It is widely used in industry, agriculture, nutrition, medicine, scientific research, environmental protection and other fields. The water quality test pen is small and stylish, easy to carry, easy to use and practical. The water quality test pen can test the purity of the water quality, e.g. such as whether there are heavy metals, etc. The higher the electrical conductivity, the more impurities in the water quality, which is not pure enough. The water quality test pen provides accurate water quality testing, which are safer and healthier. Function: 1. It is widely used in industry, agriculture, nutrition, medicine, scientific research, environmental protection and other fields. 2. The water quality test pen is small and stylish, easy to carry, easy to use and practical. 3. The water quality test pen can test the purity of the water quality, e.g. B. whether heavy metals etc. are present. 4. The higher the electrical conductivity, the more impurities in the water quality that is not pure enough. 5. The water quality test pen provides accurate water quality testing, which is safer and healthier. Specification: Item Type: Water Quality Test Pen Material: Plastic + Electronics Product Size: Approx. 18.5 x 3.7 x 3.7 cm / 7.3 x 1.5 x 1.5 inch Weight: Approx. 158 g / 5.6 oz Battery parameters: Built-in 3 x LR44 button batteries Battery type: button battery Battery model: LR44 Rated battery capacity: 160mAh Temperature measurement range: 0-60, resolution 0.1 PH measurement range: 1-14, resolution 0.01PH TDS measurement range: 0-9999 ppm Auto power off: 5 minutes Package List: 1 x Water Quality Test Pen 1 x English Instructions Note: 1. Please allow 0-2cm error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.