pH Universal Indicator

[Eelzor]

Does anyone have a link that displays a good clear shot of the colour it must be to be ph 7, or ph 7.2 etc? Because the colours that came with my pack were not very accurate and other sites I go to are different from mine as well, so im confused. Anyone know a link to a ph indicator table that is extremely accurate? Like maybe some science institution or something like that. And don't bother saying that it does not have to be perfectly on pH 7, becuase thats not the reason im searching for it.

 

[Lateral Line]

I'm afraid it's going to depend on the indicator. "Universal Indicator" is actually a mixture of several other indicators, Thymol Blue, Methyl Red, Bromothymol Blue and Phenolphthalein. The shades vary somwehat depending upon the mix, but generally the aim is to have a clear green colour at pH 7.

 

[Zak Ursulo]

I'm afraid it's going to depend on the indicator.

not to mention it will depend alot on your moniter setings..
everybodys computer moniter is different, so any "true color" indicators will be off by quite abit.

 

[Lateral Line]

>>> your moniter setings

Good point also.