4,4’-DDE

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

n-Pentadecane-d32, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 36340-20-2

Dibenz[a,j]acridine, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 224-42-0