I still say that 20$ insurance. I replace one if I think it may have frozen.
I still say that 20$ insurance. I replace one if I think it may have frozen.
Thanks everybody
I got a new filter today
This is what I like about Hammock Forums
Lots of smart hammock campers
Good information
Happy New Year
Interesting article!
My sense of all of this is that water that is liquid isn't frozen and won't hurt the filter.
In general it seems water freezes close to freezing temp (homogenous nucleation) or with help from pressurized shock or additives/impurities in the water (heterogeneous nucleation if I'm following), etc.
But remember, water expands both as a gas and as a solid. It is that expansion that damages the filter. So if the water you use is liquid, it is not expanded and will not damage the filter unless you let the used and now wet filter get cold enough for the water molecules left behind in the filter to freeze. Or perhaps it if is simply so very cold that the liquid freezes AS it is passing through the filter, which means you're prolly better off melting snow for water and liquid water is scarce anyway.
So to keep it from freezing just keep the filter near body heat like in an inside pocket when not in use. When you use it on liquid water it should be fine, when you stop using it keep it warm, and following this practice should preserve its integrity.
I got a new filter
While camping this past weekend, I kept filter in pocket constantly when not in use Some mornings were below freezing
When I got home, backflushed forcefully with very warm water
And front flushed same way
And backflushed again with warm water
Then backflushed forcefully with air
And front flushed with air
Then backflushed with air
When air was used, quite a bit of water came out
I don’t use sanitizers, don’t like the smell of most of those products
Germs and molds grow best in moist environments Maybe by reducing available water, germ and mold growth is reduced
And I’m considering doing something along these lines with cold and filtered water while on camping trips
And doing final flushes with air in both directions, in hopes of reducing amount of water inside filter available to reduce chances of freeze damage due to expansion by water as it becomes ice inside filter All the while keeping it warm in my pocket while not in use
Your thoughts
Phantom good idea?
Or Phantom superstitious ideas not based on facts?
Or even further, I’ve now possibly damaged filter with my unproven ideas, and need to buy a third filter, and leave experimentation to the pros in more controlled environments and actual microscopic and other fact based testing
I ask because, there are some smart, capable minds here Thanks
Maybe final backflushing and front flushing with air could leave smaller amounts of water than normal and smaller amounts might freeze first, like frost on grass as opposed to a pond
There might be other ways2keep from freezing water filter
Maybe final filtering could be done with saltwater, salt fully mixed in water with no salt sitting on bottom—not sure of scientific description It might be less likely to freeze
Another way would be to run some vodka through filter as last step Vodka could sit in filter and resist freezing
If caught by Forest Rangers with vodka in a No Alcohol campground, you could say “ We are hammock campers, Would you join us4 coffee!
We will squirt this filter into our alcohol stoves and have you a mug of java in no time”
I like the sound of the "anti-freeze" idea, LOL. And it might just work!
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Mike
"Life is a Project!"
I have had excellent results over the years by just vigorously shaking after use to remove most of the water in the field
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I come to a different conclusion simply because I have seen a bottle of "liquid" water that remained liquid until someone slammed the bottle on a hard surface and it turned into a solid block of ice. So if it's 20* F outside and your bottle of water looks like it's in a liquid state, just slam it against a rock and it will turn into solid ice. And that's what is going through your Sawyer filter.
"A foolish consistency is the hobgoblin of little minds." Ralph Waldo Emerson
I’m late to the party;
The filter will still function but there could be cracks in the microfiber membrane inside the filter, rendering it less that fully functional.
There is no way to check to see if it still works, unless getting sick counts.
Personally, I’d get another filter. Consider this a good reason to replace the mini with the much less awful full size
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