Price on request 2145.8-50-ME 1H,1H-Perfluorooctane-1-ol, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 307-30-2 Price on request 71785 N-Phenyl-N’-(1,3-dimethylbutyl)-p-phenylenediamine Price on request