Australia's Science Forum

Finally got around to making some pH charts . I just couldn't find what I wanted on the net so made my own . Still got a few more to do , but thought I'd put them here if anyones interested . They were made using Photoshop,Paint and Word . I have included word files so if any of you want to customi...

yes make sure there is no headspace. You could pop the bottle under vacuum in a desiccator also after cooling to be super sure however probably not needed.

bigmack wrote: ↑25 Oct 2022, 08:55 Had to google Falcon tubes Anna. Thanks for the idea .

Pleasure

We also have one, print a heap of stuff for student projects. A few things we have printed for us test tube holders falcon tube holders sample vial holders electrophoresis trays holders for our exam privacy dividers Some animals for one of our display cabinets Student clubs trophies Cable holders/ti...

macca wrote: ↑09 Sep 2020, 09:34 Love my Westlab Equip. no breakage

Great idea.... like the home brew idea as well. Like others here, we have an abundance of glass tubing around the place for some reason..our crazy chem teachers come in bend stuff for us, I think they enjoy the lab time.

I'd be convincing the teachers not to use Cobalt Chloride anymore...or just don't purchase any more. We have removed all Cobalt offsite and it's amazing when you tell them that it is not available to them what interesting ideas they come up with.

We have our DG stuff all in cabinets and not really stored in Alphabetical order....I have discarded so much and only keep what I really need , my aim is to be able to do a stock take by opening the doors and standing there...no touching of chemicals is needed. I have all in trays/containers (bunds)...

For casual staff I use Alumni.... if they are studying in Science often a bit of part time work and cash works well for them. We have a past students Facebook page that I use to contact them.

I do make my rubber dropper assemblies last a bit longer by swapping the droppers over to solid caps when not being used. There are a few chemicals that get trotted out four times (for each class) once a year and sit, sulking away the rest of the time. Vinegar, acetic acid, nitrates and copper seem...

cactus155 wrote: ↑13 Sep 2022, 09:28 We are making wine in one of our classes starting tomorrow, however we cannot call it wine making so its become a fermentation experiment but using grapes and wine yeast and products I have purchased from the home brew shop

Ohhhhhh fun, that would be a great class.

Rowanne wrote: ↑23 Aug 2022, 10:14 we use this one

We also do a version of this one...spinach running next week.

My Goodness.... I only just threw out about 10 old bottles last week...gave them a squeeze, did not split or break but felt a little to firm... in the bin.

It's so much fun doing it with Primary kids. Our seniors are a little more switched on and don't get very excited

Opens for me.

If you really want to do that specific reaction...this guy does a good demo on Youtube....you should have all the stuff he talks about.

https://www.youtube.com/watch?v=tHJYA2y ... fChemistry

You could ask them if they have an Australian distributor, or if you have a good sales rep with one of the suppliers you use you could try harrassing them. Alternatively, you could do the traffic light prac. Colours go from Green, red, yellow to black and the keep changing the more you move the liqu...

it's never ending isn't it

@bigmack

They look excellent, with 2M being DG class 8, do you keep it stored with all the other concs ?. We have ours separated in a DG cabinet.

after reading this thread last year during lock down I was making red and blue bricks for showing warm and cold water convection currents coming together in a fish tank...awesome.

The bottle you normally buy is 35%...so if it's been open for a bit and not refrigerated it will no longer be 35% anyway. You could just give them what's in the bottle.

Otherwise (C1) (V1) = (C2) (V2)