迫套 Reagents Reduced-fat milk Dilute acetic acid (1: 9) Ethyl alcohol Diethyl ether 1% CuSO 0. 4MNaoh in salineReduced-fat milk Dilute acetic acid (1:9) Ethyl alcohol Diethyl ether 1% CuSO4(aq) 0.4 M NaOH in saline Reagents