High light transmittance refractive prism, resistance, fast response, high precision, eliminating tedious measurement steps, fast and accurate measurement. Built-in temperature compensation: When measuring supercooled or superheated solutions, automatic temperature compensation function can reduce the measurement error caused by different temperatures. Zero point setting: drip clean water into the sample tank, click the ZERO button, confirm that the value is 0, clean and dry the sample tank for measurement. High-definition backlit display, easy to measure in strong light and at night. Widely used: used to quickly determine the sugar content in liquids; in agriculture, determine the sugar content of fruits and . In addition, other physical indicators of liquids can be calculated by measuring the refractive index. Widely used in sugar making, beverages, food, agricultural production, industrial production, scientific research, etc. Notes: When measuring, you need to squeeze the juice first, and then drip it into the sample tank with a dropper. When measuring, try to control the temperature at 10-40C. This instrument is a precision optical instrument and bumping and falling are prohibited. Do not scratch the optical prism in the measuring slot with hard objects. When not in use, please fully charge the instrument and store it in a dry place as much as possible. Prohibit water ingress into the instrument. Colour:Photo Color Material:plastic Package Contents: 1 x Digital Refractometer 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.