Search found 443 matches

by Jazz
03 May 2017, 11:49
Forum: Chemistry and Labware - General
Topic: Chlorine gas
Replies: 7
Views: 4903

Re: Chlorine gas

easier way
1 milton tablet 5-10 mL of 2M HCl
by Jazz
03 May 2017, 10:16
Forum: Chemistry and Labware - General
Topic: Chlorine gas
Replies: 7
Views: 4903

Re: Chlorine gas

You want to fill in gas jar with chlorine? Why? "This is toxic if breathed in, causing severe lung damage. It irritates the eyes, skin and respiratory system. It may trigger an asthma attack and the effects of exposure may be delayed for some hours. For a 15-minute exposure, the concentration o...
by Jazz
15 Feb 2017, 13:02
Forum: Chemistry and Labware - General
Topic: Stain removal year 11 prac
Replies: 6
Views: 4649

Re: Stain removal year 11 prac

I would not recommend to heat bleach, See manufacturer's SDS sheet section 10. STABILITY AND REACTIVITY she could try different water temperature using solid bleach (bleach stick) use different materials with same bleach same material different bleach same material same bleach different stains Check...
by Jazz
09 Sep 2016, 13:09
Forum: Recipes and Pracs
Topic: Solubility of Barium sulfate and calcium sulfate
Replies: 4
Views: 3222

Re: Solubility of Barium sulfate and calcium sulfate

barium sulfate is insoluble in water, calcium sulfate has limited solubility 0.2gr per 100 mL
https://en.wikipedia.org/wiki/Solubility_table
by Jazz
29 Aug 2016, 11:39
Forum: Recipes and Pracs
Topic: flame test in spray bottles??
Replies: 28
Views: 13449

Re: flame test in spray bottles??

Hi Xenon
I was thinking to buy one, how easy is to use IEC spectrometer?
by Jazz
23 Aug 2016, 10:20
Forum: Recipes and Pracs
Topic: Diluting acid
Replies: 4
Views: 2972

Re: Diluting acid

you ned 250mL
I can not remember when was the last time I used calculator, only this site ( check volume L/mL )

http://www.sigmaaldrich.com/chemistry/s ... lator.html
by Jazz
09 Aug 2016, 10:56
Forum: Chemistry and Labware - General
Topic: concentrated cobalt chloride
Replies: 4
Views: 3121

Re: concentrated cobalt chloride

for equilibrium prac,as a demo, all you need is
cobalt solution - 1g of CoCl2.6h2O in 10 mL of 2 - propanol. Then add water drop wise until the deep blue solution just turns pink ( in the test tube or 10 mL specimen jar)
1 ice bath
1 water bath at 100 degrees C
by Jazz
25 Jul 2016, 15:13
Forum: Recipes and Pracs
Topic: Iron II Sulfate
Replies: 15
Views: 11188

Re: Iron (11) Sulfate Gone Grown

splash of 1 M sulfuric acid
by Jazz
24 Jun 2016, 13:24
Forum: Sourcing Materials & Eq Repairs
Topic: Where to buy polystyrene?
Replies: 10
Views: 4466

Re: Where to buy polystyrene?

spotlight,
by Jazz
08 Jun 2016, 12:14
Forum: Safety with Chemicals
Topic: GHS Labeling
Replies: 123
Views: 44985

Re: GHS Labeling

WHS Regulation Changes pending GHS Imp
WHS Regulation Changes pending GHS Implements 001.jpg
lements
by Jazz
02 May 2016, 14:09
Forum: Chemistry and Labware - General
Topic: Sulfur
Replies: 4
Views: 3262

Re: Sulfur

not sure why do you need to melt sulfur.U
se sulfur roll, brake it into smaller pieces and use it for the experiment
1038974 Sulfur roll
or watch this video
http://science.wonderhowto.com/how-to/c ... ur-302524/
by Jazz
02 May 2016, 14:06
Forum: Safety with Chemicals
Topic: disposal of iodine after sublimation demo
Replies: 1
Views: 1957

Re: disposal of iodine after sublimation demo

you can left iodine to disperse in fume hood or you can add sodium thiosulfate until clear, flash down the drain with copious amounts of water
by Jazz
27 Oct 2015, 09:00
Forum: The Lab Tech Position
Topic: WHS Training
Replies: 5
Views: 6294

Re: WHS Training

Hi I finished my course last semester. This unit is about environmental impact. e.g to reduce paper consumption: minimise printing by using electronic versions for policies, procedures note taking, check befor print, double sided printing, smaller font, reusing printed paper for drafts,use other sid...
by Jazz
12 Oct 2015, 13:12
Forum: Miscellaneous
Topic: Donation
Replies: 1
Views: 2394

Re: Donation

All gone, thank you
by Jazz
09 Oct 2015, 07:44
Forum: Miscellaneous
Topic: Donation
Replies: 1
Views: 2394

Donation

Hi we recently replaced our microscopes and now looking to donate our old ones. They are older style microscopes in good working order (without lamp) would sute junior or primary students. if you know small country school in need of microscopes please let me know.No charge for microscopes but receiv...
by Jazz
02 Dec 2014, 07:03
Forum: Chemistry and Labware - General
Topic: M & M prac
Replies: 11
Views: 5219

Re: M & M prac

We use wooden cubes, 100 pieces cost 3.90. I spray painted one side, you can draw X or O on one side or put small sticker. You can use counters different colours with X sign on one side
After all this work they still use M&M
Wooden cubes are not sweet as lollies :-|
by Jazz
01 Dec 2014, 11:27
Forum: Safety with Chemicals
Topic: GHS labels for dropper bottles
Replies: 6
Views: 3673

Re: GHS labels for dropper bottles

Just completed my WHS studies. Anything to do with labelling go to http://www.workcover.nsw.gov.au/formspublications/publications/Documents/1labelling-workplace-hazardous-chemicals-code-of-practice-3562.pdf For labelling small containers you can find information Regulation 335 Part 3 Schedule 9 page...
by Jazz
26 Nov 2014, 08:43
Forum: Announcements
Topic: Less than 2 weeks til Conference
Replies: 16
Views: 6297

Re: Less than 2 weeks til Conference

Thank yo so much