Search found 427 matches
- 18 Mar 2024, 11:15
- Forum: Biology, Physics...
- Topic: frozen hearts - help!
- Replies: 10
- Views: 9070
Re: frozen hearts - help!
How did they go today ? It went well. One teacher didn't want the pluck yet so I'm hoping it's still ok when he decides to look at it. Everything finished defrosting enough in the fridge overnight. I will be asking if I can get them fresh next time I order. Individually packaged sounds much more co...
- 18 Mar 2024, 11:08
- Forum: Sourcing Materials & Eq Repairs
- Topic: Rubens Tube
- Replies: 3
- Views: 2803
Re: Rubens Tube
I haven't purchased one, but cider house tech has them on their website.
- 15 Mar 2024, 09:10
- Forum: Biology, Physics...
- Topic: frozen hearts - help!
- Replies: 10
- Views: 9070
Re: frozen hearts - help!
I will know for next time - thank you! The place I got them from gave them to me already frozen and smooshed together in a big bag. I defrosted them enough to separate into 2 class sets and then refroze so my concern was more the smell than the safety for eating. The last time we did this was how I ...
- 14 Mar 2024, 13:35
- Forum: Biology, Physics...
- Topic: frozen hearts - help!
- Replies: 10
- Views: 9070
frozen hearts - help!
I have hearts (x16) and plucks (x2) that were frozen. I took them out at about 8:45am and at 2:30pm they still have ice on them! They are needed at 11am tomorrow. Is it too risky leaving them in my sink overnight? I was planning to put them in the fridge when I leave this afternoon... but I am worri...
- 11 Mar 2024, 09:08
- Forum: Safety with Chemicals
- Topic: Standard Operating Procedure (SOP) for removal of chemicals
- Replies: 10
- Views: 5038
Re: Standard Operating Procedure (SOP) for removal of chemicals
:cheesy: Ah yes... "sensible"... At my old school I discovered a broken mercury thermometer in one of my prep room drawers. I don't know how long it had been there and how long the little balls of mercury had been rolling around! I also had a not-at-all-sensible teacher (again, at my old s...
- 11 Mar 2024, 08:43
- Forum: Chemistry and Labware - General
- Topic: Free elements sets for schools
- Replies: 30
- Views: 19801
Re: Free elements sets for schools
That looks really good, macca!
Ours are still in their box. We don't have enough wall space to display them at this stage, but... "when we get new labs..." ...I will make sure they are up for all to see!
Ours are still in their box. We don't have enough wall space to display them at this stage, but... "when we get new labs..." ...I will make sure they are up for all to see!
- 07 Mar 2024, 14:17
- Forum: Safety with Chemicals
- Topic: Standard Operating Procedure (SOP) for removal of chemicals
- Replies: 10
- Views: 5038
Re: Standard Operating Procedure (SOP) for removal of chemicals
I haven't heard anything about Mercury being banned from schools? The old thermometers have been for years. We still have a sample inside a small glass container sealed inside another labeled container for viewing only kids are allowed to feel the total weight of the container. RiskAssess still has...
- 07 Mar 2024, 11:49
- Forum: Safety with Chemicals
- Topic: Standard Operating Procedure (SOP) for removal of chemicals
- Replies: 10
- Views: 5038
Re: Standard Operating Procedure (SOP) for removal of chemicals
Is this an official thing? I haven't seen anything about it.labbiejess wrote: ↑07 Mar 2024, 10:36
With regards to having mercury banned from schools since last year sometime is there a particular time that it needs to be removed from the premises? Where would I get this information from?
- 05 Mar 2024, 11:38
- Forum: Recipes and Pracs
- Topic: Limewater
- Replies: 48
- Views: 29368
Re: Limewater
I'm trying to set up my lime water still... Does anyone know what size rubber bung with 2 holes fits in the top of a winchester? I have ones that are too big or two small. I did find a cork one that fits (no holes) but none of the measurements match any of the 2 hole rubber bung options I've found ...
- 05 Mar 2024, 09:30
- Forum: Recipes and Pracs
- Topic: Limewater
- Replies: 48
- Views: 29368
Re: Limewater
I'm trying to set up my lime water still... Does anyone know what size rubber bung with 2 holes fits in the top of a winchester? I have ones that are too big or two small. I did find a cork one that fits (no holes) but none of the measurements match any of the 2 hole rubber bung options I've found o...
- 04 Mar 2024, 08:13
- Forum: Biology, Physics...
- Topic: rat dissection
- Replies: 23
- Views: 16712
Re: rat dissection
Where do you get your rats from these days? I got some frozen ones from raticoolreptile@hotmail.com a couple of years ago but haven't had a response to my email this year. Does anyone know if they are still in business?
- 23 Feb 2024, 11:18
- Forum: Sourcing Materials & Eq Repairs
- Topic: lab furniture
- Replies: 3
- Views: 3091
Re: lab furniture
We are in conversation with westlab now. I wondered if there were other suppliers but they seem to be the only ones! What they have looks good so hopefully the school will agree to spend some $$...
- 19 Feb 2024, 08:27
- Forum: Sourcing Materials & Eq Repairs
- Topic: lab furniture
- Replies: 3
- Views: 3091
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: 7345
- 13 Feb 2024, 07:55
- Forum: Announcements
- Topic: Welcome back everyone
- Replies: 18
- Views: 7345
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: 3092
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: 3092
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: 6003
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: 19349
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: 19349
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...