Search found 408 matches
- 12 Dec 2022, 14:30
- Forum: Chemistry and Labware - General
- Topic: White crystal around sodium hydroxide solution bottles
- Replies: 14
- Views: 8492
Re: White crystal around sodium hydroxide solution bottles
I still use glass ones as plastic will perish with things like vinegar. Most of the non caustic things seem to be alright in glass, and they are easier to keep clean. Tops free up with hot water. The white stuff around the caustic chemicals is caustic, so use PPE when you are cleaning it.
- 22 Nov 2022, 11:21
- Forum: Safety with Chemicals
- Topic: Experiment gone wrong
- Replies: 28
- Views: 9660
Re: Experiment gone wrong
Showed the prac on morning TV today! Seriously, how many random people will be out there doing it today?
- 21 Nov 2022, 13:41
- Forum: Announcements
- Topic: Banned from 1 NOV
- Replies: 43
- Views: 15232
Re: Banned from 1 NOV
So not Vic yet. Interestingly, who inspects your school to implement the fines if you do have banned plastics? And who pays the fine? I was quite pedantic in getting on top of banned chemicals years ago, the Art room was a bit dodgy, and I was told you just get a load of warnings as the Vic gov isn'...
- 07 Nov 2022, 14:41
- Forum: Chemistry and Labware - General
- Topic: 100ml dropper bottles
- Replies: 4
- Views: 3988
Re: 100ml dropper bottles
I still use them, I use a sturdy food storage container to store 6 x. I print labels off riskassess for the bottles and the container. I prefer the 50ml, the rubber teat/droppers do perish though. I get mine at the end of the year usually with budget remainder, or to flesh out an order. You can just...
- 07 Nov 2022, 09:38
- Forum: Chemistry and Labware - General
- Topic: pH Charts
- Replies: 25
- Views: 8528
Re: pH Charts
Thank you. I don't know Orange IV though. Will look it up.
- 11 Oct 2022, 12:26
- Forum: Miscellaneous
- Topic: equipment with cords
- Replies: 4
- Views: 4459
Re: equipment with cords
We got balances from Kogan, cheap, good and on batteries, good balances are left with their cords. Hotplates and power packs all use interchangable kettle cords, so I stack up the equipment and the cords are in a tub. I usually put the correct amount of cords with the apparatus on a trolley. The equ...
- 11 Oct 2022, 12:17
- Forum: Safety with Chemicals
- Topic: how do you order your Chemstore Groups ?
- Replies: 8
- Views: 4707
Re: how do you order your Chemstore Groups ?
Luckily I inherited a lab with all the chemicals stored in their DG groups, and in the old days in Vic, colour coded- (coloured stickers on each container), it was compulsory. I keep all the chemicals even diluted ones, (in class sets in little containers), in their category in alphabetical order.
- 12 Sep 2022, 11:37
- Forum: Recipes and Pracs
- Topic: biodiesel
- Replies: 0
- Views: 9290
biodiesel
I have a prac request which we are doing that was sent through from another school. It requires a hydroxide ethanol solution. I know it is potassium hydroxide, but then different pages have methanol and ethanol, so either can be used I think. So the teacher and myself are not sure what the hydroxide...
- 31 Aug 2022, 13:53
- Forum: Biology, Physics...
- Topic: waste from dissections
- Replies: 9
- Views: 5019
Re: waste from dissections
All the food scraps from the canteen etc go to the worm farms and chickens, apart from chicken bones I guess. I used to bin it but our bins aren't too feral these days. It seems like there should be a better solution.
- 31 Aug 2022, 13:23
- Forum: Biology, Physics...
- Topic: waste from dissections
- Replies: 9
- Views: 5019
waste from dissections
How do you all get rid of hearts, eyeballs etc after a dissection? I freeze all my waste but as our skips are collected monthly and I work part time, never sure how long the stuff is in the bins and if it will pong, or never breakdown in the tip if I wrap it with too much plastic etc. If it is ok fo...
- 31 Aug 2022, 13:12
- Forum: Sourcing Materials & Eq Repairs
- Topic: Instead of Matches.......
- Replies: 20
- Views: 12240
Re: Instead of Matches.......
They used to turn them up, but I haven't seen any for awhile so maybe they have changed.
- 31 Aug 2022, 13:09
- Forum: Safety with Chemicals
- Topic: Magnesium powder for yr 12 Chemistry: Riskasses
- Replies: 11
- Views: 7365
Re: Magnesium powder for yr 12 Chemistry: Riskasses
It becomes less explosive as it ages and absorbs moisture. I bet if I got rid of it a teacher would ask for it next week.
- 15 Aug 2022, 16:05
- Forum: Sourcing Materials & Eq Repairs
- Topic: Instead of Matches.......
- Replies: 20
- Views: 12240
Re: Instead of Matches.......
Matches. The yr 7's have no idea how to use them but I reckon lighters become flame throwers too easily. They will misuse them, (matches), worst I had was when they chucked them in the bin and caught the paper on fire.
- 15 Aug 2022, 13:42
- Forum: Recipes and Pracs
- Topic: Nail Biting
- Replies: 19
- Views: 6626
Re: Nail Biting
Get the jelly beans out of a bag with offal in it in front of the class. I tell the kids they dont eat in the science room due to contamination, and they believe me.
- 15 Aug 2022, 13:39
- Forum: Sourcing Materials & Eq Repairs
- Topic: Brains, hearts, kidneys & plucks
- Replies: 13
- Views: 8723
Re: Brains, hearts, kidneys & plucks
For the first time ever we have to do an order form for the abattoirs for eyes-$2 and brains $8, we get brains from the butcher or supermarket anyway, hearts, plucks and blood free from the abattoirs, and as we are a school they don't cut them much, usually.
- 18 Jul 2022, 14:01
- Forum: Biology, Physics...
- Topic: plants/microscopes
- Replies: 5
- Views: 4227
plants/microscopes
Best plants apart from onion for year 7's to look at? We will cut the plants for them, because yr 7's can't be trusted with sharp things these days.
- 18 Jul 2022, 13:51
- Forum: Announcements
- Topic: Welcome back everyone
- Replies: 10
- Views: 4797
Re: Welcome back everyone
Freezing in Gippsland. The teachers and students leave doors open.
- 08 Jun 2022, 15:20
- Forum: Sourcing Materials & Eq Repairs
- Topic: Microscope Service/Repairs
- Replies: 6
- Views: 6321
Re: Microscope Service/Repairs
There is tricky adjusting bit that refocuses your microscopes. It is just on the turret below the stage I think. I will check and get back to you.
- 08 Jun 2022, 15:16
- Forum: Safety with Chemicals
- Topic: Heating lead???
- Replies: 5
- Views: 4765
Re: Heating lead???
lead shot was used in triple arm balances to calibrate and lead is used in alloys, yr 11 metals.
- 18 May 2022, 14:49
- Forum: Safety with Chemicals
- Topic: STORAGE OF SODIUM METAL
- Replies: 19
- Views: 15903
Re: STORAGE OF SODIUM METAL
It goes bang but sometimes spits. Turns into concentrated sodium Hydroxide solution ........Like you need that splattering around the place .Glasses on Kids . :whistling2: Yes it does and years ago I had a teacher use it outside the fume hood. Spat onto the front row of desks, After he warned the k...