Biomaster Filter Cartridges (3 pack)

Filter Pack for servicing the Biomaster™ RO drinking water system.  This includes 3 cartridges that should be changed as a set.

• sediment prefilter
• carbon block prefilter
• carbon block postfilter

Life expectancy of these cartridges depends on incoming water quality and the amount of water filtered. As a general rule, for a standard household application, they should be changed annually.