A new Water Quality Tester Pen. Water Quality Tester Pen with LCD Display. Detects Organic Compounds, Heavy Metals and Soluble Salt. The pen is an amazing little gizmo that allows you to easily check the temperature and quality of your water. With this smart home gadget, you’ll be able to easily find out whether your water needs purification before it is being consumed. This water quality tester is great for people who live in countries where the quality of tap water is questionable.
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