Bert, drop the ceramic filter and it will crack, you won't be able to see it, but it's like the M6 to viruses. Don't believe the bull from manufactures, they have been tested by numerous independent bodies, and the results are not favourable.
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Bimble...
Independant bodies.....same as ' afriend of a friend of a friend reckons that....probably people flying a desk no doubt...:yelrotflm
I've had mine a long time and carried it over 58,000 miles in my bike panniers, often off-road. Only one cartridge change in 6 years due to wear-(cleaning maintenance) Never a single crack- I also changed two 'O' rings in that time too and that is it. Never fell ill once. I think that says it all don't you think?
I used it in brackish water, roadside puddles, holes I dug and water seeped in, Africa, Cambodia, Thailand etc etc and it has saved my bacon many a time.
Commercial hype? no Sir- a solid, well built professional piece of Swiss made equipment -(also issued to NGO's worldwide).
Good kit and one I well tested and trust out there.
Katadyn filter as linked to above
* 0.2 micron cleanable silver impregnated ceramic filter.
* 50,000 Ltr Filter life
* 1 Ltr/min flow rate
* 20 year warranty
Thew Pre-Mac MWP has a replaceable cartridge that will only treat up to 200 litres
No guarantees
It's a no-brainer!