Australia's Science Forum

For some reason that link is not working for me, RosalieL. I would love to know what it is

Anna Z wrote: ↑28 May 2024, 11:33 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.

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.

Try a Haines search: Tubing Borosilicate Glass, 5mm x 0.5m pk/10 Thanks. Haines doesn't seem to have any with capillary size inner diameter. I think I want about 1mm internal diameter. Glass pasture pipettes would do the job, snap off the end bit :) Sorry to be difficult, but I can't really see how...

OK, thanks. I'll give that a go.

Hmmm, it doesn't seem to exist anywhere that I can find. I wonder where they got it from in the past

Anastasia wrote: ↑27 May 2024, 14:22 Try a Haines search:

Tubing Borosilicate Glass, 5mm x 0.5m pk/10

Thanks. Haines doesn't seem to have any with capillary size inner diameter. I think I want about 1mm internal diameter.

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 - g...

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!

Thanks both. We'll probably get that one too if it's decided we need a new one.

Does anyone have any feedback on the plastic one in the link above?

Thanks bigmack. I will try silicon grease. The teacher specifically asked for sodium sulfate rather than sulfuric acid because she doesn't like the acid leaking everywhere.

Thanks. The liquid is leaking out of the glass taps at the top. The bungs seem to be OK.

Hi, We are having trouble with our glass Hoffman voltameter leaking. It leaks the sodium sulfate solution from the taps at the top, but only slightly, and the gas escapes very quickly as the pressure builds up. Is there anything I can do to stop the leaking? It's like this one I think: https://www.t...

Marama T wrote: ↑06 Feb 2024, 10:36 Zinc oxide changes colour at around 8000 degrees Celsius, so if you can get that organised I'd be most impressed.

Hahaha!! Sorry, I didn't google any further than that it changes colour

I just googled and found that zinc oxide changes to yellow when hot (white when cool).

Wondering how this prac request went and did you make methyl orange? It is good to make analytical reagents/indicators. I have a great book which has recipes for universal indicators, however I would google the chemical's safety, before purchasing. If necessary I would look for an alternative prac,...

Labbie wrote: ↑26 Jul 2023, 17:34 No just your Chemical's unopened. Not Dulited, solutions. No needed.

Is this stated anywhere in CSIS so that I can show the HT? Previously the chemical register at this school has included dilutions, but it's not very complete, so I as hoping to just eliminate that part if possible. Thanks

RosalieL wrote: ↑11 Sep 2023, 12:27

elaruu wrote: ↑07 Sep 2023, 09:15Yes, 4 litres

Thanks! I've just ordered one

Yay! I haven't yet. Still waiting for approval. Did you add on the free gift?

Yes, 4 litres

I think it's 4L. I was just assuming because it looks the same. But it doesn't seem to mention it on the website. I will double check before ordering. I think it would be much handier to have the big 10L tank, but oh well.