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Universal Indicator (pH 3-11)
Posted: 28 Jul 2016, 09:52
by Dominique.Barnard
Does anyone have a recipe for dilution of universal indicator?
Re: Universal Indicator (pH 3-11)
Posted: 28 Jul 2016, 10:00
by Merilyn1
Do you dilute the purchased one? Or use it as is? I'm curious now and am questioning my methodology!
Re: Universal Indicator (pH 3-11)
Posted: 28 Jul 2016, 12:30
by Lyn
If it is a purchased bottle of universal indicator then I have never diluted the contents. I have decanted into smaller dropper bottles for use in the classroom. I am not prepared to mess with the quality of the product.
What prac requires that the universal indicator needs to be diluted?
Re: Universal Indicator (pH 3-11)
Posted: 28 Jul 2016, 12:34
by melsid
We don't dilute the purcased one. Another Labbie here did, but the teachers ended up having to use more and it didn't save anything.
We just decant into dropper bottles.
Re: Universal Indicator (pH 3-11)
Posted: 05 Aug 2016, 12:10
by Merilyn1
Phew. Glad I've been doing the right thing!
Re: Universal Indicator (pH 3-11)
Posted: 05 Aug 2016, 12:37
by Labbie
Years ago about 1999 they use to have printed on the Universal indicator that it needed to be diluted. But then stopped printing it on their bottles.