The waterproof pHep 5 pH tester has a dual-level LCD that displays pH andC orF. At startup, pHep performs a self check then displays the remaining battery level to assure proper working condition. This tester also features a stability indicator and hold feature to prompt the user when to take the reading and freeze the display for easy and accurate recording. This pH/Temperature meter has a stainless steel temperature probe for faster and more precise temperature measurement and auto-compensation. 1 or 2 point calibration is made simple with automatic recognition of both standard and NIST buffer sets. We have designed the new pHep pH electrodes with an extendable reference junction and when the electrode is finally exhausted, simply insert a new electrode cartridge! pHep5 is supplied complete with protective cap, electrode removal tool, batteries and instructions. Features rugged, floating waterproof casing and replaceable pH electrode with an extendable junction.