Your statement regarding refrig filter is misleading, at best. Loose granular carbon filters, regardless of the source of the carbon, are effective filters for chlorine and other compounds. Coconut-based carbon can be packaged as loose granular or compressed/extruded as a carbon block. It appears that you are confusing the source of carbon with the packaging. For all you know, the carbon in refrig filters is coconut based. While carbon block offers some advantages in non back-flushing applications, to suggest that a refrig filter will not filter effectively is just wrong as they typically clean up the taste of water just fine, although their lifespan is limited and they are expensive. A filtration effectiveness of 15-20 micros is fine as there is no evidence to suggest that finer sediment filtration has any benefit.
Regarding the size of the filter, the effectiveness is proportional to the amount of time the water is in contact with the carbon. For the very low water flow rates in a refrig, a small filter is fine. For whole house applications, a larger amount of carbon is needed because of the much higher water flow rates. Why you would choose to try to associate filter size with the quality of the filtration without considering the low water flow rates in a refrig is very odd.
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Don't think your tiny carbon filter in the fridge protects you for real.
It is at best 15-20 micron effectiveness, moreover it is not coconut carbon but lose carbon granular.
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Last edited by tuccillo; 03-18-2015 at 09:58 AM.
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