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Author: Subject: Is there aynywhere one could buy a reasonably small amount of Neon?
Junk_Enginerd
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[*] posted on 17-9-2021 at 00:29
Is there aynywhere one could buy a reasonably small amount of Neon?


I'd really like to acquire some Neon. I enjoy doing experiments with discharge lamps etc, and I have tried quite a few elements and substances, but nothing seems to be quite as unique as Neon in this context. Argon shares some of its qualities but it's got basically the same familiar emission color as ordinary air.

I've found a few sources of Neon, but it's all industrial sized. A 10 L 70 Bar bottle would last me 50 lifetimes lol, and it's prohibitively expensive. Considering the super tiny amount I'd need in a discharge lamp(probably <1 ml+a little waste), it's ridiculous to buy such a large amount.

There's also plenty of neon ampoules to buy, but those are already low pressure so I wouldn't be able to use it for anything...

Is anyone here aware of a source where a reasonably priced/sized canister of Neon can be bought? Wasn't Neon sign making an amateur hobby in at least some extent at some point? Feels like it should exist, but my google fu fails me and I find nothing.

[Edited on 17-9-2021 by Junk_Enginerd]
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fredsci93
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[*] posted on 17-9-2021 at 01:11


Lot's of places sell disposable cylinders, around $100 for 10 liters (https://www.ebay.com/itm/312653878000?hash=item48cb9f92f0:g:...)
(this one is Neon/argon but you get the idea)

I think you could find a smaller one if you look hard enough, but I haven’t looked much

[Edited on 17-9-2021 by fredsci93]

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[Edited on 9-18-2021 by Texium]
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Junk_Enginerd
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[*] posted on 17-9-2021 at 01:25


Haha, what you linked is the exact single one I found too. That's... not a lot of places.

I don't think Ar/Ne mix is a bad thing for my purposes. Afaik it's mixed with argon to give it better properties in for example discharge lamps, so it's really quite ideal.

I was hoping to find other sources in addition to this one, hopefully something cheaper and also not so expensive shipping.
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[*] posted on 17-9-2021 at 22:13


Have bought from these guys before:
http://prosites-llcwccd.homestead.com/NEON-GAS.html

It's 2.25 L of gas at 1 atm. You mostly need low pressures (I think 15-30 torr) for discharge tubes, so 2.25 L will make hundreds of tubes. You do need an apparatus to measure and add gas to your tubes.

Edit I see that you said you can't use low pressure ampules... In that case good luck. Almost all neon suppliers will sell small amounts in ampules for making discharge tubes. Larger amounts for research purposes will be in cylinders of >10 L. As far as what I've seen, the product you are looking for doesn't exist. You may have to bite the bullet and buy a lecture bottle for $600 =(

The upside of having a larger amount is that you may be able to fill at higher pressure (400-800 torr). This will allow you to make plasma tubes as well!

[Edited on 9-18-2021 by numos]
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Junk_Enginerd
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[*] posted on 17-9-2021 at 23:45


Cool, thanks. By low pressure ampoules I meant ampoules that are basically for element collectors, and already at the 15-30 torr range. I guess they're not really meant to be used other than excited to study emission spectrum. 1 atm at 2.25 L should be just fine!

Would you mind explaining the difference between a plasma tube and a discharge tube for this layman?
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