The JE Jenco 601A digital pH/MV portable handheld water meter test is the perfect tool for measuring water quality. This meter is made by JENKO, a well-respected brand in the field of industrial automation and motion controls. It is perfect for measuring water quality in a variety of settings, including commercial and industrial applications. The meter comes without a probe, which makes it more versatile for different kinds of measurements. With its simple and easy-to-use interface, you can easily take readings of pH or MV, and get reliable and accurate results every time.