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cornsilk

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chartist10

Film on the top of coffee

When we make an instant coffee and it cools, you can see a visible film forming on the top. Is this something to do with the hard water area we are in or something else.. Oh and a solution would help....
12:23 Wed 20th Dec 20066 answers, last by cyclone 17:40 Thu 21st Dec 2006

Only 1 question