3,4,4'-Trichloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

18ß(H)-Olean-12-en-3-one, neat, Solvent-neat, Unit 2mg, # of units-1, Cas.no. 638-97-1

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

2,2',5,6'-Tetrachlorobiphenyl, neat, Solvent-neat, Unit 25MG, # of units-1, Cas.no. 41464-41-9