Precision 4-in-1 Water Testing Pen
Ultra-accurate digital measurement for TDS, EC, pH, and temperature with a high-resolution LCD screen. Industrial-grade sensor probes ensure ±0.01 pH and ±1% TDS/EC accuracy for laboratory-level reliability. Durable titanium alloy electrode with triple-layer waterproof sealing, resistant to corrosion and oxidation. Auto-calibration function with included buffer solutions for effortless maintenance. Ideal for aquaculture, hydroponics, drinking water analysis, and industrial water treatment. Compact pen-shaped design with a built-in thermometer for instant on-site testing. Batch discounts available for bulk orders—wholesale pricing ensures unmatched value for global distributors.