TDS Test Pen

Product Description:
The TDS Test Pen is a compact and accurate tool used to measure Total Dissolved Solids (TDS) in water. It helps determine the purity of water by detecting dissolved salts, minerals, and impurities — making it ideal for aquariums, RO/DI systems, drinking water, hydroponics, and more.

With its easy-to-read digital display, fast results, and auto shut-off function, this pen is perfect for hobbyists, aquarists, and anyone who values clean, safe water. 

✅ Key Features:

• Accurate TDS Reading: Measures from 0–9999 ppm

• Digital LCD Screen: Clear, fast-read results

• One-Touch Operation: Simple and user-friendly

• Auto Shut-Off: Saves battery when not in use

• Portable & Lightweight: Fits easily in pockets or toolkits

📦 Specifications:

• Measurement Range: 0–9999 ppm

• Accuracy: ±2%

• Power Source: Replaceable battery (included)

• Display Type: Digital LCD

🐠 Suitable For:

• Freshwater & marine aquariums

• RO/DI water systems

• Tap water testing

• Hydroponics & agriculture

• Laboratories & household use

Why Use a TDS Pen?
High TDS can affect fish health, coral growth, and plant development. Monitoring it regularly ensures clean and safe water for all aquatic life.