Heptachlor-endo-epoxide (trans-, isomer A), 100 ng/µl, 1ml

Flucythrinate, 10 ng/µl, 10ml

Benzyl 4-hydroxybenzoate

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