1,2-Bis(phenylthio)ethane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 622-20-8

2,4-Dibromodibenzofuran, 1.2ml x 50ug/ml, toluene

3,3'-Dimethylbenzidine, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 119-93-7

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