High Precision Water Hardness Instrument TDS Tester pH Meter for Aquarium Pool Water Quality TestingThis is a cost-effective and convenient digital tool designed to quickly assess overall water quality. TDS stands for Total Dissolved Solids, which refers to any inorganic salts, metals, or minerals present in water. With the press of a button, the meter measures TDS levels and displays results on the screen in ppm (parts per million). Lower TDS values indicate purer water, with distilled or pure water reading at 0 ppm. This device is ideal for testing tap water quality or determining when to replace water filters. Please note that the meter does not detect biological contaminants.The TDS tester is suitable for a wide range of applications, including drinking water evaluation, water filtration and purification systems, hydroponics (nutrient testing), aquariums, deionized water, swimming pools, spas, and various commercial and industrial uses. It features a rugged, durable design and comes with a protective carrying case. This handheld TDS meter is designed for reliable performance across different industries and is well-suited for commercial environments.The included case has a belt clip for easy portability. Advanced microprocessor technology and a built-in digital thermometer ensure accurate and efficient measurement data collection. The large, easy-to-read LCD screen allows for clear display of readings. This digital TDS meter is ideal for use in hydroponic systems, swimming pools, spas, aquariums, reef tanks, water ionizers, and general water quality monitoring.Key Specifications: - Measuring Range: 09990 ppm - Resolution: 1 ppm - Accuracy: 2% of reading - Power Supply: 2 x 1.5V LR44 button batteries (not included) - Color: Black - Material: Plastic - Size: 155 mmPackage Contents: 1 x TDS Pen Tester Note: Other items shown in images are not included. Lighting and display differences may cause slight variations in color representation. Measurement error due to manual handling is approximately 13 cm.