TDS Water Quality Tester Pen High Precision Digital Drinking Water Purity Detector Meter for Household Office Home Kitchen Aquarium

The TDS Water Quality Tester Pen provides accurate measurement of total dissolved solids in drinking water, aquariums, hydroponics, and laboratory applications. Featuring high-precision sensors with automatic temperature compensation, this portable digital meter delivers instant readings on a clear LCD display. Ideal for household, office, and professional use, it helps monitor water purity, filter performance, and nutrient solutions. The pen-style design includes auto-calibration, hold function, and low battery indicator for reliable operation. Compact and lightweight, it fits easily in a pocket or toolkit for on-the-go water quality testing.