SENRISE Water Test Pen, Water Quality Test Meter Digital Electric TDS-3 Hydroponics Water Purity Test Pen Temperature Meter, Quality Monitoring for Pool, Hydroponics, Aquarium Water, Filters

• 【High Quality】：A TDS meter (aka ppm pen, nutrient tester, TDS stick) is an inexpensive and convenient digital tool to instantly check your overall water quality.
• 【Easy to use】：With the push of a button, the TDS meter tells you your overall water purity level, which will be displayed on the screen in ppm (parts per million).
• 【Cost-effective】: The product has good linearity error and good consistency.
• 【Multi-Usage】: This item can be used in water purifiers and filters, food (vegetable, fruits) & drink quality monitoring, pools, spas, aquariums and hydroponics.
• 【Attention】: Do not drop the entire TDS meter in water or dip beyond the maximum immersion level (approximately 2″ – refer to manual for further information). This unit is not water- tight and will be damaged if water enters the unit.

Description Type: TDS-3 Digital Meter TDS stands for Total Dissolved Solids, which is any salt, metal or mineral in the water. The lower the TDS level, the purer the water, with 0 ppm being pure H2O. Ideal for industry professionals and household use. Specification: Measuring range: 0~9990ppm Accuracy: ±2%(F.S) Power supply: 2 × 1.5V Automatic temperature compensation: 0°C ~ 60°C Working temperature: 0°C~50°C Dimensions: 156mm × 40mm × 20mm Weight: 50g 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 displays the number 1HZ flashes - release the hand, tap the TEMP button to increase the value (tap the HOLD button to decrease the value) -- When the required value is reached; press MODE3 seconds again - the number on the LCD is no longer flashing, let go. The calibration is complete. Package Content: 1x TDS 3 Digital Meter 1x Black Carry Case 1x English User Manual Note: - Please allow minor errors due to manual measurement. Thanks for your understanding. - Monitors are not calibrated same, item colour displayed in photos may be showing slightly different from the real object. Please take the real one as standard.