Handheld TDS Water Quality Tester Pen Blue Description A compact, easy to use digital water quality tester designed for quick on the spot readings. The penstyle tester provides instant numeric results without the need for color cards or test strips. Built for home and lab use, it helps you check water quality for drinking water, aquariums, pools, hydroponics and other everyday needs. Key benefits Instant readings: Turn on the tester, dip the probe, read the measurement on the large digital display. Three simple steps for a fast numeric result. Auto calibration: Builtin intelligent calibration finishes with a single click, removing the need for manual adjustments. Portable design: Lightweight, handheld form factor fits into a coat pocket or bag for convenient testing anywhere. Clear display: Large digital screen makes readings easy to read at a glance. Versatile use: Suitable for household use and routine laboratory checks across a wide range of water quality monitoring tasks. How it solves common problems Eliminates the need for color charts or disposable test strips by providing direct digital readouts. Reduces setup time with automatic calibration so measurements are quicker and simpler. Makes routine checks practical by being small and easy to carry, encouraging regular monitoring. Typical applications Drinking water testing at home to monitor general water quality. Aquarium maintenance to check water conditions for fish and plants. Hydroponics and gardening to monitor nutrient solution concentration. Swimming pool and spa spot checks to verify water condition during maintenance. Product specifications Colour: blue Material: plastic Quantity: 1pc Gross weight: 80g Size: 16 x 10 x 2.3 cm Packaging: 1pc water quality tester Notes Size and weight are measured manually and may have slight variations. Colour may vary slightly depending on monitor settings. Usage tip Rinse the probe with clean water between tests and follow the single click calibration before taking measurements for consistent results.