Australia's Science Forum

I agree Macca, there's one that gets the students to light a bunsen burner and then tilt it to burn a substance (flame test from memory)! I instantly banned it, who gets students to handle a lit bunsen burner???? when much safer and proven methods are available.
MariaC

Mine too Superbug, and a very stupid system it is in my opinion!

Hi Guys,

We have run out of ammonia testabs, No2 for testing ammonia in water. Can anyone point me in the right direction to purchase some of these? Ive tried the local petshop and poolshop with no success Cheers MariaC

I have quite a lot of pre-labelled spirit burners, multiples of some eg ethanol. After use I filter the remainder into appropriately labelled bottles which are stored in the flammable cupboard for next time. What little residue is left in the spirit burners is allowed to evaporate in the fume cupboa...

We do this prac every year, its also known as potassium ferricyanide, if they are doing corrosion as the option you may have to get some, lasts for ages , you dont need much! MariaC

The only thing is if they do it in year 8, its not new in yr 11, plus if all of year 8 do it that would be an extra cost, is it necessary? Just my thoughts. MariaC

Me too Rae, saves throwing and remaking!

We do it as a demo, student use would depend on the colour code dot for the sulfuric acid concentration used, greater than 10M teacher only, 4M to less than 10M year 11-12 so according to CSIS at that molarity ok but Id say at teachers discretion, they know their students.....and definately in a fum...

Hi I store acetic acid in the flammable cupboard, and nitric with the other acids in the corosives

My understanding is also that if it is not hazardous and used for purpose it was manufactured for eg washing up for dishwashing liquid it does not need a sds or to be listed, but if it is used for purpose other than original purpose eg PVA glue to make slime it does need to be listed and have a sds....

:giggle: Hi ours were done about two years ago, the things that work well are: burette sink in second prep room to soak and wash burettes, love it! glass splash backs in labs around work stations, students can write up notes, data as they are doing an experiment, the students love it!My storage is g...

And we passed registration last Tues, yay!

I agree with superbug, they are still stored under the older dangerous goods system. The new labels are for when the chemicals are actually in use. I attended the AIS Chemical Safety in Schools last week, and this issue had been one of my questions. Phillip Crisp (risk assess) gave the talk, and he ...

24/7 here as well!

We use a squirt ( very scientific) of 6M, but add it to the distilled water and stir BEFORE you add to voltameter! I was adding it to the receptacle area, and it wasn't producing any bubbles, but if mixed thoroughly in the water no problems!

:banghead2: Hi Guys, I did a practice run yesterday, got great froth and desired results at differing temp, pH and concentration of hydrogen peroxide but went to fine tune today and so much less froth, so does this mean the capsicum extract is a use on the day scenario? cos its for period 1, of cour...

Thanks guys for all the replies, we are going with bought catalase versus blended capsicum to see which gives us better results

Does anyone have such a thing??? sick of trying experiments that don't perform as expected

Hi, I was also wondering if we can get a copy of the talk on gene therapy given by the lady from CMRI, it was fantastic and my bio staff were very interested in the details?

Cheers MariaC

Hi Guys,

I used to get 20mls of Butyric Acid, now Serrata only supplies 100mls, does anyone know a supplier who still supplies smaller quanties? Cheers for any help,

Ta MariaC