Cryostat knives & temp control

From:Sylvia Poulos <>

Quick couple of questions for you all.  I've got a Hacker brite cryostat that was left unplugged for 4 months prior to it being moved.  Since the move, the temperature on the cooling block fluxuates quite a bit (from -40 to -20)...any idea what this may be from?

Secondly, I've got a bunch of knives from this cryostat that are in fairly bad shape...a few nicks and some have rust spots.  I don't need them because our old tech just bought new knives.  So, what do I do with them? =20

Sylvia Poulos
USDA-Animal Physiology

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