nightjar nightjar@ wrote:
"The Natural Philosopher" wrote in message
...
nightjar nightjar@ wrote:
"Cicero" wrote in message
. uk...
"nightjar .uk.com" nightjar@insert my surname here wrote in message
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A kettle does not boil water long enough to disinfect it. Why not put
less
water in the kettle to begin with? If you do this regularly, you should
have
a fair idea of how much water you will need.

Colin Bignell


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Just to be clear.....

I assume that you mean a kettle with an automatic switch which switches
off
after a few seconds of boiling. Other non-automatic kettles can surely
boil for the 5 minute period mentioned by another poster.
Indeed, but non-electric kettles are very much in the minority and I
wonder whether one with an external heat source would have enough water
left to make a cup of coffee after filling the bowl, then boiling for
another five minutes.

Colin Bignell
Raising the water to 60 C kills about 95% of the bugs in seconds. Raising
it to 100C kills about 99.999% in about 5 seconds, and 99.99999% in 5
minutes.

As I said earlier, five minutes at boiling point is the minimum recommended
by the WHO guide to disinfection techniques.

If your immune system can't cope with the odd bug, you had better not go
outside at all.

A simplistic view, as water borne diseases are generally much more
infectious than those you will meet by simply walking outside.


No, they are exactly the same bugs in general.

They tend not to get in the guts as easily, nor have such a rich amount
of material to feed on, in your lungs and on your hands, thats all.

Colin Bignell