In article ,
tim... wrote:
Citric acid has long been on my list of items that I want in my cupboard
as cheap generic scale remover, because I don't like the smell of
vinegar

but I have never (since about 1970) seen anywhere openly selling it,

I recently bought it from Ebay in powder form for the purpose of cleaning
out the heater matrix on the old car, having been told it's the safest way.

Not sure it is food grade, though.

--
*I went to school to become a wit, only got halfway through.

Dave Plowman London SW
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