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Subject: Re: Calibrated Thermometers



you are right, during phase transition period ,the temperature will
stay constant (in an isolated setup).
Use water/ice for 0C, thiosulfate (AR) for 48C, which will cover
your range.
You can try cheap digital thermometer too. Some of them come with sort
of zeroing and calibration (factory). Should be sufficient for color
photo. Alternatively, get a digital multimeter and Pt thermo probe.
Some inexpensive multimeters can measure temperature (with Pt100)
probe. Try Tandy or equivalent.


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