2,4-D-iso-propyl ester, 250mg

3,3’-Dichlorobenzidine

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

1,2,3,5,7,8-Hexachloronaphthalene,,,,