NOTE!!! 1.Test pure water brix is 0.0% before every using(0.2% accuracy),if not ,please calibrate first. 2.Sample quantity:1/2 of the depth of the sampling tank at least. 3.Cleaning measuring tank before measuring and calibration. l Accurancy:0.2% l Range: 0-35% l Resolution:0.1% Brix l Ambient Temperature:10-40 l Battery:Lithium 1. Calibration: Clean the sample chamber and Power on. Drop about 0.3ml purified waterat least,close the lid Press the "CAL/SET "button to prepare for calibration. Twinkling Press "CAL/SET "button again to confirm the calibration. It will show 0.0% brix,calibration succeed 2How to use: Clean the sample chamber and Power on. Drop samples. Close the lid Press "MEAS"button to getdata within 3 seconds. Colour: Yellow Material: Plastic Package Contents: 1*Sugar meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.