Some of you might be aware of my use of “Diet” Cola for cleaning parts and keying bare metal – but at 0.5% phosphoric acid it’s a bit weak. As I work in the water treatment industry I can usually get hold of 20% Orthophosphoric acid but at the moment it’s in short supply.
I’ve just Googled around and come up with “Milkstone Remover” and found a local farm supplier that stocks it – 5 litres for £9.00 or $18.00 in US speak (I assume as with everything else it’s cheaper Stateside). It seems this stuff is between 30 – 60% Phosphoric acid and is readily available. It’s used to clear limescale from milking machines by the looks of it. I’ll let you all know how it works.
Phil
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