This is the pH PAL Plus Tester and is a user-friendly and simple to use meter which incorporates an automatic calibration feature. All the user has to do is simply touch a button and the instrument will automatically recalibrate itself when it is used in conjunction with a 7.00 pH buffer solution. It is housed in a water resistant case and features an easy to read 8mm LCD display, which indicates pH over the range of 0 to 14 pH and has a resolution of 0.1 pH and an accuracy of ±0.2 pH. It has been specifically designed for use within the food/ catering industry. It is an invaluable tool when you are mixing concentrations with water.