Talk:Disappearing rainbow indicator

Some European chemistry website copied it, so, it must be ok ;P. Austinian (talk) 20:59, 24 September 2009 (UTC)

Colours and meanings
What specific indicator is the list of colours and pHs for? There are several chemicals in this family, and they have different responses to different pHs. This table and its description need clarifying. I also suggest it be reformatted to show pH as the independent variable and colour as the dependent one. 199.212.11.12 (talk) 22:49, 22 February 2010 (UTC)