EPA Method 507 - Performance Check Solution Back Catalog number: 19130 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1196.24-1G 5ß(H)-Cholanic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 546-18-9 Price on request 673299 Flufenoxuron, 100 µg/ml, Acetonitrile, 5ml Price on request 10554.14-1G Dibenzylsulfide Price on request