2,4-Dimethylphenol, 100 µg/ml, Acetonitrile, 1ml

1,2,3,4,6,9-Hexachloro[13C12]dibenzofuran, 1.2ml x 1ug/ml, nonane

High Boiling Sulfur in Toluene for Diesel Fuel Analysis 1 50 ppm S in sulphur-free Toluene; unit: 1x5mL vials Benzo[b]naphtho[2,1-d]thiophene (0485,16) + Benzo[b]naphtho[2,3-d]thiophene (0484,16) (1:1)

4,4'-DDT-13C12