The CD97 electronic TDS meter (Total Dissolved Solids) is designed to test the quality of your existing water supply and/or the performance of your reverse osmosis system.

The TDS meter will give a value in parts-per-million which represents the total amount of ions (i.e. pollutants) in the water by volume.  By testing your standard mains water and your RO processed water, you can establish how well the RO is performing and monitor its progress over time (i.e. this test will illustrate any performance issues with cartridges or the membrane).

These meters are also useful for testing in critical applications where a specific TDS is required.

All units shipped are pre-calibrated and come with the required batteries.