The environmental tester was developed to directly determine the pH value in aqueous media such as wine or beer. Furthermore, the pH meter can also be used for other media with a low conductivity. The waterproof pH tester is used for the fast and accurate measurement of pH. The practical display makes the pH value on the pH meter easy to read. Due to the waterproof and robust housing (IP 67), the pH tester can also be used under difficult conditions. Recalibration always guarantees optimum accuracy and is very easy to perform using the optionally available calibration kits (automatic calibration function without calibration screws - only to be performed via the keyboard).