[3dem] issues with liquid nitrogen tanks

[Zongli Li]

Hi Kristin,

You could use a high pressure LN2 tank (~220 psi) to pressurize the two
tanks that supply LN2 to microscope.

Best,

Zongli

On Tue, Jan 28, 2020 at 2:45 PM Parent, Kristin <kparent at msu.edu> wrote:

> Hello fellow 3dem-ers,
>
>
>
> We are experiencing quite an annoying situation with Airgas and I am
> wondering if other folks have had similar problems and what potential
> solutions are.
>
>
>
> We have a custom manifold from Chart to deliver liquid nitrogen to our
> Talos Arctica that can be equipped with two 240L tanks, each with 22 psi
> pressure. This should help reduce the LN2 waste and be more efficient, and
> when our tanks are good, it really is amazing. BUT, some of the time Airgas
> gives us tanks that we cannot use as the pressure never builds beyond 10
> psi and we have to return full tanks. They are not the nicest about this
> either ☹
>
>
>
> We know the manifold is working correctly, and that it is caused by
> individual bad tanks. Has anyone else had crappy tanks? Do people just buy
> their own tanks and have them refilled instead of swapped?
>
>
>
> Unfortunately, in Michigan Airgas is our only option, so any help would be
> appreciated.
>
>
>
> Thanks in advance,
>
> Kristin
>
>
>
> --
>
> Kristin N. Parent, PhD
>
> JK Billman, Jr., MD Endowed Research Professor
>
> Director, MSU Cryo-EM
>
> Associate Professor of Biochemistry and Microbiology
>
> Michigan State University
>
> 603 Wilson Rd
>
> East Lansing, MI 48824
>
> Phone: 517-432-8434
>
> https://kparentlab.natsci.msu.edu/
>
> Twitter: @Phage4Lyfe
>
>
> _______________________________________________
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> 3dem at ncmir.ucsd.edu
> https://mail.ncmir.ucsd.edu/mailman/listinfo/3dem
>
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