It can remove up to 99 9 of bacteria from water but will not remove viruses such as hepatitis and rotavirus.
Make a water filter out of a pop bottle.
Most if not all the materials can be found in or around your house.
Then go backwards with the finest filter nearest to the open top.
Sapwood such as pine contains xylem which can absorb and filter out dirt and bacteria.
Starting with the bicycle bottle full of filtered water place the bottle nipple over the filter nipple.
This water filter is very easy and quick to make.
Water bottle sciss.
So cut the base off the plastic bottle first put the bottle upside down in to a coffee cup.
You will need to build a support or the lot will fall over by the way.
This will mean the clean water comes out of the bottle into the coffee cup.
The pop up nipple on the bicyclest bottle just happens to fit over the nipple tube that fits on the end of the filter that otherwise drains into your filtered water receiveing vessel.
From top of bottle to bottom.
Simple water filter out of a waterbottle.
A water filter can be a necessary survival item if you have no access to clean water.