National Institute for Occupational Safety and Health, NIOSH Manual of Analytical Methods… (1994)
“ EPN.* Isooctane, chromatoquality.* Calibration stock solution, 15 mg/mL isoctane (prepare fresh daily) : NOTE: 4 μL of this solution contains a mass of EPN (0.06 mg) equivalent to a 120-L air sample at OSHA PEL. Nitrogen, purified. Hydrogen, prepurified. Oxygen, purified. Air, filtered, compressed. ”
