Where can you buy a cheap liquid nitrogen dewar?

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Discussion Overview

The discussion revolves around finding a cost-effective Dewar or vacuum flask suitable for storing liquid nitrogen, specifically under a budget of $50. Participants explore recommendations for purchase locations, considerations regarding size and usage, and the implications of working with liquid nitrogen and superconductors.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant seeks recommendations for purchasing a Dewar for liquid nitrogen under $50.
  • Another participant asks for clarification on the size, location for obtaining liquid nitrogen, and intended use.
  • A suggestion is made to consult the supplier of liquid nitrogen regarding the suitability of the Dewar for filling.
  • Multiple participants express interest in using the Dewar for cooling superconductors.
  • Concerns are raised about the lack of experience with cryogenics, emphasizing the need for supervision when handling potentially dangerous materials.
  • A later reply advises seeking local educational institutions for guidance on cryogenic setups.

Areas of Agreement / Disagreement

Participants express a range of views on the feasibility of purchasing a Dewar within the specified budget, with some noting that the cheapest options exceed this price. There is a consensus on the importance of having experience or supervision when working with liquid nitrogen, but no agreement on specific purchasing recommendations.

Contextual Notes

Participants do not provide specific details on the types or sizes of Dewars available, nor do they clarify the conditions under which liquid nitrogen can be safely handled. The discussion reflects uncertainty regarding the availability and suitability of Dewars for the intended use.

chasbissell
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I want to find a Dewar or vacuum flask for liquid nitrogen under $50. Does anyone have any recommendations where to buy one?
 
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chasbissell said:
I want to find a Dewar or vacuum flask for liquid nitrogen under $50. Does anyone have any recommendations where to buy one?
What size? Where are you going to get the liquid Nitrogen? What country / state are you in? What are you going to use the liquid Nitrogen for?
 
I would ask whoever is supplying the liquid nitrogen. They may be reluctant to fill your dewar unless they are happy with it. Cheapest I could see on ebay is double your price target.
 
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I wpuld like to cool down a super conducter
 
chasbissell said:
I wpuld like to cool down a super conducter
What is your level of experience working with cryogenics? What are you planning on doing with the superconductor?
 
I really have no experience, just want to play with it.
 
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chasbissell said:
I really have no experience, just want to play with it.
Then we cannot help you. An anonymous internet forum is no substitute for supervision by someone who knows what they're doing, so we can't help you with this potentially dangerous project. Please find someone near you who can help you with this. Perhaps check out the local community colleges, for example, to see if they have any cryogenic setups in their labs that you could learn from.

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