Quote:
Originally Posted by grizzly7
Hiya
I really don't get this during regular use at least? One side is clean the other side isn't. If no bugs pass through the medium what is there to grow on the clean side? So why does it need cleaning other than (dirty side only) to maintain through-flow efficiency?
Milton at 1 tablet to 4.5l to sterilise screws up many bottles and tanks if not made of a suitable plastic, maybe metals too. Milton used to maintain water quality at 1 tablet per 100 litres at their recommendation has been fine in our campers plastic tank for long term use. Same I'd imagine just using household bleach, the concentration many organisations quote for adding to maintain drinking water will be a long way from the strength that gets squirted under the loo rim!

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The problem with the bacteria in the filter is most likely to occur with back contamination from your saliva on the mouthpiece. This is specifically warned about in the operating instructions for my Lifesaver UF4000. Contamination then spreads to the charcoal filter where a bacterial colony can develop and possible then onto the main cartridge filter.
The operating instructions specifically state you should sterilise the complete filter with a mild sterilising solution like 3ml Milton added to 1.0 litre of clean tap water (or equivalent sterilising solution) and soak for one hour, then invert for a further one hour. Drain and flush with clean water.
Obviously this applies to the Lifesaver UF4000 and you will have to refer to the specific operating instructions for other makes/types of filter.
Grey Beard
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