The Portable LCD Digital TDS Water Quality Tester Pen is a must-have device for checking the purity and safety of your water. This 3-in-1 digital meter measures TDS (Total Dissolved Solids), EC (Electrical Conductivity), and Temperature, helping you ensure that your water is clean and healthy to drink.

With a clear LCD display, it provides accurate readings within seconds — just dip the tester into water and read the results instantly. It’s ideal for testing RO systems, tap water, bottled water, aquariums, swimming pools, hydroponics, and laboratories.

Compact, portable, and battery-operated, this digital TDS pen is perfect for home, travel, and professional use.

⚙️ Key Features

• 💧 3-in-1 Function – Measures TDS, EC, and Temperature
• 📟 Digital LCD Display – Clear and easy-to-read results
• ⚡ High Accuracy – Reliable sensor with instant response
• 🔋 Battery Operated – Long battery life and auto power-off
• 🧪 Wide Application – For drinking water, RO, aquariums, pools, and hydroponics
• 🧴 Compact & Portable – Pocket-size design, easy to carry
• 🧠 User-Friendly – One-button operation, quick calibration