Precision digital water quality tester for testing the water quality of household drinking water, swimming pool, hydroponics practical water quality tester Size: 180*25*45 mm pH measurement range: 0.00-14.00ph Basic error of ph measurement: 0.05ph Solution temperature compensation range: 0-70 Temperature accuracy: 1 Measured solution temperature range: 0-60 Power supply: 3.7V lithium battery product details: High-precision backlit large screen: with two-color display and high-definition backlight display, easy to deal with night readings; High-efficiency sensitivity bulb: The bulb has high sensitivity and is easy to respond quickly to hydrogen ions in the solution. It is refined at a high temperature of 1000 C and adopts a low-impedance glass sensing film. USB lithium battery charging: built-in lithium battery charging function, durable and easy to replace. Probe replaceable design: Probe plug-in design, easy to replace. Over-range alarm increase: When the pH value is lower than 3.5 or higher than 12.5, the screen will turn red, indicating that the liquid is close to strong acid or alkali. Automatic temperature compensation: The temperature will have a certain influence on the pH measurement, so the automatic temperature compensation function is very necessary. LCD high-definition color screen display: the screen color is not dazzling, can easily cope with the dark environment at night, and display the salinity value and temperature value data of water at the same time. Lithium-ion direct charging, strong battery life: USB lithium-ion charging, supporting a variety of charging methods. IP65 grade waterproof design: The instrument is IP65 grade waterproof and moistureproof design, even if it is dropped into water or salvaged in solution as soon as possible, it can be measured normally and practically. Widely used: Ideal for home or laboratory use; suitable for testing pH balance in drinking water, swimming pools.