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post #14 of (permalink) Old 12-05-2012, 04:42 AM
Darkblade48's Avatar
Join Date: Jan 2008
Location: Toronto/Singapore
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Originally Posted by biggerbang View Post
How much bromthymol blue would I need to add to the solution? I think I may have access to all of this in my pharmaceuticals lab.

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It doesn't matter how many drops you add. Add enough so that the colour is easy to see, but not so much that the solution is opaque.

4-5 drops is usually enough, as nilocg mentioned.


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