EPA Method 500 Internal Standard #6 Back Catalog number: 30169 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52303 LFS Solution 1 Price on request MDF-12346-1 1,2,3,4,6-Pentachloro[13C12]dibenzofuran, 1.2ml x 1ug/ml, nonane Price on request 31411 Tetrachloroethene, 2000µg/ml in MeOH, 1ml Price on request