What are the different types of filters used in water dispensers?
• Carbon filters: Many plumbed in water dispensers found in shops and offices contain low cost/ low quality ’25 micron’ or ’10 micron’ carbon filters without a ‘carbon block’ (although the cost savings taken by the supplier without the customers knowledge will not normally be passed on to the customer). These carbon filters improve the taste but do not sift out relatively large particles found in drinking tap water. • Carbon block: Tiny flakes of carbon constantly break away from carbon filters. A carbon block is a final stage in an advanced filtration system that removes these flakes to prevent you drinking them. Many water dispensers at present are not provided with a carbon block to reduce the suppliers costs. • Pre-filter: A pre-filter of a dispenser is recommended to be installed upstream of a main filter that is rated at less than 10 microns. The pre-filter is essentially a fine sieve and reduces the bulk of fine particles that can be found in tap water that would otherwise rapid
