Valve Timing Mixture 4 Analytes, each Wt.% as listed in n-hexane; units: 1x1mL, 5x1mL Name Wt.% Methylcyclopentane 10.00 Diisopropyl ether 10.00 Ethyl tert-butyl ether 10.00Methyl tert-butyl ether 10.00 n