Here is a smart gadget that lets you take pH measurements conveniently. The Apera Instruments PH60F-Z Bluetooth pH Tester is ideal for surface testing on skin, textile and other materials. It also works in water solutions. It has 4 measurement display modes. It works with iOS and Android devices.
More gadgets like this: here
Thanks to smartphone connectivity, you can save and share measurement quickly. It has a cloud based data system.
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