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Specification:
FEED WATER PRESSURE: 40 - 100 PSI
TEMPERATE:40-110°F/5-45°C
PH:3.0 -11.0
MAX TDS :1000 PPM
TURBIDITY < 1.0 NTU
MAX SDI <4.0
HARDNESS < 5 GPG
Shelf life: 3Years

More valuable information:
✪What is dimension of the Geekpure Replacement Water Filters?
It is 2.5"ODx 10" height.
✪What is 3stage filter and function?
the 1st stage: PP Spun Filter, Remove sand, dirt, sediment. life time:6-12months.
the 2nd stage: Granular Activited Carbon Filter, Remove chlorine, taste & odors, very fine particulates. life time:6-12months.
the 3rd stage: Carbon Block Filter, Further remove chlorine, taste & odors, very fine particulates. life time:6-12months.
✪If not Geekpure, the filters is available to other brands Ro water purifier?
Sorry,it is special used for Geekpure RO-TW series or UF filtration.
✪What is in the box?
1pc PP Sediment ,1pc Granular Activited Carbon and 1pc Carbon Block Filters.

Note:
1. The Life Time of the Filter Cartridge Depends on Usage Amount and Feed Water Quality.
2.It Is Normal for Some Black Carbon Fines to Appear in the Water When Emptying the First 2 Tanks Of Water. The First 2 Tanks of Water Produced Should Be Emptied and Not Used.

Geekpure Replacement Pre-Filter Sets for RO-TW Series Reverse Osmosis Water Filter System (PP Sediment Granular Carbon Carbon Block. NO membrane) - B075FJFZ3X