TDS Meter Pen Type Digital Water Tester with 0-9990ppm Measurement Range for Home Drinking Water Aquariums Swimming Pool TDS digital water tester estimates and indicates the Total Dissolved Solids in a solution, by measuring the conductivity, suitable for many water purification applications. Features: MATERIAL:TDS meter, careful-made, smooth-surfaced, has protective cap, solid PVC shell, corrosion-resistant titanium alloy probe. WELL PERFORMANCE:Digital pen-type meter instantly measures TDS(0~9990ppm range) with sensitive probe, provides precise data value(±2% high accuracy). SCREEN DISPLAY:Data value is shown in big font on screen, which is convenient to read and record. EASY USE:Just a press on power key, putting the probe of TDS meter in the water can quickly test, get the reading. WIDE APPLICATION:It can test the purity of water, check whether the water is healthy, clean, used in drink water monitor, aquarium maintenance, hydroponics, pool, spa, etc. Specifications: Material: PVC + Electronic Components Color: White TDS Range: 0~9990ppm Accuracy: ±2% Power Supply: 2 * 1.5V LR41 Button Cell (NOT included) Dimension: 20*20*150mm / 0.78*0.78*5.90in Net Weight: 30g / 1.05oz Package Size: 30*30*160mm / 1.18*1.18*6.29in Package Weight: 33g / 1.16oz Note: Digital water meter only, other accessories in the pictures are not included. Due to lighting or other reasons, the picture and material object may slightly differ. Due to manual measurement, there may be deviation, please in kind prevail. Packing List:  1 * Digital Water Meter