EPA Method 507 - Performance Check Solution Back Catalog number: 19137 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675245 Picloram, 100 µg/ml, Acetonitrile, 5ml Price on request 0008.10-100-T 2-Nitronaphthalene, 100µg/ml in Toluene, 1ml Price on request D3-N-MEFOSAA N-methyl-d3-perfluoro-1-octanesulfonamidoacetic acid, 50µg/ml in MeOH, 1,2ml Price on request