Stuart Noble wrote:
wrote:
Norman Billingham wrote:

wrote in message
roups.com...

Hi

I plan to use HCl on a shower head - dont know what kind of plastic it
is though, makes it hard to look up whether it'll be happy with the
HCl. Any ideas?


If all you want to do is descale it then dilute (say 5%) HCl will not attack
any likely plastic, but keep it well away from any plated parts - it will
dissolve chromium or aluminium. On the other hand, kettle descaler wil also
work and is a lot safer.


I've always found citric pretty useless. At best it might get a thin
film off, I need to remove a goodly crust


Thanks,
NT

Sulphamic (as in Fernox descaler) is powerful but as easy to handle as
citric. IME the speed of descaling is not increased by acid strength.
Overnight in either acid works just as well.


HCl acid removal is instant, 1 second. I'm going to have to learn to
ignore you arent I.


NT