Australia's Science Forum

Sorry this is the thread that came up when I was searching for suggestions to unstick glass stoppers.

I have an old glass bottle with the glass stopper containing 1M ferrous sulphate. I am trying to dispose of the contents (very sludgy-looking) and I just cannot get it open. Is it worth persisting or just put the whole lot in the waste collection stockpile? It's only a 500ml bottle and only about ha...

After cleaning out the chemical cupboard, I have discovered we have bottles of barium nitrate labelled 1%, 0.5M, 1M and 0.1M. What would you keep? Just the 0.1M?

Fisher biotec, Sigma Aldrich, Gene Target Solutions all have the stain on their Australian websites but I don't know about the trial size.

I would be asking the teacher where he/she heard about it and if it's from a textbook or something see if there is a recommended supplier. That is a very specific request.

Any current recommendations for Bunsen burner suppliers?

elaruu wrote: ↑12 Sep 2023, 08:45

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?

Sure did!

What do you do with your bunsens when you unscrew them but the whole lot comes out? So the jet hole bit is still up the barrel instead of in the base? Is there a way to get these bits apart without destroying them or am I wasting my time trying?

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

Thanks! I've just ordered one

Is that 2L or 4L? Ours was all stored in 2L bottles that originally had Coles deionised water in them. I have been here over 2.5 years and the water is still good. I used to have a 20L distilled water drum at my old school that I just kept filling up. We had purchased it during the drought before in...

I had a 4L one at my previous school. I don't remember where I got it from but it worked really well and I don't remember changing the filters either! From memory, it did need a wipe out after each distillation as the base is where most of the gunk seemed to end up. I've just had a quick look online...

I feel like this is an "I should know this already" question, but what do you do with your empty concentrated acid bottles? I have 2x 32% HCl bottles (plastic) that the acid came in and I have decanted it into winchesters. I have rinsed and dried the bottles a few times. Do you just throw ...

I am not much of a botanist so I am hoping one of you can let me know what sort of seedlings I should buy for yr 7 students to make a terrarium! Have any of you done this? I did a search on here and didn't come up with anything. It's from Core Science 4.

Congratulations! That sounds like a very big and busy school to have 1x part time and 2x full time labbies! I can't even imagine it from my small school with a graduating yr12 class of 6 students!!

Oh my goodness!!! Are you all ok? That would have been such a fright! I hope the teacher and student teacher stuck around and helped with the clean up. So lucky no one was in the way of the plunger!

I just looked on YouTube and it's cool! They open and close. No idea what else would do this - good luck! Yeah it does look like fun. Our school is prep-12 so I've just asked the primary teachers if any of them have any pine cones stashed away in their store rooms for art/craft. The teacher said it...

A teacher wants to do a plant prac with placing one pinecone in water overnight and another in a warm, dry area overnight and then compare them. It is not pinecone season! I don't want to buy any... so do any of you have a recommendation for something else we could use that would offer the same/simi...

I ended up getting some from Mad About Science. They are being used in a prac exam in a couple of weeks so hopefully they will continue to use them for future years!

I wash and reuse zip lock bags all the time. Eventually they do have to go in the bin, sadly. Fortunately there are now some excellent compostable bags available. (Thankfully, my head teacher would never instruct me to not reuse something.) I find the regular ones don't even last the prac. Maybe ou...

Help! Does anyone know where I can get these from? The teacher asked me about them a few weeks ago and I completely forgot to look them up and now I can't find them in Australia! I'm slowly going through the suppliers I can think of but if anyone has seen them lately I'd love to hear about it! https...