The PEN-Ethanol(V) is suitable for measuring ethyl alcohol concentrations. The displayed unit is in ml/100ml. PEN-Ethanol(V) Digital Hand-held "PEN" Ethyl alcohol Refractometer Specifications Model PEN-Ethanol(V) Cat.No. 3754 Scale Ethyl alcohol Measurement Range Ethyl alcohol (ml/100ml): 0.0 to 53.0% (Automatic Temperature Compensation) Resolution Ethyl alcohol (ml/100ml) : 0.5% Measurement Accuracy Ethyl alcohol (ml/100ml) : ±1.0% Temperature compensation range 5 to 30℃ Ambient Temperature 5 to 30℃ Liquid Sample Temperature 10 to 100℃ Power Supply 1 × Size AAA alkaline battery Battery Life About 8,000 measurements with new alkaline batteries. International Protection Class IP65 Dust-tight and Protected against water jets. Prism head IP67 Dust-tight and Protected against the effects of temporary immersion in water. Dimensions & Weight 16×3.8×1.8cm, 70g (Main Unit only) Atago Ethyl alcohol PEN-Ethanol(V) Refractometer