ASTM D5501-12 - Calibartion Standard 4: 3 components; Methanol [CAS:67-56-1]  0.2% (w/w) ; n-Heptane [CAS:142-82-5]  4% (w/w) ; Ethanol [CAS:64-17-5]  90% (w/w)  in Iso-octane