Does it matter that the LARQ UV bottle only filters down to .5 microns
Dr F,
We usually want filters to be able to filter out down to .2 microns or smaller. If this is a UV bottle, does that matter?
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I’m also interested in any comments about the Grayl Ultrapress filter & purifier. I used it on a short trip to Ireland but it takes some effort to press the water through! Thank you, Linda