Usage: Energy water machine, functional water machine, electrolytic water machine, ultrafiltration water purifier, water machine with alkaline or mineralized filter, water test water such as energy cup Bio-test pen is easy to operate, easy to carry and use Differences between water and energy water can be identified by placing the pen on the solution you are testing. Pen head emits mineral energy water, but water does not emit light Bio-test pens are used to detect different objects between water, energy and mineral water. In general, marks and minerals in water can increase energy in the water Bio-tester pen is widely used for energy detection of various energy water machines and can also be used to check the process of water and wine, Manufacturer: Uitndvyte