Key Features of 4-in-1 Water Quality Test Pen

Ultra-Precise Multi-Parameter Testing

Simultaneously measures TDS, EC, pH, and temperature with lab-grade accuracy (±0.01 pH resolution, ±2% TDS/EC tolerance). Features a titanium alloy electrode and triple-layer membrane for extended durability in harsh environments.

Professional-Grade Construction

Military-grade ABS housing with IP67 waterproof rating and shockproof rubberized grip. Includes automatic temperature compensation (ATC) for reliable readings across 0-80°C.

Smart User Experience

Auto-calibration via included pH buffer solutions, low-battery indicator, and 3-second instant readings. Backlit LCD displays all 4 parameters simultaneously with hold function.

Versatile Applications

Ideal for drinking water analysis, hydroponics, aquarium maintenance, swimming pool monitoring, and industrial wastewater testing. Replaceable sensor caps extend lifespan to 5+ years.

Bulk Purchase Advantage

Direct-from-factory pricing with MOQ discounts. Ships with calibration solutions, carrying case, and 3-year warranty. Compatible with universal probe replacements.