5-in-1 Digital Water Quality Tester Pen – Precision Monitoring for Aquatic Environments
Ultra-precise sensor technology measures TDS, EC, pH, salinity, and temperature instantly with ±0.5% accuracy. Durable ABS housing with reinforced probe tip resists corrosion in freshwater and saltwater applications. Auto-calibration function ensures long-term reliability for aquariums, hydroponics, pools, and drinking water testing. Large backlit LCD displays real-time results with hold function for stable readings. Compact pen-style design fits in pockets or toolkits, powered by replaceable batteries for extended field use. Ideal for hobbyists, aquaculture professionals, and water treatment specialists. Waterproof casing (IP67 rated) withstands splashes and humid conditions. Includes protective cap and detailed manual for immediate use. *Note: Comes pre-calibrated; includes calibration solutions for pH and EC verification.*