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

More valuable information:
✪What is dimension of the Geekpure Replacement Water Filters?
It is 2.5"ODx 10" height.
✪What is 4stage filter and function?
the 1st stage: PP Spun Filter, Reduce sand, dirt, sediment. life time:6-12months.
the 2nd stage: Granular Activited Carbon Filter, Reduce chlorine, taste & odors . life time:6-12months.
the 3rd stage: Carbon Block Filter, Reduce chlorine, taste & odors . life time:6-12months.
the 5th stage: Post Carbon Filter, Polish water for refined taste. life time: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?
1 x PP Sediment ,1 x Granular Activited Carbon , 1 x Carbon Block Filter and 1 x Post Carbon Filter.

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.