Precision Multifunctional Water Quality Tester Pen
Advanced 4-in-1 testing for TDS, pH, EC, and temperature with high-accuracy sensors. Lab-grade probes ensure reliable readings for drinking water, aquariums, hydroponics, and pool maintenance. Durable ABS body with waterproof design and clear LCD display. Auto-calibration function and replaceable electrode for long-term use. Perfect for home, laboratory, or industrial applications. Compact and portable with instant one-button operation. Includes protective cap and battery. Global wholesale pricing with bulk discounts—trusted supplier for quality testing tools.