Australia's Science Forum

thanks so much Labbie.
I've been using Risk Assess for labels (it's so easy and quick), but as yet, it doesn't do mixtures, so I got a bit stumped.
I should have gone straight to ChemWatch myself.
Appreciate your attachment... saves me from locating it.

Kmd

Hi everyone,

does anyone know how to label Phenolphthalein Indicator, made as directed in 'The Laboratory' :

1g phenolphthalein
300 mL ethanol
200 mL dist water

Also stuck on how to label saturated solutions.


thanks for any ideas.

Rae, thanks for your suggestions too.
Kirin

wow, Graham, Thanks for the information. I've put it in a bucket of water (the saturated oxalic acid is in a 150 mL beaker, and crystalised), and have added a sprinkling of sodium carbonate. I have no idea how much oxalic acid I added, as I read that to make it saturated, you just keep adding. I sus...

I added sodium bicarb....... all that happened was lots of fizz, but the pH remained 4.0 (pink colour)

thanks for that. I'll give it a try.

Hi everyone,
I have made saturated oxalic acid (about 100mL )for a yr 11 experiment. The CSIS appendix D says it's ok to put it down the sink after making it pH: 8-10.
Could anyone please tell me which chemical I add, and how much?
Thanks heaps.
Kirin

I'm keen about the polo shirts.....
Could you please tell me what colour the shirts and the logo are?
thanks,
Kirin

I was just talking to my science teachers about Microscope service and cleaning this morning.
They said to search for one, so it can be included in next year's budget.

I used a large flat screen TV carton. Measured the width of the posters and cut. I cut the back out of the other side and slid it into the longest one. Glued it in place and painted it. A piece of flat steel on an angle goes in - holds about 80 A1 size posters. Larger ones go into a smaller flat sc...

The one way I have had success in unjamming blocked glassware like this is to soak it overnight or over the weekend in honey. Yes honey!! Robbie Hi Robbie, I remembered reading your comment about honey. Well, I came across the distillation equipment last week and noticed one of the plugs were stuck...

Hi there everyone, I'm also new to the Science Department. I'm employed as the Lab assistant, but have no prior science/chemical knowledge. I'm actually a primary school teacher, but found casual teaching not quite my 'cup of tea'. I applied for this job, got it, and started at the beginning of this...