Survival filter rated at 100,000 gallons: https://sawyer.com/products/mini-filter/
House filter rated at 150 gallons(and this is longer than most): https://www.epicwaterfilters.com/products/epic-pure-water-filter-pitcher
In: Chemistry
From my personal experience with similar filters of each type, it is due to the survival filters being able to be cleaned. The survival filters clog up after about 10-20L of lake/river water being put through. After they clog they can be cleaned, either with water or chemically. House filters, on the other hand, are much more complicated and generally can not be easily cleaned thus they basically last longer but are one use.
Also survival filters are usually more expensive.
They’re filtering different things.
– The survival filter is to filter out bacteria.
– The house filter is to filter out substances.
– (To illustrate the point) a sieve is to filter out large rocks and debris.
This means they are made very differently and break at different rates. Contrast with a sieve, which will have a much higher rating than even the survival filter.
That particular survival filter only removes macromolecules such as bacteria and larger objects. Something *will* clog it before 100,000 gallons at which point you’ll run some water through it backwards to remove the clog as well as many of the caught particles.
The particular house filter removes fully dissolved chemicals. This can only be done by bringing all the water into contact with a different, reactive chemical. When a particular part of the *extremely large* surface area of the reactive chemical reacts with a chemical you want removed, that part of the surface can no longer be “unclogged” by running water backwards.
Thanks guys those were some very helpful and informative answers!
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