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LN2 Questions from a Beginner - Page 2

post #11 of 14
Quote:
Originally Posted by greed View Post

when handling cryo, gloves and masks are required. you just have to use the right gloves and know how to remove them when lhe or ln2 gets on them.
for our hobby its still smart to use gloves when transfering ln2 from a big dewar to a smaller dewar, the valve and transfer lines often goes subzero.


It greatly depends on the kind of gloves you're wearing.  When I work with this stuff in laboratories I use Cryo-Gloves and a face shield, but if you use almost any other type of glove it can be a real problem if you get any LN2 on your gloves.

 

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post #12 of 14
I fill mri systems with 250-2500L of Liquid Helium. We also use liquid nitrogen to cool down dry cryostats. We use gloves of course. smile.gif
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post #13 of 14
When dealing with a large dewar with a flex line, I usually put some type of insulation on the hose so it can be held with bare hands.
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post #14 of 14
Quote:
Originally Posted by xxbassplayerxx View Post

When dealing with a large dewar with a flex line, I usually put some type of insulation on the hose so it can be held with bare hands.


Yup.. did my 6-footer.. masking tape the whole thing.. then frost-king.. did one section about hand-width with 2-3 wraps extra... still gets pretty cold, I usually just hold a rag on it anyhow.. gotta have something to grab the shut-off valve with, dont want your hand sticking to it when you go to close it! 

 

*insulating the transfer hose makes less gas and more liquid too wink.gif

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