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- From: howardr@col.hp.com (Howard Rebel)
- Newsgroups: rec.aquaria,alt.aquaria,sci.aquaria
- Subject: Re: Electronic pH-detector
- Date: 26 Jan 1993 16:57:34 GMT
- Organization: HP Colorado Springs Division
- Lines: 28
- Message-ID: <1k3qhuINN42a@hp-col.col.hp.com>
- References: <1993Jan26.145758.18457@wega.rz.uni-ulm.de
- NNTP-Posting-Host: hplsdum.col.hp.com
-
- S_EBACH@rzmain.rz.uni-ulm.de (Ebach Bernd) writes:
- > I recently saw a posting about building a do-it-yourself-pH-detector.
- > Unfortunately this posting has been expired at our site.
- >
- > Could someone (preferably the original poster) mail me (or post) the
- > instruction plan of that thing?
- >
- > (eMail: s_ebach@main01.rz.uni-ulm.de OR s_wetterman@main02.rz.uni-ulm.de)
- >
- > TschauTschau
- > Bernd and Pierre
-
-
- The poster of the device plans was gb@dixie.cs.unc.edu (Gary Bishop).
- If Gary is not on the net at this time I would be happy to repost
- his plans.
-
- It was actually at CO2 content probe. Because the only changes the
- unit can detect are from gasses that cross the air bridge between
- the water in the detector and the water in the tank. Thus any pH
- change in the tank due to things other then gasses (such as CO2)
- will not be indicated by the device.
-
- I wish it were not so.
-
- --
- Howard Rebel hpcsos.col.hp.com
-
-