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Old 03-08-2012, 02:46 AM   #215 (permalink)
Piwoslaw
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Join Date: Oct 2008
Location: Warsaw, Poland
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Svietlana II - '13 Peugeot 308SW e-HDI 6sp
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Quote:
Originally Posted by seifrob View Post
It's not affecting the metals, it seems it affects the minerals. If prevents to build the mineral crust you can find in pipes and boilers after long use. We call it "vodní kámen", which means "water stone", but my translator doesnt know correct english term.

Its that stuff that builds inside a glass or kettle when you use it for long time. Vinegar helps to remove it.
Seifrob, I know what you're talking about. It's called calcium carbonate, or more generally limescale, which contains calcium bicarbonate:
Quote:
Calcium bicarbonate is soluble in water, however at temperatures above 70 °C (158 °F) the soluble bicarbonate is converted to poorly-soluble carbonate, leading to deposits in places where water is heated. Local boiling “hot spots” can also occur when water is heated, resulting in the concentration and deposition of salts from the water.
I don't know how magnets would effect it, though
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