Digital medical refractometer serum protein concentration of urine hydrometer CNNX2

Digital refractometer (salinity) Manual Specifications: CNNX2 URINE urine specific gravity 1.000-1.050 SERUM P serum protein 0-12 RI (nD) (refractive index) 1.3330-1.39000 ● 0-40 ℃ Automatic Temperature Compensation (ATC) ● All Model calibration ● Use distilled water for three minutes without operation of automatic shutdown ● Stainless steel cuvette ● Humidity: less than 90% ● Altitude: less than 2000m ● Operating temperature: 0 ℃ (32 ℉) - 40 ℃ (104 ℉)... ● Storage temperature: -10 ℃ (14 ℉) - 50 ℃ (122 ℉) ● Battery: One AA 7 1.5V alkaline batteries ● Use time: each battery to support more than 8000 times of measurement ● Weight: 130 g ● Size: 118mm × 62mm × 32mm Note: ● digital refractometer is an electronic instrument, dropping or rough use may cause damage to the instrument. ● prism made of optical glass, easy to scratch. Do not use rough materials to clean prism. ● Wipe clean up the prism with a soft cloth or paper towel after each use. ● Do not wash or directly into the water faucet. ● If the prism surface is covered with an oily substance, which can affect accuracy. Clean with a weak aggressive cleaning agents. ● Do not use the equipment before reading the instructions carefully. 1 stainless steel sample cell 2 ------ ------ ------ prism cover 3 Operating panel 5 prism 4 ------ ------ battery compartment packing list:? ?? .................. 1 distilled water (no air) Battery (1.5 v) .................. .. 1 dropper ................................. .. 1 operator panel: 1 - - LCD 2 --- 3 --- reticle name engraved line switching key 5 --- 4 --- Calibration key measure key operation Description: Function keys READ READ boot: Press READ key once, the instrument is turned on. At the same time, the temperature of the liquid crystal display. Three minutes without operating automatic shutdown. Battery power warning, please replace the battery on the LCD display. READ measurement: dropped more than about 1 ml sample solution to the prism surface, covered with the light shielding cover, press the READ button within one second to display the measurement results. Drops of clean water before measuring prism surface and the sample cell, you get more accurate results. ZERO key ZERO zero detection: Click ZERO button to complete the zero detection. It shows the measured refractive index value of calibration solution: Hold the ZERO button for three seconds to complete the calibration. SCALES SCALES key groove conversion: Press SCALES arrow key until the liquid crystal refers to the name of the target reticle. Calibration that: ● To measure accurately, every day the instrument calibration, instrument and distilled water is recommended to be placed in the same stable temperature calibration than half an hour later, at 20 degrees temperature calibration will get the best results. ● dropped more than 1 ml of distilled water on the prism surface, covered with the light shielding cover, and hold the ZERO button for three seconds, the LCD will display "CAL", until "END" calibration function is completed. Press ZERO key one can detect the current value of the refractive index of distilled water. ● After the calibration is complete, wipe with a soft cloth to clean the prism or paper towels.