Geomancer
Hazard to Others
Posts: 228
Registered: 21-12-2003
Member Is Offline
Mood: No Mood
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pH Control
In order to live up to my new title as "Hazard to Others", I find myself having to maintain a divided cell at pH 6.8. Does anyone have a
special, cheap source for pH electrodes or meters? The things are everywhere, but more expensive than I expected. If I had an electrode, I think I
could make an amplifier for it, more or less. A full meter would be more convenient, though.
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Quantum
Hazard to Others
Posts: 300
Registered: 2-12-2003
Location: Nowhereville
Member Is Offline
Mood: Interested
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http://us.shop.com/cc.amos?main=catalog&pcd=8452940&adtg=040704
Its not the best thing in the world but it might work.
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unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
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Deep in the dim recesses of my mind I seem to remember an article in the "amateur scientist" column of scientific american that measured pH
using an antimony electrode or a quinhydrone electrode.
Failing that, try narrow range pH paper.
I checked, the Sci Am article is Sept 68 (Weird! I was 3 years old, How do I remeber that?)
has anyone got the resources (like a decent library) to get a copy?
[Edited on 12-4-2004 by unionised]
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