Waterproof. - Completely sealed against humidity and designed to float. Set/Hold Button. - Allows the user to freeze the reading for easy and accurate recording. Affordable & Easy-to-use. - Measures on the spot accurately and inexpensively. Specifications Instruction Manual

Oxidation is a process in which a molecule or ion loses electrons. Reduction is a process by which electrons are gained. A measurement of the potential for these processes to occur is called ORP (Oxidation Reduction Potential). Hanna's ORP meter is a unique hand-held tester developed to determine this value. The HI 98120 is a waterproof ORP and temperature meter. ORP can be measured in a range of +/-1000mV and temperature can be displayed in °C or °F. The meter is factory calibrated and measurements are highly accurate with a unique stability indicator on the LCD. HI 98120 provides a battery level indication at startup and the Battery Error Prevention System (BEPS) avoids erroneous readings caused by low voltage level.

Replaceable electrode cartridge featuring an extendable junction.