Search found 415 matches
- 19 Feb 2024, 08:27
- Forum: Sourcing Materials & Eq Repairs
- Topic: lab furniture
- Replies: 3
- Views: 1224
lab furniture
I have done a search for lab refurbishments but most seem to be quite old. We have been given 2 weeks to come up with suggestions/requests for an upgrade to one of our labs to make it prac-only because our class sizes have increased but not quite enough to add extra classes. Currently our labs have ...
- 16 Feb 2024, 13:22
- Forum: Announcements
- Topic: Welcome back everyone
- Replies: 18
- Views: 3519
- 13 Feb 2024, 07:55
- Forum: Announcements
- Topic: Welcome back everyone
- Replies: 18
- Views: 3519
Re: Welcome back everyone
I was thinking this yesterday as well! Very quiet. Perhaps everyone has hit the ground running this year?
- 06 Feb 2024, 11:14
- Forum: Recipes and Pracs
- Topic: colour change when heated
- Replies: 7
- Views: 1162
Re: colour change when heated
I did some further googling after posting here (I had done a little bit before asking) and found that Iron (III) oxide turns black at before 500deg then back to reddish brown at room temp so I'm going to give that a go.... I can remember years ago Smiley brought it up (sometime between 2007 and 2013...
- 05 Feb 2024, 13:31
- Forum: Recipes and Pracs
- Topic: colour change when heated
- Replies: 7
- Views: 1162
colour change when heated
Hi everyone, I need your help! What is a compound that changes colour when heated but doesn't actually undergo a chemical reaction? It just changes colour and then as it cools it returns to the original colour. I'm having a mental blank. I haven't done this one for a few years and despite searching ...
- 30 Jan 2024, 12:01
- Forum: Recipes and Pracs
- Topic: making cell models
- Replies: 10
- Views: 4135
Re: making cell models
has anyone just made up a gelatine based jelly instead of jelly packets? would you bother flavouring it?
- 27 Nov 2023, 11:20
- Forum: Biology, Physics...
- Topic: Disposal of used agar plates
- Replies: 33
- Views: 16063
Re: Disposal of used agar plates
It's lumina which is an Aldi brand. I have worked out they've changed the brand name and some of the specs but managed to find a manual for a more recent model. It does not go up to the recommended psi but there's not much I can do about that! The first batch has just finished so when it has cooled ...
- 27 Nov 2023, 09:34
- Forum: Biology, Physics...
- Topic: Disposal of used agar plates
- Replies: 33
- Views: 16063
Re: Disposal of used agar plates
So the time has come for me to pressure cook the life out of the agar plates... I haven't done it since being at this school and it's been more than 10 years since I left my previous school... I had an old pressure cooker I used on the hotplate there and would just have it cooking away for a very lo...
- 20 Nov 2023, 14:11
- Forum: Biology, Physics...
- Topic: testing for microbes
- Replies: 4
- Views: 3872
Re: testing for microbes
Thank you! I had checked the Science ASSIST page but missed that bit. I must have looked at a different document (or tuned out as I was scrolling :coffee: :boring: oops!). I have one teacher who I am sure will want to do toilet doors/taps and who knows, maybe even the toilet itself so I want to have...
- 20 Nov 2023, 11:15
- Forum: Biology, Physics...
- Topic: testing for microbes
- Replies: 4
- Views: 3872
testing for microbes
OK so I know this has been discussed before but do you think I can find it??? (Is it really only Monday?) What are the current rules around kids swabbing surfaces to grow whatever microbes they manage to find? I know not to swab humans (or cough/sneeze onto plates), to use the parafilm to seal plate...
- 16 Nov 2023, 08:21
- Forum: Safety with Chemicals
- Topic: nickel sulfate
- Replies: 11
- Views: 11566
Re: nickel sulfate
We go by RiskAssess as well. CSIS hasn't been updated for decades, the Dept must be waiting for a legal case before they start?? It's bound to happen, one day, sadly. Had to laugh at this, but it isn't really a laughing matter! I went to a general WHS course run by AIS and, can you believe, they sa...
- 14 Nov 2023, 13:18
- Forum: Safety with Chemicals
- Topic: nickel sulfate
- Replies: 11
- Views: 11566
Re: nickel sulfate
Thanks Anna Z - This is the list from RiskAssess: "May cause cancer Suspected of causing genetic defects May damage the unborn child May be harmful if inhaled May be harmful if swallowed Causes damage to organs through prolonged or repeated exposure Causes mild skin irritation May cause allergy...
- 14 Nov 2023, 11:28
- Forum: Safety with Chemicals
- Topic: nickel sulfate
- Replies: 11
- Views: 11566
nickel sulfate
Do you still use nickel sulfate? I'm just printing out some new labels and according to risk assess the 0.1M is red! Is this correct? My very outdated original version of CSIS says 7-12. I am happy to go with the red dot but was just surprised and now I don't know if it is worth even having it in th...
- 09 Nov 2023, 13:19
- Forum: Chemistry and Labware - General
- Topic: Free elements sets for schools
- Replies: 30
- Views: 15555
Re: Free elements sets for schools
Ditto what Prima said! Mine just arrived today. I can't imagine how monotonous that must have been to put all the sets together but such a wonderful resource and I love that it is attached to the school only.
- 06 Nov 2023, 14:01
- Forum: Chemistry and Labware - General
- Topic: Free elements sets for schools
- Replies: 30
- Views: 15555
Re: Free elements sets for schools
Thanks Anna for sharing the info, too!Anna Z wrote: ↑02 Nov 2023, 07:16 Hi all, just thought thought I'd stick this on here https://elementsets.net/. they are so cool and free.
- 06 Nov 2023, 13:24
- Forum: Chemistry and Labware - General
- Topic: Free elements sets for schools
- Replies: 30
- Views: 15555
Re: Free elements sets for schools
Thank you, Stuart. The booklets look amazing! I love the teaching ideas as well. I can't wait to receive them. They will be so well loved by our students and teachers!
- 03 Nov 2023, 11:52
- Forum: Chemistry and Labware - General
- Topic: McCartney Bottles
- Replies: 2
- Views: 2839
McCartney Bottles
Hi have half an A4 copy paper box full of these with no lids. IMG_0216.jpeg Any suggestions for use? They haven’t been used in the nearly three years I’ve been here. If they’ve got a good use I’m happy to look at getting lids for them rather than disposing of them. My only thought so far is the rust...
- 02 Nov 2023, 09:50
- Forum: Recipes and Pracs
- Topic: split pea DNA
- Replies: 16
- Views: 16113
Re: split pea DNA
I couldn’t get chicken liver or lamb liver so I got a lamb kidney instead! Can you see any reason this wouldn’t work the same as the liver? It’s going in a blender and then filtered through a chux so the nephrons shouldn’t really create a problem, or would they? I am seriously doubting my brain at t...
- 02 Nov 2023, 09:47
- Forum: Chemistry and Labware - General
- Topic: Free elements sets for schools
- Replies: 30
- Views: 15555
Re: Free elements sets for schools
These look great!! Thank you for sharing! I hope I got my request in soon enough…
- 27 Oct 2023, 13:03
- Forum: Recipes and Pracs
- Topic: split pea DNA
- Replies: 16
- Views: 16113
Re: split pea DNA
I run with the idea that the senior students don't remember what they did in junior years. Once had a Bio class insist they had never used microscopes before! We just stick with strawberries. I buy frozen ones so they are on hand. We often do this prac out of strawberry season and the frozen ones a...