Appendix IX Mix #2

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

PCB No. 78, 100µg/ml in Isooctane, 1ml

Perfluoro-n-[1,2-13C2]tetradecanoic acid, 1.2ml x 50ug/ml, methanol