Description of filter The Activated Carbon Block filter 1 is Micron in size. It removes sediment, chlorine lime and other harmful chemicals. This filter helps to improve taste, smell and color of water. After water has passed through this filter it is softer and less likely to form scale. It is recommended to replace this filter every 10 – 12 months. This filter will fit in most of the following purifiers: All filter housings that take 10” filters Double and Triple Counter Top Water Purifiers 2, 3,4,5,6 and 7 Stage Water Filtration Systems Price: R69.00