1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin

Low level Nitrogen Calibration Units: 1x1mL ampoules or 10mL screwcapped bottle Nitrogen introduced using Aniline Catalogue No. Concentration Matrix: isooctane mg/kg (ppm) S-4142-0 Blank S-4142-05 0.5 S-4142-1

Dichloroacetic acid Surrogate Method 300.1

N-α-Methylhistamine Dihydrochloride, 5mg