2,4'-DDD, 100 µg/ml, Acetonitrile, 5ml

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)

Echinocystic acid

1,2,3,5,6,8-Hexachloronaphthalene, 1.2mL x 50ug/mL, nonane