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Gas syringes

Posted: 19 Jul 2021, 14:51
by RosalieL
How can you tell if the syringes are too “sticky” for measuring gas? Do you have some that are used for gas only or are your syringes all together? I have found the plastic ones here and I am worried the gas from the experiment won’t have enough pressure to move them. I don’t really have time to try the experiment on all of the syringes. Apparently we also have some glass ones but they haven’t shown up after a quick search. I will have a better look later.

Re: Gas syringes

Posted: 03 Aug 2021, 11:18
by mtg
I use the glass ones, clamp a hose on the end so the gas doesn't escape. To get rid of it bubble it out under water.

Re: Gas syringes

Posted: 05 Aug 2021, 09:09
by RosalieL
mtg wrote: 03 Aug 2021, 11:18 I use the glass ones, clamp a hose on the end so the gas doesn't escape. To get rid of it bubble it out under water.
I did end up finding the glass ones and I showed the teacher and he said “I’m not letting my kids have those!” :cheesy: At least he knows his class!! We ended up using the plastic ones but they weren’t great. I think next year we will do it into a measuring cylinder upside down filled with water. I’m pretty sure that’s what my old school did years ago.

Re: Gas syringes

Posted: 17 Feb 2022, 13:43
by RosalieL
Revisiting this thread - do you use Vaseline or anything on the glass gas syringes?

Re: Gas syringes

Posted: 17 Feb 2022, 17:57
by Anna Z
We use morning fresh on our gas syringes...just a little. Works a treat, better than having Vaseline or silicon grease all over them.

Re: Gas syringes

Posted: 18 Feb 2022, 09:42
by RosalieL
That’s a great idea! I will do that next time :)

Re: Gas syringes

Posted: 18 Feb 2022, 13:10
by cactus155
Thanks Anna Z for that awesome suggestion as well