EPA Method 507 - Performance Check Solution Back Catalog number: 19030 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683837 Metalaxyl-M, 100 µg/ml, Acetonitrile, 1ml Price on request 50127 pH 12.0 Standard @ 25°C Price on request UFA-005S Methyl cis-9-octadecenoate, 10mg/ml in Heptane,1ml Price on request