> >> apart from small issues such as  Giardia
> 
> > Iodine doesn't kill Giardia?  Or just not in the timeframe allowed
> > by this particular filter?
> 
> They say that Giardia is "resistant" to Iodine and has a 5 micron
> size. As the filter has a limited dwell time due to its suck through
> design it is probably less effective that something which allows eg 5
> minutes for Iodine action.

An internet fact sheet I looked up about Giardia suggests that
chemical treatments will take care of Giardia, if the directions
are precisely followed.

That suggests that this level of cursory contact with iodine would
be inadequate.

The flow rate looks REALLY low to me.  I think they quoted
100-150 ml/min, which is really just one or two good swigs of
water.  I think they'd do really well to come up with a siphon
kit or something, perhaps a bag-to-bag system that could be
filled and hung easily.

Mike H.

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