Portable TDS Meter Water Quality Tester Pen for Accurate Water Testing

Clean, safe water shouldn’t be a guess—it should be a certainty. The TDS meter TDS-139 is designed to give you fast, reliable insight into your water quality in seconds. Compact and easy to carry, this portable water tester is perfect for home users, professionals, and anyone who values purity in every drop. Whether you’re checking drinking water, aquarium conditions, or filtration systems, it delivers quick and accurate readings you can trust. With its user-friendly design and precision performance, it turns water testing into a simple daily habit.

Key Features

• Wide measuring range of 0–1999 ppm (mg/L) for versatile water analysis
• High accuracy of ±2% F.S ensures dependable results every time
• Pocket-sized design (150×27×20mm) for effortless portability
• Comes with calibration solution (1382ppm at 25°C) for reliable accuracy maintenance
• Ideal for multiple applications including drinking water, pools, aquariums, labs, and industrial use
  
  

Why Choose Our TDS-139 Portable TDS Meter Water Quality Tester Pen
Unlike basic testers, this water quality tester is engineered for consistency, precision, and everyday practicality. Many alternatives lack calibration support, but this model includes a reference solution to maintain long-term accuracy. The TDS tester pen design makes it incredibly simple to use—just dip, read, and get instant results without complicated setup. It’s a dependable tool for anyone serious about monitoring water safety with confidence.

Perfect For
Homeowners checking drinking water safety, aquarium enthusiasts maintaining aquatic balance, pool and spa maintenance, laboratories, hydroponic growers, food and beverage professionals, and anyone who wants quick water quality assurance.

Pure Water Confidence Starts with One Simple Test
Take control of your water quality with accuracy you can see instantly. Make every drop count with reliable testing at your fingertips.