Advice on thermometer, IR preferred.

Looking to purchase a thermometer to check my solvent temps. I haven’t been able to find anything that can read down to -80c in an infrared platform.

What are you folks using?
Thanks!

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Got a friend who bought one of those will reach out to him and inquire more

Found this just now looking for an IR thermometer that goes that low. It’s not IR, but better than guessing after -50c. I think I might snag one of these soon given the price. Because I’m still guessing atm.
https://www.amazon.com/Thomas-Traceable-Low-Temperature-Ultra-Accurate-Thermometer/dp/B01JDE613I

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Do not use an IR thermometer for solvents. They work great for organic matter like food but they are not accurate for clear or reflective materials. Get an immersion thermometer.

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I use a k thermocouple digital meter. Was cheap and works good

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Everytime I look at your name I see Root Means Square :wink:

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Hmmm I don’t follow lol

As in RMS or quadratic mean?

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Yes I’m sort of a math nerd, although I’m not the greatest at it lol

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Good info, thanks for the advice. I really appreciate it!

You can look up thermocouple characteristics at Omega.com, the biggest US thermocouple outfit. Note that the working range for different TC types will differ…K type is great for temps near ambient, and is rated linear down to -200 °C, so cryogenic temps. Wikipedia has a good summary of the different types and potential limitations of their applications.

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