Q. How do I know your label claims are true?
A. We have independent lab tests using EPA protocols.

Q. How do I know which level of filtration I need?

• You can always play it safe and get the viral purifier. Although it costs twice as much, you get your investment back as it has 6 times the capacity as the biological filter.
• For traveling overseas, the viral purifier will give you a nice comfort level.
  
• If you use only tap water overseas and reasonably clean water in North America, the non-viral (biological) filter should be sufficient. Check with your local authorities as to the presence of viruses in the water.

Q. How will I know when the filter if full?
A. The flow of water will slow down. However; it will never fail. To prolong the life of the filter , it can be backwashed.

Q. Is this good for kids at camp?
A. Yes, it is easy. It is safe. It couldn't be more perfect!
How do I get water for a group of people?
▪ You can hook the inline filter to a gravity bag or the bottle filter can be used in a Nalgene® soft canteen and then water can be squeezed out for a group of people. If a faucet is available, then the faucet adapter can be used.
▪ An inline filter can be used with a pump filter if desired.If used as a pre-filter you not only increase the filtration levels but you'll never need to clean the pump filter.If the inline clogs it is easily backwashed by putting in after the pump for a few seconds (in a backwash position) and then returning it to the pre-filter position

Q. How come there is no EPA number on the box?
A. EPA registration is required only if iodine or chlorine are used.

Q. If I put the inline on my Camelbak®, can I take it off?
Yes, and the connector to put your hose back together is included with the filter.

Q. Can I put the filter in a different / smaller bottle?
A. As long as the bottle has a "Standard" 63 ml thread you can. You may need to trim the connecting hose to the proper length.

Q. How often should I clean the filter?
A. For longer filter life, you should backwash and sanitize the filter after every outing.

Q. If I backwash it, will the bacteria in the city water grow in the filter?
We recommend sanitizing the filter before storing it. If you backwash the filter and then use it, bacteria from the city water will not grow.

Q. Is it going to get clogged while I'm out on a trip?
A. Even with very high particulate /turbid water you should get 5 to 10 gallons through the filter. If this is not enough water for your trip you should either bring extra filters, or plan on field backwashing your filter.

If you have further questions, please feel free to contact John Smith our water specialist, at johntsmith@sawyer.com