Digital Water TDS Tester Pen

The Digital Water TDS Tester Pen measures Total Dissolved Solids (TDS) in water to provide a fast indication of water purity. Simply dip the pen into water and read the digital display—no complicated setup required.

Compact and portable, it’s suitable for testing drinking water, filtered water, tap water, aquariums, and more. Whether you’re monitoring filtration performance or checking water sources while traveling, this pen-style tester offers quick, convenient feedback.

💧 Key Features

• Measures Total Dissolved Solids (TDS)
• Clear digital display for easy reading
• Pen-style, portable design
• Simple dip-and-read operation
• Suitable for home and travel use
• Ideal for drinking water, filters, and aquariums