Digital PH /TDS/ EC Meter Tester Thermometer Pen Water Purity PPM Filter Hydroponic for Aquarium Pool Water Monitor Get Your Water Quality Readings in Seconds and Lab-Quality Results from Home Professional Water Quality Test Pen is a quick and reliable water test meter. Widely Use Application Our portable PH/ TDC&EC Meter kit is specially designed for lab-grade PH and conductivity measurement in the field with a variety of intelligent functions. Pure water production and private water sources like wells, seawater Fresh drinking water, swimming pool water, soil, aquaculture, food processing Testing Nutrient levels in hydroponic setups RO, DI, or distillation unit effectiveness The Enzyme, Saliva, and Chemical experiment Specifications PH Meter Our Digital ppm tester and ph tester provides 0.01 PH Accuracy water qualities and makes your water quality health expert! Measure Range: 0.00-14.00pH Resolution: 0.01pH Accuracy: 0.01pH Power Supply: 2 x 1.5V LR44 (Keep using more than 500 hours) Dimensions: 155mm*31mm*18mm Weight: 50 g Calibration: Two Points Automatic Calibration Button Automatic Temperature Compensation: 0-60/ 32-40 TDS Meter Even though no TDS Meter can replicate the accuracy of an expensive laboratory instrument, this efficient TDS Meter is great for a close estimate. Measurements Range: 0-9 999ppm ( 999ppm Display x 10) Accuracy: 2% Power Supply: 2*1.5V (LR44 Button Cell) (not Included) Dimensions: 144mm * 25mm * 14mm/ 5.57 x 0.98 x0.55 Net Weight: 55g How to Use 1. Remove the protective cover from the meter and clean the electrode of the PH Meter with distilled water 2. Connect the switch located on the battery compartment 3. Just insert the Water test pen into the solution and stir the solution and wait just 2 min 4. Read the displayed reading