This is the wide-spectrum replacement filter cartridge filter for canister kitchen filters for all our countertop and undercounter water filters, regardless of the number of canisters.
Replace these filter cartridges once a year.
For a single canister filter or for first in line of a 2 or more canister system, we recommend the KR-101N. For last in line in a 2 or more canister system, we suggest the KR-101A.
The filter cartridge contains copper-zinc and granulated carbon filtering media. Filters chlorine and hundreds of other contaminants.  The Wide Spectrum Cartridges have the FOAM ADVANTAGE kdf, pre-washed granulated activated carbon and sediment filtration.
This filter will remove PFOAs. Â This cartridge does not filter chloramine.
OPTIONS
Standard Wide-spectrum Filter with 5-micron sediment filtration KR-101N
OR
Standard Wide-spectrum Filter with filtration of cysts and microfibers included. (1 micron absolute sediment filter) KR-101A
Wide-spectrum cartridge with the addition of microfiber and cyst filtration is the same cartridge plus additional filtration of finer materials including small microfibers and cysts. This option uses 1 micron absolute filtration. KR-101A
This KR-101A replacement filter cartridge filters water to 1 micron. This is fine enough to remove cysts. This is an alternative to the KR-101N Standard wide-spectrum cartridge. This one-micron filter will remove particles 1 micron and larger with 99.99% removal. A micron is 1/1000th of a millimeter.
Click this link to our blog on microfibers.Â
These fits all of our kitchen canister filters.
Jess (verified owner) –
I have this under my kitchen sink. My city has clean water, not contaminated by industrial or agricultural chemicals, but there is a lot of chlorine in the water that makes it taste bad. I have this filter on the cold water line under the kitchen sink, so when I make fizzy water or coffee or tea it tastes good. I try to use the hot water tap for everything else to spare the filter and make it last a little longer, but it still needs to be replaced around every 7 months. I know it needs replacing when the water starts tasting like chlorine again.