Key Features of EZ9909 5-in-1 Digital Water Quality Test Pen

Multi-Parameter Testing
Simultaneously measures TDS, EC, pH, salinity, and temperature with high precision. Ideal for industrial, aquaculture, hydroponics, and household water quality monitoring.
Premium Build & Durability
Features a corrosion-resistant titanium alloy electrode and reinforced ABS housing for long-term reliability in harsh environments.
Customizable & User-Friendly
Supports OEM customization for industrial clients. Large backlit LCD ensures clear readings, while auto-calibration simplifies operation.
Portable & Efficient
Compact, lightweight design with a built-in battery for on-the-go testing. Delivers instant results with lab-grade accuracy.
Global Wholesale Advantage
Direct factory pricing, bulk discounts, and worldwide shipping—no middlemen, just unbeatable value.