Changes

{{procontable | proborder="1" cellpadding="5" cellspacing="0" align="center"|-! width="50%" style="background:#efefef;" | Advantages! style="background:#ffdead;" | Disadvantages|-| valign="top" | - Easy to use: after 15-20 litres, the upper container has to be refilled<br>- Colloidal silver creates some residual effect for 7.000 litres<br>- It has a “backwash option”, to clean the filter – <br>- It is small, which is attractive for transport and storage and results in less breakage than pot shaped filters.<br>- It is user friendly, easy to maintain and lasts longer than other ceramic filters<br>- It has a very low production cost and a very low cost for the users<br>

| convalign= "top" | - Clogging if water contains fine silts<br>- No indicator/warning system for user when leakage occurs<br>

|}}