Search found 514 matches

by macca
07 Dec 2021, 12:08
Forum: Safety with Chemicals
Topic: Bromine water
Replies: 20
Views: 5868

Re: Bromine water

Thanks Bigmack it sounds like a winner. I'll give it a go next years.
by macca
02 Dec 2021, 14:16
Forum: Chemistry and Labware - General
Topic: Mopping the ceiling, anyone?
Replies: 5
Views: 517

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...
by macca
30 Nov 2021, 11:01
Forum: Sourcing Materials & Eq Repairs
Topic: Gratnells glasses kits from MTA
Replies: 14
Views: 386

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.
by macca
25 Nov 2021, 08:21
Forum: Safety with Chemicals
Topic: Bromine water
Replies: 20
Views: 5868

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?
by macca
16 Nov 2021, 13:31
Forum: Recipes and Pracs
Topic: Dilution
Replies: 6
Views: 243

Re: Dilution

This is another one I use, even the different styles of graph paper are good

https://www.graphpad.com/quickcalcs/molarityform.cfm
by macca
15 Nov 2021, 08:48
Forum: Miscellaneous
Topic: Chair Damage
Replies: 18
Views: 687

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.
by macca
12 Nov 2021, 08:58
Forum: Miscellaneous
Topic: what weird/quirky things do your teachers ask of you?
Replies: 51
Views: 13302

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...
by macca
09 Nov 2021, 12:32
Forum: Chemistry and Labware - General
Topic: Safety data sheets
Replies: 2
Views: 291

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...
by macca
29 Oct 2021, 14:11
Forum: Miscellaneous
Topic: Chair Damage
Replies: 18
Views: 687

Re: Chair Damage

wow I wouldn't have thought it would be strong enough.
by macca
21 Oct 2021, 13:26
Forum: Chemistry and Labware - General
Topic: how do you identify classroom glassware
Replies: 12
Views: 889

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.
by macca
21 Oct 2021, 09:05
Forum: Chemistry and Labware - General
Topic: how do you identify classroom glassware
Replies: 12
Views: 889

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...
by macca
11 Oct 2021, 12:35
Forum: Miscellaneous
Topic: Policies
Replies: 11
Views: 3777

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...
by macca
11 Oct 2021, 09:48
Forum: Miscellaneous
Topic: Policies
Replies: 11
Views: 3777

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 apart flowers or ...
by macca
28 Jul 2021, 11:00
Forum: Recipes and Pracs
Topic: cobalt (II) chloride
Replies: 9
Views: 1325

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
by macca
27 Jul 2021, 12:41
Forum: Safety with Chemicals
Topic: Editing Risk assess labels
Replies: 5
Views: 1070

Re: Editing Risk assess labels

Just did this morning, RiskAssess custom label with "Unknown". Didn't have a problem, but don't edit them in Adobe DC Pro, just use as is.
by macca
11 May 2021, 13:13
Forum: Chemistry and Labware - General
Topic: Hexanoic Acid
Replies: 4
Views: 1129

Re: Hexanoic Acid

Thanks Alice

Can you PM me a rough price please? and I'll pass onto coordinator
by macca
11 May 2021, 11:07
Forum: Chemistry and Labware - General
Topic: Hexanoic Acid
Replies: 4
Views: 1129

Hexanoic Acid

Morning everyone,

Has anyone purchased Hexanoic Acid (Capronic Acid) recently? if so where? None of my usual suppliers stock it.

Thanks in advance
by macca
05 May 2021, 12:43
Forum: Chemistry and Labware - General
Topic: Flame Test
Replies: 7
Views: 1581

Re: Flame Test

Thanks everyone, Yeah wants to relate to solar system, but I've said no, she just wants to do a prac I think. So as a demo only, these kids are still having trouble lighting bunsens. They are never going to understand what, why or how to do the prac., but anyway. Teacher didn't want it referred to t...
by macca
05 May 2021, 11:10
Forum: Chemistry and Labware - General
Topic: Flame Test
Replies: 7
Views: 1581

Re: Flame Test

I have just had a look through several different Y7 textbooks that we have here and none of them mention flame tests. What Y7 textbook are you using? Even Y7 states of matter practicals don't cover flame tests. If push comes to shove then paddle pop sticks soaked in solutions. Keep the pretty flame...
by macca
04 May 2021, 14:51
Forum: Chemistry and Labware - General
Topic: Flame Test
Replies: 7
Views: 1581

Flame Test

Hi Brains Trust We normally do flame test with Yr9 +, question is I have a teacher wishing to do with Yr7. Do you do with year 7s? Do you do a simplified version if so what chemicals eg., Sodium Chloride. I can't even see what topic she would be relating too, unless she is jumping ahead to states of...