measuring pH of a solution

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javaguy - 07 Jul 2009 13:52 GMT

Hello,
I am trying to get advice on what device I can use to measure the pH
of a small amount of solution, e.g. 10 ml or less. I have looked
online and see various devices, e.g. pH electrodes. Would I simply
insert the tip into the solution and get a reading? I am a lay person,
not a pharmacist. Any recommendations/product recommendations greatly
appreciated!

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Salmon Egg - 07 Jul 2009 15:41 GMT

In article
<6c84d5b7-4ae9-4bff-a6a1-0e65b159ea00@d32g2000yqh.googlegroups.com>,

> Hello,
> I am trying to get advice on what device I can use to measure the pH
[quoted text clipped - 3 lines]
> not a pharmacist. Any recommendations/product recommendations greatly
> appreciated!

I am not an expert on the subject but am familiar with it. First of all,
the answer to your question will depend in part upon:

1. What range needs to be covered?
2. What accuracy is required?
3, The nature of the solution, How well is it buffered? Buffering is
used to prevent small amounts of contamination from affecting the pH
value.

The easiest method would be to use pH indicator paper. This comes in a
variety of ranges. A single drop of solution should be enough to make a
measurement.

Bill

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