Professional Handheld Alcohol 0‑80% Test Refractometer, Tester Meter Measure Instrument
- 【Function】Our TDS meter tester has a hold function and an automatic shutdown function, which can save the measured value for easy reading and recording. Turn off the meter after 10 minutes of non-use to save battery power. Press the "TEMP" key to switch the thermometer between Fahrenheit and Celsius..
- 【Measuring range】 0-9999ppm, resolution 1ppm. From 1,000 to 9,999 ppm, with a resolution of 10 ppm, expressed in drinking x 10 images, factory calibrated. To ensure that you always drink pure and safe water, we recommend that every household use a TDS tester..
- 【Multiple choices】 We have a variety of different colors for you to choose, different colors meet your different needs, you can choose the right color according to your needs. Main colors: yellow, gray, red as shown in the figure (optional)..