[neilep (OP)]

Dearest People With Degrees in Sinkology,


See this sink ?





A Sink Picture Seen By You Just Now.


yeuuuchhh !!!!  What's with the brown stain ?


What causes this ? something in the air ?  a major miscalculation by a desperate intoxicated crapulent ?




I'd be interested to know !.. Because, well, I don't know do i ?






Thank ewe




Brown Stain Sink Enquirer

[Bill S]

No degree in sinkology, I'm afraid, but one question that comes to mind is: What is the concentration of CaCo₃ in the water in the area into which this sink ventured?  A thin film of limescale will accentuate any coffee/tea/almost anything stains.  BC will probably give you a better answer; I'm just a hitch-hiker living in a "hard water" area.

[neilep (OP)]

No degree in sinkology, I'm afraid, but one question that comes to mind is: What is the concentration of CaCo₃ in the water in the area into which this sink ventured?  A thin film of limescale will accentuate any coffee/tea/almost anything stains.  BC will probably give you a better answer; I'm just a hitch-hiker living in a "hard water" area.

I have tough water too !!...it's well hard !....*googling "brown sink stains" evacuates a whole plethora of images excreted from the anal results of internet search engines.




*Other search engines that ewe can add "ing" too are also available from all good Internet sites.

[Bored chemist]

Limescale is a fairly good bet. Possibly with a side order of iron or humic acid as a brown colour.