Compact handheld multiparameter water quality meter for EC, TDS, Salinity, pH and ORP with automatic range switching Key features Auto range: converts units as needed for easy reading, reducing setup time and mistakes Clear, fast readings suitable for field or lab use Broad measurement capabilities in one unit Electrical conductivity (EC) Range: 010000 µS/cm (auto converts to mS/cm as needed) Resolution: 1 µS/cm Accuracy: ±2% F.S. Total dissolved solids (TDS) Range: 010000 ppm Resolution: 1 ppm Accuracy: ±2% F.S. Auto conversion to related units (ppt as applicable) Salinity Range: 010000 ppm or 025.00 % Resolution: 1 ppm (ppm) or 0.1 ppt or 0.01 % Accuracy: 0.015.00 % ±0.1% F.S.; 5.0125.00 % ±1% F.S. Auto range between salinity scales for convenience pH Range: 0.0114.00 pH Resolution: 0.01 pH Accuracy: ±0.05 pH ORP Range: ±999 mV Resolution: 1 mV Accuracy: ±2 mV Applications Aquariums and aquaculture: monitor EC, TDS, salinity and pH to protect livestock Hydroponics and irrigation: optimize nutrient delivery and water quality Pools, spas and fountains: maintain balanced pH, salinity and oxidation potential Notes Simple, compact design supports onsite testing with reliable performance.