The ceramic only filter in the ceradyn lasts for years.
Do ceramic catadyne filters freeze.
But the charcoal filter needs to be changed every 6 months or you could build up some nastiness.
Make sure you backflush the filter with a lightly bleached water solution before you put it away and lube the filter gaskets to give it a long life.
It is a keeper.
High capacity ceramic filters can process over 1 500 gallons before requiring replacement.
The unique ceramic filter embedded with silver naturally destroys bacteria and protozoa.
In some cases you can get a mossy or fishy taste from some water sources.
The charcoal filter in the gravidyn makes the water taste better that s what s in your britta or other inexpensive filter.
The katadyn mini retails for under 100 and replacement filters cost approximately 50.
If the filter starts to become clogged yu can take it out and swirl it in the river for a temporary clean the current filter replacement cartridges fit the older model.
As part of katadyn s ultralight series the mini is designed to fit in a.
This activated carbon filter removed those off tastes.
In testing with neutral water the katadyn pocket microfilter would impart an off taste to the water presumably from the ceramic filter.