This is a simple, inexpensive pocket pH tester.The pHep® family features a casing that is rugged and enhanced to fit your hand. The design of these testers also features a larger LCD so measurements are easier to read. Each instrument in the pHep® family comes with a protective cap that can be used as a measurement vessel. With the latest innovation of a non clogging fiber junction the new pHep® meters last much longer. You can simply pull out 1-2 mm of the junction fiber to completely renew it. The temperature sensor of the pHep® is exposed for rapid temperature compensation. These testers are the standard in quick, field pH testing.