Atrazine, 100µg/mL in Acetonitrile, 1ml

2,4'-DDE, 100 µg/ml, Ethyl acetate, 5ml

Low level Nitrogen & Sulfur Calibration Set Units: 1x1mL ampoules or 10mL screwcapped bottle Nitrogen introduced using Aniline / Sulfur introduced using di-n-Butyl Sulfide Catalogue No. Concentration Matrix: Benzene mg/kg (ppm) S-4143-0

1,1,1,2-Tetrachloroethane, 100 µg/ml, Methanol,