Deethylphosphamidon, 100 µg/ml, Ethyl acetate, 1

Nitrite (NO2-) as N

2,3',4,4',5-Pentachloro-3-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

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