2-Methylsulfonyl-4-trifluoromethyl benzoic acid

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

DL-4-Methoxymethamphetamine hydrochloride, see 9691.11 (+/-)-PMMA, , Solvent-, Unit , # of units-, Cas.no.

2,2',4,6,6'-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane