This meter utilizes the same body and electronics as the CWP Instruments Accurate pH 3 but has the added advantage of a larger corded electrode. The larger electrode enhances the meters electronic circuitry making it not only very accurate but also it has very stable readings. The corded electrode allows the user to test a large body of solution without the chance of dropping the meter’s body into the solution being tested. The electrode is replaceable and the meter has a 2 point calibration system for superior accuracy. Both calibration screws are located inside the battery compartment. The meter has low power consumption circuitry with an auto OFF feature. It uses four 1.5 volt button type batteries.