Metoprolol, 1000µg/ml in MeOH, 1ml

D6-Chlorotoluron, 100 µg/ml, Acetone, 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

2,4,4-Trimethyl-2-pentene