TD-2001 Filter Air Purifier about 2 months for the

about 2 months for the average household for optimal performance

perfect for your bedroom，bathroom，kitchen

It can also filter fine particle impurities as tiny as 0

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TD-2001 Filter Air Purifier about 2 months for theSafe to Use: Made of premium food grade materials,environmentally friendly, harmless, non toxic and safe to use. Create healthy and Fresh Filtered Water: chlorine, copper, mercury, zinc and cadmium impurities found in tap water,keep your water fresh and good tasting. First Use: When the filter is first washed, the filtered water may be grayish black. This is the dissolution of activated carbon powder from inside of cartridge. It is a normal phenomenon