Digital TDS Water Testing Pen – High-Accuracy Portable TDS Meter for Drinking Water, RO Systems, Aquariums & Hydroponics | Total Dissolved Solids Tester

This Digital TDS Water Testing Pen provides accurate and quick readings of Total Dissolved Solids to help you check the purity of your water anytime. Perfect for testing RO-filtered water, aquariums, pools, laboratories, hydroponic setups, and household water sources. Equipped with a sensitive sensor and digital display, it delivers instant results with just one button. Its compact, pen-like design makes it easy to carry and use anywhere. Whether you want to ensure safe drinking water or monitor water quality for plants and fish, this TDS meter is a dependable, essential tool.✅ Key ResponsibilitiesMeasures Total Dissolved Solids (TDS) instantlyHigh-accuracy digital readingEasy one-button operationIdeal for RO systems, aquariums, hydroponics & labsPortable, lightweight pen designAuto-off function to save batteryEnsures safe and clean water quality