Aqueous Temperaturing Measuring Techniques

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#4511

From: Mike Hodges
Date: Tue, 21 Feb 1995 14:10

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Dear All,

I am investigating methods that can be used to measure the 
temparature of liquid-containing cells in medical instruments, 
especially those involving temperature sensitive liquid-indicators.

The requirement is to be able to *indirectly* measure absolute
temperatures down to +/- 0.1degC between 35 and 40degC.  I have a
paper published in Clinical Chemistry in 1976 which uses Tris as the
temperature sensitive medium and cresol red as the indicator 
resulting in an absorption change with temperature, but I don't think 
that it will be sensitive or accurate enough.

Does anyone have any further info in this (or any other thermal
measuring technique that might be applicable)?  Unfortunately,
thermal imaging is out due to space and and direct measuring
techniques such as thermocouples will be in practical.

--------------------------------------------

Mike Hodges                                   meh@wilj.itl.co.uk
Wilj International Ltd
Ashford  Kent
UK.

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From: meh@wilj.itl.co.uk (Mike Hodges)
Subject: Aqueous Temperaturing Measuring Techniques
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Date: Tue, 21 Feb 1995 14:10:15 GMT