Water Quality Test Pen, TDS-3 Electric Digital Tester for Hydroponics, Quality Monitoring

"High Quality: A TDS tester (also called ppm pen, nutrient tester, TDS stick) is an inexpensive and convenient digital tool to instantly check the overall quality of your water.

Easy to Use: With the push of a button, the TDS meter will tell you your overall water purity level, which will be displayed on the screen in ppm (parts per million).

Economical: The product has good linearity error and consistency.

Multi-Purpose: This item can be used in water purifiers and filters, food (vegetables, fruits) and beverage quality monitoring, swimming pools, spas, aquariums and hydroponics.

Caution: Do not drop the entire TDS meter into water or submerge beyond the maximum immersion level (approximately 2 inches - refer to the manual for more information). This unit is not waterproof and will be damaged if water enters the device.

Description: Type: TDS-3 digital meter. TDS stands for Total Dissolved Solids, which is any salt, metal or mineral present in water. The lower the TDS level, the purer the water, with 0 ppm being pure H2O. Ideal for both industrial professionals and home use. Specifications: Measuring range: 0 ~ 9990 ppm. Accuracy: ±2% (FS) Power supply: 2 × 1.5 V. Automatic temperature compensation: 0 °C ~ 60 °C. Operating temperature: 0 °C ~ 50 °C. Dimensions: 156 x 40 x 20 mm. Weight: 50 g. The calibration procedure is as follows: In the test solution, press the ON/OFF button to turn it on. Press and hold the TEMP button for 3 seconds. The LCD screen displays the number 1Hz flashing - Release your hand, press the TEMP button to increase the value (press the HOLD button to decrease the value). When the required value is reached. Press MOD3 seconds again, the number on the LCD screen no longer flashes, let it flash again. Calibration is complete. Package Included: 1 x TDS 3 Digital Meter. 1 x Black Carrying Case. 1 x English User Manual. Note: - Please allow slight dimension difference due to different manual measurement. Thanks for your understanding. - Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please take the real one as standard."