The Tianer Water Quality Multi-Parameter Measuring Instrument is developed and designed based on the principles of photoelectric detection and chemical colorimetric measurement, and is suitable for determining turbidity, color, residual chlorine, total chlorine, chlorine dioxide, available chlorine, combined chlorine, chlorite, ammonia nitrogen, nitrite, ozone, urea, and other parameters in drinking water.Total Hardness, Calcium Hardness, Magnesium Hardness、Manganese、Iron, Hexavalent Chromium、Manganese Index, pH, Dissolved OxygenChlorineChemicalConductivityItems (available for customization), equipped with a high-definition color LCD touch screen, easy to operate, featuring an internal high-capacity lithium battery, and a high-strength waterproof and acid-resistant portable case, suitable for use in the wilderness or laboratory. Portable water quality testing system for inspection, monitoring, and data management. Manufacturer direct sales, supports customization, and offers free water sample testing.