4,4'-DDT (ring-13C12), 100ug/ml in n-Nonane, 1,2ml

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

4-Chloro-3-methylphenol, 100µg/ml in MeOH, 1ml

1-(4-Chlorophenyl)ethanol