TDS monitors allow you to check up on the effectiveness of your RO unit.
TDS stands for Total Dissolved Solids and this is exactly what these units detect. Plugged into serious with your RO unit, it tests your RO unit's output to see how effective it is at purifying your aquarium water of contaminates by checking how many parts solid there is to how many parts water.
While most RO units have a long shelf life, their performance does deteriorate with time and use, and it may be time to change parts of its system when your TDS monitor starts displaying larger amounts of solids.
Order your TDS from the selection below from Swell UK and enjoy the Next Working Day Delivery options available as well as low prices