EPA Method 507 - Performance Check Solution Back Catalog number: 19137 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11251.6-100-AN Clothianidin-d3 (N-methyl-d3),100 µg/mL,acetonitrile,1mL, Price on request 93811 Decachlorobiphenyl Price on request MDD-12478 1,2,4,7,8-Pentachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene Price on request