If you need a water purifier while you are out in the wilderness, Sportsmen's Warehouse Sales Associate Ken Combs has just the answer for you. "We have a couple of options as far as water purifier pumps and micro filters. The difference between purifiers and micro filters is that micro filters will get everything except for viruses and purifiers will get all your viruses... It will get salmonella, E. coli, Giardia, crypto. You can also add tablets which will take you the extra mile. Most pumps you find out there today will be micro filters but you do have that extra step of the tablets If you want to go that extra mile. What about pricing? They run from $75-$95. Tablets are $14.95 for 30 tablets.