There is no vent to let air in so the water ... or PPM dissolved solids. The tall filters have at least a 1 in 3 failure rate out of the box - as in no water flow or so slow the pitcher is ...

Under-sink water filters can deliver cleaner, better-tasting drinking water the old-fashioned way: from a spout. Under-sink reverse osmosis water filters are recommended if your water contains a ...

A measure of how effectively the filter removed flavor taints, along with the resulting odor taints, that CR added to plain water with minimal intrinsic flavor and odor (the "control" water).