Regarding the BCU1, when working properly it's supposed to achieve a
temperature of -20 C at the coils. Depending on the probe, you're likely to
get a minimum sample temperature from a few degrees below 0 (I think the
best I ever managed was about -4 C) to a few degrees above.In general, I'd
expect to be able to get to freezing and consider anything below that a
nice bonus.
If one has been working well and especially over the summer won't cool as
much as expected, you could try thawing the coils. Turn off the VT,
disconnect from the probe, and put in flush for a few hours or overnight.
With a cryoprobe I'd try to schedule this for a time the probe will be warm.
Cheers,
Andrew
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Received on Fri Jun 20 2025 - 13:57:06 MST