Search found 600 matches
- 10 Mar 2022, 14:15
- Forum: Chemistry and Labware - General
- Topic: Extracting oils
- Replies: 4
- Views: 3849
Re: Extracting oils
Thanks Bigmack, I was just thinking of you. I'm destressing by straigthening some wire around my chair "Electromagnets" so thank you for both suggestions. Yes I think it's pretty good too although I do think she is stretching it I'd say 1ml, the orange oil was the best. that was 500ml flas...
- 10 Mar 2022, 11:50
- Forum: Chemistry and Labware - General
- Topic: Extracting oils
- Replies: 4
- Views: 3849
Re: Extracting oils
Thanks Rowanne, I can't explain that they are not going to get large amounts of oil. Not listening and is continuing to keep trying different methods I think 1-2mls is pretty good. I feel like buying some esstential oils and adding to it! lol I don't know where she is getting the information now wan...
- 09 Mar 2022, 09:27
- Forum: Chemistry and Labware - General
- Topic: Extracting oils
- Replies: 4
- Views: 3849
Extracting oils
Hi,
I've been asked to ask the brains trust "Using ditillation to extract oils", from rosemary etc., what practical do you use?
I've been asked to ask the brains trust "Using ditillation to extract oils", from rosemary etc., what practical do you use?
- 04 Mar 2022, 11:15
- Forum: Sourcing Materials & Eq Repairs
- Topic: Wanting to purchase
- Replies: 15
- Views: 8788
Re: Wanting to purchase
Hi, it's FRIDAY!!!
Can anyone tell where I could purchase a 19/26 500ml short neck round bottom flask from? I've searched my normal suppliers with no luck.
Can anyone tell where I could purchase a 19/26 500ml short neck round bottom flask from? I've searched my normal suppliers with no luck.
- 09 Feb 2022, 08:48
- Forum: Chemistry and Labware - General
- Topic: Hot Equipment
- Replies: 4
- Views: 1078
Hot Equipment
Morning Brains Trust, How does everyone go about getting the kids to remove hot beakers full of liquid and tripods to put away? We generally let them cool for a few minutes while they are writing up results; then pack up. We have never had an accident. Does anyone use heat gloves? one stored at each...
- 07 Feb 2022, 14:13
- Forum: Miscellaneous
- Topic: Chair Damage
- Replies: 29
- Views: 10402
Re: Chair Damage
Oh no
Another Tik Tok one I was told about during the holidays was RAT tests. Kids in the US are using cranberry juice to draw a second line on tests to show parents so they can stay home. How do they think of these things.
Another Tik Tok one I was told about during the holidays was RAT tests. Kids in the US are using cranberry juice to draw a second line on tests to show parents so they can stay home. How do they think of these things.
- 07 Dec 2021, 12:08
- Forum: Safety with Chemicals
- Topic: Bromine water
- Replies: 22
- Views: 15472
Re: Bromine water
Thanks Bigmack it sounds like a winner. I'll give it a go next years.
- 02 Dec 2021, 14:16
- Forum: Chemistry and Labware - General
- Topic: Mopping the ceiling, anyone?
- Replies: 5
- Views: 1962
Re: Mopping the ceiling, anyone?
Back in the 80's I worked in a commercial lab (fruit Juice), I came back from lunch and the pressure cooker had been used to make plum jam (YUK MICRO PLATES) the lid was embedded in the ceiling with plum jam from A to B. The Chemist just looked at my and laughed gave me the afternoon off, the guy wh...
- 30 Nov 2021, 11:01
- Forum: Sourcing Materials & Eq Repairs
- Topic: Gratnells glasses kits from MTA
- Replies: 14
- Views: 2352
Re: Gratnells glasses kits from MTA
We got these a few years ago from Haines had them mounted on the wall. I glued strips of artificial suede on the inside. 30 spaces
Haven't had a problem.
Haven't had a problem.
- 25 Nov 2021, 08:21
- Forum: Safety with Chemicals
- Topic: Bromine water
- Replies: 22
- Views: 15472
Re: Bromine water
Hi Bigmack
That one is better than the one I have for Bromine in Situ. Does it hold it's colour or do you have to make up fresh each time?
That one is better than the one I have for Bromine in Situ. Does it hold it's colour or do you have to make up fresh each time?
- 16 Nov 2021, 13:31
- Forum: Recipes and Pracs
- Topic: Dilution
- Replies: 6
- Views: 3129
Re: Dilution
This is another one I use, even the different styles of graph paper are good
https://www.graphpad.com/quickcalcs/molarityform.cfm
https://www.graphpad.com/quickcalcs/molarityform.cfm
- 15 Nov 2021, 08:48
- Forum: Miscellaneous
- Topic: Chair Damage
- Replies: 29
- Views: 10402
Re: Chair Damage
Aparently another Tik Tok video of blocking toilets with boxes of tissues. Where do they get these ideas from. We are no longer handing out boxes of tissues.
- 12 Nov 2021, 08:58
- Forum: Miscellaneous
- Topic: what weird/quirky things do your teachers ask of you?
- Replies: 51
- Views: 25350
Re: what weird/quirky things do your teachers ask of you?
Morning Everyone, These Stile pracs are doing my head in! And I agree with Merilyn1 about food wastage. There are days when I ask myself are we science or are we food tech! Next week we are going into Oreo Moon Phases... I ask you, do we really need to supply so many Oreo biscuits that we buy the s...
- 09 Nov 2021, 12:32
- Forum: Chemistry and Labware - General
- Topic: Safety data sheets
- Replies: 10
- Views: 7804
Safety data sheets
Anyone else having trouble with Chemwatch, I put a mini SDS out with each practical as required. I'm just going through my Chemical Register trying to update any that are 5 years out of date. Most of the SDS I'm looking at haven't been updated on Chemwatch majority out by more than 5 years 6 month n...
- 29 Oct 2021, 14:11
- Forum: Miscellaneous
- Topic: Chair Damage
- Replies: 29
- Views: 10402
Re: Chair Damage
wow I wouldn't have thought it would be strong enough.
- 21 Oct 2021, 13:26
- Forum: Chemistry and Labware - General
- Topic: how do you identify classroom glassware
- Replies: 12
- Views: 2865
Re: how do you identify classroom glassware
marama
send in waste beakers marked with which chemicals, kids pour into there, then rinse. Anything that can't be comes back to me to clean up.
send in waste beakers marked with which chemicals, kids pour into there, then rinse. Anything that can't be comes back to me to clean up.
- 21 Oct 2021, 09:05
- Forum: Chemistry and Labware - General
- Topic: how do you identify classroom glassware
- Replies: 12
- Views: 2865
Re: how do you identify classroom glassware
Same, all glassware is in prep.room ordered with pracs through RiskAssess. Kids have to rinse free of residue before teacher returns to prep. room. 90% of pracs go out on trollies our prep. room is central to labs. Bunsen, tripod, gauze, heat mat, retort stand, boss head, clamp and test tube racks a...
- 11 Oct 2021, 12:35
- Forum: Miscellaneous
- Topic: Policies
- Replies: 15
- Views: 9910
Re: Policies
Thanks Merilyn I couldn't agree more, but you have given something else I hadn't thought of; Year 8 fine balance of ecosystems. Thanks It helps sometimes just to get another point of view. I'm sure they dream up some of these ideas without even thinking about how and why, just makes me out to be the...
- 11 Oct 2021, 09:48
- Forum: Miscellaneous
- Topic: Policies
- Replies: 15
- Views: 9910
Re: Policies
Hi, Brains trust a quick question "I would say NO". We have a teacher wanting year 7 to bring into school insects etc., to dissect in class. When we re-did the dissection policies we added yr7 & 8 were not to use scalpels due to the amount of accidents that have happened, they pull apa...
- 28 Jul 2021, 11:00
- Forum: Recipes and Pracs
- Topic: cobalt (II) chloride
- Replies: 9
- Views: 3007
Re: cobalt (II) chloride
4 gms in100 ml of water will do it. 4% cobalt (ll) Chloride is now 11-12 years. hope that helps