Glass tubing
Glass tubing
Hi everyone,
Just wondering where to source glass tubing from? Has anyone bought any recently? I'm specifically looking for capillary tubing. Long pieces that can be cut to various lengths.
Thanks!
Just wondering where to source glass tubing from? Has anyone bought any recently? I'm specifically looking for capillary tubing. Long pieces that can be cut to various lengths.
Thanks!
- Anna Z
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Re: Glass tubing
We use the glass pasture pipettes
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- Job Title: Laboratory technician
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Re: Glass tubing
We got some from Haines a while ago.
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Re: Glass tubing
Yeah, Haines, Science Supply Australia can help. There are also capillary tubing sets that come with capillary tubing with different internal diameters - all cut and ready to go with bungs.
I had a teacher show me once how to make very thin capillary tubing from glass pipettes. I ended up with more burns than tubes! She made it look so easy...
I had a teacher show me once how to make very thin capillary tubing from glass pipettes. I ended up with more burns than tubes! She made it look so easy...
Re: Glass tubing
Thanks all. I may be blind, but I can't seem to find any from Haines or Science Supply Australia.
I don't want the capillary tubing sets, just some capillary tube with one internal diameter. It's for several different uses, but specifically this time it is for a prac where they make thermometers - glass tube in conical flask with coloured water with rubber bung. Changing the temperature of the water makes the it go up and down in the tube. We had some glass tubing, so they have done the prac, but there wasn't enough, so I wanted to buy some more for next time.
I don't want the capillary tubing sets, just some capillary tube with one internal diameter. It's for several different uses, but specifically this time it is for a prac where they make thermometers - glass tube in conical flask with coloured water with rubber bung. Changing the temperature of the water makes the it go up and down in the tube. We had some glass tubing, so they have done the prac, but there wasn't enough, so I wanted to buy some more for next time.
- littltesttube
- Posts: 92
- Joined: 25 May 2012, 16:04
- State/Location: NSW
Re: Glass tubing
The last delivery here was from Seratta more than 6 years ago. I would try glass suppliers.
https://www.labdirect.com.au/glassware/straight-tubing/
https://www.labdirect.com.au/glassware/straight-tubing/
Re: Glass tubing
Try a Haines search:
Tubing Borosilicate Glass, 5mm x 0.5m pk/10
Tubing Borosilicate Glass, 5mm x 0.5m pk/10
Re: Glass tubing
Hmmm, it doesn't seem to exist anywhere that I can find. I wonder where they got it from in the past
Re: Glass tubing
Try emailing Haines sales, I emailed earlier today for a different query and they were quick to respond.
Re: Glass tubing
OK, thanks. I'll give that a go.
- Anna Z
- Posts: 262
- Joined: 16 Feb 2021, 14:39
- Job Title: Lab Manager
- School: DET Secondary School
- State/Location: VIC
Re: Glass tubing
Glass pasture pipettes would do the job, snap off the end bit
Re: Glass tubing
Sorry to be difficult, but I can't really see how they would work in this instance. They need to be about 25cm long, as the prac is to have ice water, measure the level of the coloured water in the tube, then increase the water by 50 degrees and mark the level. Then divide the difference by 5, so that each marking represents 10 degrees. Also they have to be able to tightly fit into a rubber bung, otherwise the pressure doesn't build up enough.
(when they did it recently one of them didn't work, and when I investigated it was because the hole in the bung was slightly too big, so it was a bit loose)
We have "just" enough for now (6 tubes of the right length), but I know they will ask for more in future, so I wanted to have some ready.
- Anna Z
- Posts: 262
- Joined: 16 Feb 2021, 14:39
- Job Title: Lab Manager
- School: DET Secondary School
- State/Location: VIC
Re: Glass tubing
Ahhh I see, we seal with blutak and would use a smaller temperature differential so I guess the shorter length works. Good idea sourcing more.
Re: Glass tubing
Thanks! Great idea with the blutak (sometimes the simplest solutions escape me! ). I'll suggest that for next time if I don't manage to find any.
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Re: Glass tubing
We use soda glass tubing not capillary, heat and stretch it then snap the middle, seal the fat bottom. I need more and struggling to find it too.elaruu wrote: ↑27 May 2024, 12:27 Thanks all. I may be blind, but I can't seem to find any from Haines or Science Supply Australia.
I don't want the capillary tubing sets, just some capillary tube with one internal diameter. It's for several different uses, but specifically this time it is for a prac where they make thermometers - glass tube in conical flask with coloured water with rubber bung. Changing the temperature of the water makes the it go up and down in the tube. We had some glass tubing, so they have done the prac, but there wasn't enough, so I wanted to buy some more for next time.
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- Posts: 514
- Joined: 28 Jan 2021, 13:24
- Job Title: Lab Assistant
- School: MCS
- State/Location: NSW
Re: Glass tubing
would something like this work? It's not capillary but still quite narrow and has the markings on it already. The 2ml ones are similar OD size to the other tubing. We have some capillary tubing here (a long length). It was purchased from Serrata which is now MTA before my time. I couldn't find it on the MTA site.
https://www.chemtalk.com.au/viewtopic.php?f=26&t=451/product/5 ... rological/
https://www.chemtalk.com.au/viewtopic.php?f=26&t=451/product/5 ... rological/
Re: Glass tubing
For some reason that link is not working for me, RosalieL. I would love to know what it is
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- Posts: 514
- Joined: 28 Jan 2021, 13:24
- Job Title: Lab Assistant
- School: MCS
- State/Location: NSW
Re: Glass tubing
Look up 2ml serological pipettes with your suppliers. I found some cheaper ones the other day but don't remember where (I can't open the link either). They come in plastic or glass.