4-in-1 Water Quality Test Pen – Premium TDS, EC, pH & Temp Meter

Multi-Parameter Testing
– Instantly measures TDS (0-9999ppm), EC (0-9999µS/cm), pH (0-14), and temperature (0-80°C) with high-precision sensors for comprehensive water analysis.
Advanced Electrode Technology
– Features a durable titanium alloy TDS/EC probe and reinforced glass pH sensor for long-term accuracy, resistant to corrosion and chemical wear.
One-Touch Calibration
– Pre-calibrated pH mode with auto-buffer recognition; includes calibration powder for quick adjustments to maintain consistent performance.
Rugged & Portable Design
– IP67 waterproof housing with an ergonomic anti-slip grip, ideal for on-site testing in pools, aquariums, hydroponics, or industrial water treatment.
Auto-Temp Compensation
– Built-in ATC ensures reliable readings across varying water temperatures, critical for aquaculture and drinking water safety checks.
Backlit LCD Display
– Clear dual-scale readings with bold digits for low-light conditions, plus auto-shutoff to conserve battery life during fieldwork.
Wide Application Scope
– Trusted by homeowners, pool maintenance crews, and commercial fish farms for real-time monitoring without lab equipment.
Bulk Order Advantage
– Wholesale pricing available for distributors and large-scale buyers seeking reliable, cost-effective water testing solutions.
Certified Accuracy
– Complies with ISO standards, backed by a 12-month warranty for professional-grade performance.