(+)-Catechin, 500mg

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

Trifluralin, 100µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 1582-09-8

Acetochlor D11, 100µg/ml in Acetone, 1ml