OQ response linearity test standard includes n-heptadecane (C17) 1.5 µg/mL, n-octadecane (C18) 10 µg/mL, n-nonadecane (C19) 2 µg/mL, n-eicosane (C20) 100 µg/mL, n-docosane (C22) 1000 µg/mL, n-tetracosane (C24) 10 000 µg/mL in isooctane, 1 mL/ampoule.