Fenthion-oxon-sulfone, 100µg/ml in AL, 5ml

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

N-(4-chlorophenyl)-N'-(3,4-dichlorophenyl)urea , 1.2ml x 50ug/ml, methanol

2-Methyldiphenylmethane, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 713-36-0