The HortiCare pH Check is specially designed for hydroponics nutrient test. The success of hydroponics lies in the control of nutrient solutions. Every plant species has its own pH requirement so its roots are able to absorb the nutrients more effectively. Nutrients solutions that are too acidic or alkaline will cause the plant to retard and affects growth. This meter is able to measure the nutrient pH accurately. It is portable and simple to maintain with regular calibration. The auto-endpoint feature makes calibration and each measurement consistent and accurate. You don't need to be a specialist to take an accurate reading. The HortiCare pH Check puts the professional touch to your hydroponics hobby, where only commercial growers dominate.Press Button CalibrationEffortless calibration with a single touch of the button.Auto-Endpoint Reading & CalibrationAlways give you the right reading, the tester is able to lock to an endpoint reading, thus eliminating guesswork.Hold FunctionAble to freeze display for ease of reading.