Benzo(g,h,i)perylene, 1000µg/ml in MeChl, 1ml

High Boiling Sulfur in White Oil for Diesel Fuel Analysis 2 50 ppm S in sulfur-free White Oil (20 cst); units: 1x5mL vials Benzo[b]naphtho[2,1-d]thiophene (0485,16) + Benzo[b]naphtho[2,3-d]thiophene (0484,16) (1:1)

3-Ethylpentane

Heptachlor-exo-epoxide, 100 µg/ml, Acetonitrile,