Calcite is a naturally occurring calcium carbonate media. Calcite neutralizes low acidic pH conditions and re-mineralizes reverse osmosis water. These cartridges will make water less aggressive and many prefer the pleasant taste added to drinking water. The media is dissolved during filtration, thus the cartridge should be replaced prior to complete depletion. As the Calcite's calcium carbonate neutralizes the water, it will increase hardness and a softener may become necessary after the neutralizing filter.
 Features: Naturally occurring material Inexpensive Slow reacting for controlled pH correction Self-limiting NSF standard 60 certified Calcite TM media.
 Specifications
: Micron 
Rating: 10 Micron nominal 
Dimensions: 20" x 2.5" 
Weight: 6 lbs 
Operation Temperature: 40F to 100F 
Flow Rate: 1 GPM 
Filter Media: Calcium Carbonate 
Filter Life: 10, 000 Gallons