Filtering Silt and Gunk out before chemical treatment

Both

Cheers

Here is a link to something similar to what I use that Ben posted awile back.

http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=9147

I found it easiest to modify a sport-bottle top that came with one of my narrow mouth platypus. I simply cut the spout off with a dremmel cutting wheel and had a perfect circular opening. It weighs around .1 ounce and is a lot more convenient than a bandana or coffee filter.

*Edit* just wanted to add that is a lot easier to pour water thru a screen filter when the platypus is partially collapsed, otherwise the pressure from the trapped air makes it difficult for the water to pass thru the filter.

http://www.steripen.com/fitsall

This works OK with the Platys.

be sure and read this most informative thread on the topic

http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=13654&disable_pagination=1

OK. Excellent information. Thanks

For folks that use coffee filters or bandanas, what is used as a filter holder?

Bruce:

I use narrow-mouth platys too. For filtering out particulates, I use this. This ‘water scoop with pre-filter’ makes it extremely easy to collect water even from shallow streams — and will remove all visible particulates from your water.

I will never use a cloth bandana or paper coffee filter. I do not have the patience for “osmosis” to do its work. If you won’t have time for a gravity filter, I think you will find a cloth bandana quite suboptimal as well.