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Thread: Liquid Nitrogen

  1. #1
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    Tuckasegee, NC
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    Default Liquid Nitrogen

    Anyone know how to get hands on liquid nitrogen
    thanks
    Devlin
    Devlin Wilde
    Zone 7a 2600 ft in WNC

  2. #2
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    Default Re: Liquid Nitrogen

    I've purcahsed it at a welding supply shop before.

    I'll bet praxair, or airgas could direct you to a local supplier

  3. #3
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    May 2011
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    Pensacola, FL
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    Default Re: Liquid Nitrogen

    Agreed. Both of my local gas suppliers (Airgas & Wesco) have liquid oxygen. I haven't asked about liquid nitrogen, but if I were looking for it they would be the first people I'd call.

    Brian
    Hobby Beekeeper - Second Year - Two Hives

  4. #4
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    Default Re: Liquid Nitrogen

    Our welding supply can get it, but you have to supply your own dewar (thermos).
    Go to Heaven for the climate, go to Hell for the company. -Mark Twain

  5. #5
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    Default Re: Liquid Nitrogen

    Quote Originally Posted by cg3 View Post
    Our welding supply can get it, but you have to supply your own dewar (thermos).

    Yup, I forgot about that part. I did have to bring my own dewar. I got mine off of ebay for something like 60 or 70 bucks.

  6. #6
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    Bourbonnais, Illinois, USA
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    Default Re: Liquid Nitrogen

    Sorry for my ignorance, but what is this used for? I would guess small hive beetles, wax moths, possibly mites, but I have never heard of this treatment. Seems an interesting option.

  7. #7
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    Rader, Greene County, Tennessee, USA
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    Default Re: Liquid Nitrogen

    > Sorry for my ignorance, but what is this used for?

    Search is your friend! The thread below is illustrated, too

    http://www.beesource.com/forums/show...ts-on-breeders
    Graham
    USDA Zone 7A Elevation 1400 ft

  8. #8
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    Default Re: Liquid Nitrogen

    Well, I used it for making ice cream.
    Go to Heaven for the climate, go to Hell for the company. -Mark Twain

  9. #9
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    Citrus County, Florida, United States
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    Default Re: Liquid Nitrogen

    @scoots40

    Used for brood kill to test hive for hygienic trait.

  10. #10
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    Default Re: Liquid Nitrogen

    I used it for quenching steel coming out of the forge. Some steels (52100 and 5160 particularly) respond well to very deep quenches and then tempering cycles. it wouldn;t have anything to do with beekeeping unless you wanted a very robust hive tool The stuff is incredibly cold , below -320deg F, so it will freeze most stuff pretty dang quick.

  11. #11
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    Whitleyville, tn USA
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    Default Re: Liquid Nitrogen

    Its also extreamly dangerious. Spill a litle of it on you, and you might be loosing a limb, or worse. Yes, its very usefull stuff, but, its also extreamly dangerious. No, I can't repeat that enough, its that dangerious. Err, its also used in cryo freezing things, including humans. Some studys have been done on freezing bees, and, actualy, be interesting to see if the fed has any good queens frozen and stored somewhere.

  12. #12
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    Default Re: Liquid Nitrogen

    Quote Originally Posted by KPeacock View Post
    I used it for quenching steel coming out of the forge. Some steels (52100 and 5160 particularly) respond well to very deep quenches and then tempering cycles. it wouldn;t have anything to do with beekeeping unless you wanted a very robust hive tool The stuff is incredibly cold , below -320deg F, so it will freeze most stuff pretty dang quick.

    Never used it on hot steel?? (oil or sodioum only) how does it react?

  13. #13
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    Default Re: Liquid Nitrogen

    Its actually very hard to hurt yourself with it. Back when I was in school we had a teacher who would pour it over volunteers hands as a demonstration. It has such a low boiling point that it flashes into nitrogen gas on contact with something as hot as skin and insulates itself from your skin. You have to immerse your hand into a body of it for some time to actually freeze yourself.

    Whats more dangerous is the substances that have been chilled with it. A metal tool for instances chilled to liquid nitrogen temps will instantly cause frostbite on contact since there is no liquid to boil into a protective gas.

  14. #14

    Default Re: Liquid Nitrogen

    We use it a lot to freeze brood to test them for hygenic traits. I started using it with gloves and safty glasses but now I just pour it in the can and put the frame back in the hive

  15. #15
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    Default Re: Liquid Nitrogen

    Quote Originally Posted by Aerindel View Post
    Its actually very hard to hurt yourself with it. Back when I was in school we had a teacher who would pour it over volunteers hands as a demonstration. It has such a low boiling point that it flashes into nitrogen gas on contact with something as hot as skin and insulates itself from your skin. You have to immerse your hand into a body of it for some time to actually freeze yourself.
    Tell that to the people who I burn skin lesions off of with it. I feels like a hot coal on your skin, and the spot dies and falls out in a couple of weeks. Please don't play with it at home.

  16. #16
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    Default Re: Liquid Nitrogen

    If your going to do a hygienic test where you kill the brood take a can of compressed air, the type used for cleaning keyboards, turn it upside down and spray the desired area for a few seconds. Don't get your hand in the spray or you'll get a freeze burn.
    "Of all God's creatures, only the honeybee improves its environment and preys on no other species."--Haydon Brown

  17. #17
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    Woodland, Alabama
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    Default Re: Liquid Nitrogen

    Sharpbees,

    Have you tried this? I used dry ice and did not get a complete brood kill. Liquid nitrogen is the only thing that I have used that is cold enough to consistently get the job done. The brood itself has to chill and die to get a true test.

    O'Quinn

  18. #18
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    Nehawka, Nebraska USA
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    Default Re: Liquid Nitrogen

    I get mine at the local welding place. Shop around for a dewar. Some are VERY expensive, but you can find some bargains too.
    Michael Bush bushfarms.com/bees.htm "Everything works if you let it." ThePracticalBeekeeper.com 40y 200h 37yTF

  19. #19
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    Default Re: Liquid Nitrogen

    It worked for me but I've only tried it once. I wasn't killing as large an large area though.
    "Of all God's creatures, only the honeybee improves its environment and preys on no other species."--Haydon Brown

  20. #20
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    Default Re: Liquid Nitrogen

    I think Aerindel was referring to the Leidenfrost effect. You can actually immerse your hand into liquid nitrogen BRIEFLY with no ill effects. Because of the low boiling point of LN there is a barrier of Nitrogen gas that protects the hand momentarily as the warmth of your hand boils the LN. I teach this concept to my physics students. Would I recommend the practice. NO! But it is a cool physics principal. Key words here guys! Briefly and momentarily. There will be a quiz on this tomorrow.
    "Someday we will look back and realize someone was right...and conveniently forget we were the ones that were wrong."

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