The Lovibond ® SD 80 Pocket TDS Meter is a compact, easy-to-use handheld instrument for the measurement of Total Dissolved Solids. Up to 25 results can be stored in the meter’s memory with date, time and temperature information for each result. A backlit LCD display shows result and temperature simultaneously, with additional information including date and time on keypress making accurate measurements simple. Waterproof. Comes with lanyard and batteries.