Trimethoprim, >99%, 1g

alpha,alpha,alpha-Trichlorotoluene, 1000mg

1,2,3-Trimethylbenzene, 100 µg/ml, Methanol, 1ml

Nitrogen Calibration Set-Low Boiling Solvents Units: 1x1mL ampoules or 10mL screw-capped bottle Nitrogen introduced using Pyridine Catalogue No. Concentration Matrix: isooctane mg/kg (ppm) S-4140-0 Blank S-4140-03 0.3