Originally Posted by osirissail
Tellie: Very good information - but how do you know / find out about which charcoal filter is better/worse? Sarcastically speaking - aren't they all now made in some Chinese factory?
The easy answer is to buy from any reputable watermaker
company. But without getting into the exact science which is not my area of expertise, the flow abilities along with residual chlorine removal
needs to be matched. Most under the sink type carbon filters will flow easier. Their main concern is taste so if they remove 65% of residual chlorine they work fine. A good watermaker charcoal filter should reduce into the high 90% range. The thing is, to look at them, they can look the same. I have had problems with owners buying
their charcoal filters at the box stores and damaging their membranes in a short amount of time.
PS the ones I've always trusted KX are made in the USA