Aron et al:
I just bought a cheapo $30 temp (infra-red) meter that SEEMS competitive in
accuracy (they all need to be "calibrated," quite a lot, I understand, and
some pretty expensive instrumentation apparently can be tragically off under
different conditions, throwing a whole season's work into the dustbin--or
into a "model") with much more expensive units, but I've only had it a few
days and have not done any comparative tests. They all seem to be made in
China, and some may be from the same specs or even the same factory, as
appears to be the case with certain high-end microphones, for example, which
stack up pretty well with European-made top-of-the-line stuff costing in the
five-figure stratosphere. I would like to know how some of the cheaper pH
meters and other gear compare with the more expensive "brands."
Are you talking downloadable stuff or just the kind of toy I mentioned?
Application, of course, is everything, and if a physical probe is needed, my
toy wouldn't apply--whether or not it is useless, however, I can't say. I do
suspect, however, that a lot of "professional grade" stuff isn't that
different than some of the cheaper "consumer" stuff. I won't be using my
meter in the rain, but if I do, I'll put it into a plastic bag or something.
WT
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Thursday, June 04, 2009 1:33 PM
Subject: [ECOLOG-L] YSI versus Oakton probes
Our lab is looking to purchase a new portable pH probe for frequent,
routine, outdoor measurements. We require a meter that can take a probe
with a long extension chord (1 m or more). We would prefer something that
is waterproof or water resistant. So far, I have come up with a YSI pH
100 pH/ORP/Temperature meter and the Oakton Acorn pH 5 meter. Both fit
our needs perfectly, and I was wondering if anyone could provide reviews
for either product.
Alternatively, if you could suggest a better alternative for durable pH /
temp meter and probes, that would be great!
Thank you,
Aaron Stoler
--
University of Pittsburgh
Department of Biology
101 Clapp Hall
Pittsburgh PA 15260
410.365.7700 (cell)
412.624.4458 (office)
[email protected]
www.pitt.edu/~abs45/index.html
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