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Topic: Observed reaction  (Read 1018 times)

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Offline Ihor

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Observed reaction
« on: March 12, 2021, 01:18:27 PM »
When I fill my used glass coffee pot with well water from my kitchen tap to wash it the water turns translucent black. What is the chemical reaction that causes this and what element/ compound is the cause?
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Offline rolnor

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Re: Observed reaction
« Reply #1 on: March 12, 2021, 02:37:08 PM »
I guess you mean something comming from coffe residues? Maybe tannines?
https://roastmeisterscoffee.wordpress.com/2012/02/03/are-there-tannins-in-coffee/
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