Apologies to Pete S on canals-list for this one:
We had a debate across both these lists awhile back about descaling
toilets, with the conclusion that strong organic acids such as citric
were the answer.
Since then, LeeSan have produced a descaling fluid which is basically
strong phosphoric acid, and I've been trying it for the last six months.
I have to say that it does the job, both for toilets and other places
where mineral deposits are unwelcome, such as kettles.
You are recommended to use it at 10 - 20% dilution, but I've just
used some neat on some stubborn scale on the base of my stainless
steel kettle, and it was remarkably fast (as in, slosh 20 ml or so
around gently and watch the scale dissolve.)
It claims to be biodegradable, which I guess it is, eventually; just
remember that your skin is certainly biodegradable under assault from
strong acid and wear rubber gloves and eye protection whilst handling
it (said it for you, Ron!)
All the best
Bruce
There are no strangers on the cut, only boaters we've yet to meet.
[Non-text portions of this message have been removed]
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