Search found 582 matches

by Lyn
21 Mar 2018, 11:04
Forum: Sourcing Materials & Eq Repairs
Topic: Sulphur chunks
Replies: 3
Views: 2567

Re: Sulphur chunks

Just do a search for sulphur roll on this site. There are hints for making your own roll or buying it in from suppliers. ChemSupply is currently $104 for a kilo. That would probably see your science dept through to the next century, maybe :D . Other science suppliers may come in cheaper. Have a look.
by Lyn
08 Feb 2018, 16:23
Forum: Announcements
Topic: Goodbye - it's been a journey
Replies: 13
Views: 9155

Re: Goodbye - it's been a journey

Just because you are going to do different things doesn't mean you can't pop in occasionally and say hello. Best wishes and feel free to check in on us.
by Lyn
24 Nov 2017, 10:28
Forum: Chemistry and Labware - General
Topic: Lighting Bunsens
Replies: 31
Views: 15271

Re: Lighting Bunsens

I have six matches to a box and give the teacher a ziplock bag (snacksize) with loose matches just in case the kids decide they want to be pyromaniacs. It's then up to the teacher to keep check on what is used. My biggest bugbear with matches is that kids think an empty matchbox has to be chucked in...
by Lyn
22 Nov 2017, 12:20
Forum: Safety with Chemicals
Topic: calcium granules
Replies: 5
Views: 3236

Re: calcium granules

I had a couple of very old tins of calcium that had oxidised. Similar in appearance to what you describe. It was going to take too long for me to neutralise any possible reactive material (in the fume hood) that might have been in the tins so I left them until we had a chemical pickup. Much simpler ...
by Lyn
02 Nov 2017, 11:54
Forum: Sourcing Materials & Eq Repairs
Topic: Physics repair workstation
Replies: 9
Views: 4568

Re: Physics repair workstation

And a lock on the door that no-one else has a key to, just for those afternoon siestas. Lucky to have that green outlook also.
by Lyn
10 Oct 2017, 12:16
Forum: Recipes and Pracs
Topic: Agar Plates
Replies: 31
Views: 19614

Re: Agar Plates

Same here. Once plates are set I pop them into ziplock sandwich bags (about five plates to a bag) and store them upside down in the fridge.
by Lyn
17 Aug 2017, 16:03
Forum: Safety with Chemicals
Topic: Labelling iodine solution
Replies: 3
Views: 2536

Re: Labelling iodine solution

I think the label you are looking for may be Potassium triiodide solution. It comes up when you select iodine and it gives you choices. I'm happy for someone to say I'm wrong.
by Lyn
10 Aug 2017, 14:11
Forum: Miscellaneous
Topic: Ordering for Practical Lessons
Replies: 50
Views: 23914

Re: Ordering for Practical Lessons

It's worth every penny.
by Lyn
29 May 2017, 13:23
Forum: Safety with Chemicals
Topic: Chemical Management Handbook
Replies: 8
Views: 4574

Chemical Management Handbook

Science Assist has produced the following: Chemical Management Handbook for Australian Schools - Edition 1 I think it is a useful handbook for all lab techs. Check out the Science Assist site and download the handbook. It also has information on spill management and waste disposal. The waste disposa...
by Lyn
28 Apr 2017, 10:39
Forum: Sourcing Materials & Eq Repairs
Topic: Clear PVA Glue
Replies: 6
Views: 4183

Re: Clear PVA Glue

Clag Clear Gum glue in 5L containers works really well - try Officeworks. Used to be able to get this glue from SBA Office National but they now carry a different brand of clear glue. Probably still worth a try though. Slime Recipe : 25ml clear clag gum 6 pumps of Sorbolene hand cream (with 10% glyc...
by Lyn
04 Apr 2017, 12:05
Forum: Recipes and Pracs
Topic: Potassium Permanganate
Replies: 13
Views: 6260

Re: Potassium Permanganate

I have a small quantity which rarely gets used. Although the Laboratory Manual by B. Dungey does mention using it for filtering potassium permanganate when you prepare a solution. I get a little paranoid that one day some teacher is going to see the word wool ignore the fact that it has glass writte...
by Lyn
03 Apr 2017, 16:57
Forum: Recipes and Pracs
Topic: Potassium Permanganate
Replies: 13
Views: 6260

Re: Potassium Permanganate

....and just how long has it been sitting in your Chem store with you wondering what the devil it's used for? :coffee:
by Lyn
03 Apr 2017, 10:53
Forum: Safety with Chemicals
Topic: SDS
Replies: 49
Views: 24650

Re: SDS

Although most of my chemicals are from ChemSupply if I have any feral chemicals that I can't get SDS from the supplier named on the bottle I will use SDS from ChemSupply or any other source as long as it is in date. I have just been on the Thermo Fisher site and it is unwieldy and time consuming to ...
by Lyn
31 Mar 2017, 14:16
Forum: Biology, Physics...
Topic: IB prac
Replies: 3
Views: 4693

Re: IB prac

I googled the following - science experiments on fruit storage - and the first one up was Science Buddies with - How does Packaging affect the ripening of fruit? Check it out. It suggests materials, procedures and suggestions for how to make it your own experiment with other ways of looking at the e...
by Lyn
01 Mar 2017, 11:18
Forum: Chemistry and Labware - General
Topic: Stain removal year 11 prac
Replies: 6
Views: 4754

Re: Stain removal year 11 prac

Have just read the background information on this prac and it calls for the use of solid oxygen bleach which is sodium percarbonate. Basically the ingredient that is in products like Napisan or the Coles or Woolies nappy treatment, which are far cheaper than Napisan. As yet my chem teacher has not g...
by Lyn
10 Feb 2017, 10:50
Forum: Safety with Chemicals
Topic: Shower testing frequency
Replies: 7
Views: 3611

Re: Shower testing frequency

I'm thinking what's a PITA, racking the grey cells and then the penny dropped. Yes definitely a PITA.
by Lyn
17 Nov 2016, 15:56
Forum: Recipes and Pracs
Topic: hydrogen peroxide and magnesium oxide
Replies: 9
Views: 4430

Re: hydrogen peroxide and magnesium oxide

Hello fire department?
Risk assessment??
Teacher demonstration??
Bucket chemistry??
Tell us how it goes.
by Lyn
10 Nov 2016, 15:10
Forum: Sourcing Materials & Eq Repairs
Topic: Scientrific Mini Lab 11
Replies: 3
Views: 2517

Re: Scientrific Mini Lab 11

Just do a search for forum rules and it will explain about removal of the website. You can Google the equipment name and it will take you to the appropriate website.
by Lyn
09 Nov 2016, 16:19
Forum: Recipes and Pracs
Topic: recipe for fake blood
Replies: 7
Views: 4263

Re: recipe for fake blood

If you are doing blood spatter for Forensic science this works for me. 175g corn flour 75ml water 175ml golden syrup 3 teaspoons of red food colour 1 teaspoon green food colour Mix together. If it isn't splattery enough add a little more water. I had some of this made up and put the leftovers in a g...
by Lyn
03 Nov 2016, 17:10
Forum: Safety with Chemicals
Topic: Chemwatch 'fun'
Replies: 24
Views: 10295

Re: Chemwatch 'fun'

If the name Scharlau came up for the safety data sheet for 32% hydrochloric acid instead of a Chem Supply named safety data sheet then that will be okay to use. Chem Supply distributes the Scharlau brand.