Heptachlor-exo-epoxide, 100 µg/ml, Methanol, 1ml

Hexachlorobenzene, 100 µg/ml, Acetonitrile, 5ml

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

SDWA Total Residual Chlorine