Search found 204 matches
- 03 May 2017, 11:39
- Forum: Chemistry and Labware - General
- Topic: Chlorine gas
- Replies: 7
- Views: 7767
Re: Chlorine gas
Thanx BBB
- 03 May 2017, 10:46
- Forum: Chemistry and Labware - General
- Topic: Chlorine gas
- Replies: 7
- Views: 7767
Re: Chlorine gas
Teacher wants it for students to observe colour.
- 03 May 2017, 09:47
- Forum: Chemistry and Labware - General
- Topic: Chlorine gas
- Replies: 7
- Views: 7767
Chlorine gas
How much HCl and KMnO4 will I need to fill 1 gas jar? (as per p40 The Laboratory)
- 06 Apr 2017, 09:34
- Forum: Recipes and Pracs
- Topic: Thermite Reaction
- Replies: 3
- Views: 2856
Re: Thermite Reaction
I've done it once myself and a teacher did a demo outside. Don't do it on a rainy day. Method in CSIS Appendix F under 'Aluminium'.
- 21 Mar 2017, 07:14
- Forum: Announcements
- Topic: RETIREMENT guess who?
- Replies: 15
- Views: 8138
Re: RETIREMENT guess who?
You lucky duck! All the best, Sue.
- 08 Mar 2017, 13:58
- Forum: Miscellaneous
- Topic: Natural Gas
- Replies: 6
- Views: 5708
Re: Natural Gas
Are the new bunsens for use with natural gas (should have letters NG on base)? They have different jet to the LPG burners.
- 24 Feb 2017, 14:08
- Forum: Announcements
- Topic: How are you purchasing chemicals & Groceries
- Replies: 9
- Views: 5744
Re: How are you purchasing chemicals & Groceries
I purchase most of the groceries and abattoir items, scan receipts and lodge requisition form online - reimbursed into my bank account. Record all trips and claim on tax. Most chemicals from the usual SSA, Westlab etc.
- 08 Feb 2017, 07:27
- Forum: Sourcing Materials & Eq Repairs
- Topic: Big bag thingy
- Replies: 5
- Views: 3270
Re: Big bag thingy
We've got one, called Solar Airship (supplier unknown) which came with kite-line and handle. Works well in the morning.
- 25 Oct 2016, 08:54
- Forum: Announcements
- Topic: Christmas is coming
- Replies: 7
- Views: 4659
- 18 Oct 2016, 13:58
- Forum: Safety with Chemicals
- Topic: URGENT request for help!
- Replies: 21
- Views: 15828
Re: URGENT request for help!
Insist on teachers putting in risk assessments for pracs. If the activity is not compliant with CSIS, eg. a chemical is inappropriate for the year group, don't sign (if using RiskAssess). We can't manage the lab if teachers are helping themselves to the resources. If your HT doesn't accept this, may...
- 14 Oct 2016, 08:58
- Forum: Chemistry and Labware - General
- Topic: Plastic storage Sulfuric acid
- Replies: 6
- Views: 4237
Re: Plastic storage Sulfuric acid
I give them H2SO4 in a capped bottle in a beaker with a plastic Pasteur pipette.
- 02 Sep 2016, 10:02
- Forum: Sourcing Materials & Eq Repairs
- Topic: Gratnells trays
- Replies: 3
- Views: 2870
Gratnells trays
Anyone know where I can get trays for a Gratnells A3 trolley?
- 25 Aug 2016, 08:30
- Forum: Recipes and Pracs
- Topic: flame test in spray bottles??
- Replies: 28
- Views: 18606
Re: flame test in spray bottles??
I don't like spray bottles because reasons stated by others, plus kids manage to extinguish the Bunsen flame. The IEC flame spectrometer is good for demos.
- 05 Aug 2016, 13:25
- Forum: Recipes and Pracs
- Topic: Degassed water
- Replies: 4
- Views: 2918
Re: Degassed water
I put a magnetic stirrer in a beaker of water and mix for about 20 minutes.
- 02 Aug 2016, 14:32
- Forum: Safety with Chemicals
- Topic: GHS Labeling
- Replies: 123
- Views: 46352
Re: GHS Labeling
Hi Bec. I started using Chemwatch but switched to RiskAssess when became available because you can generally enter whatever molarity or %age you want, but not with iodine for reasons unknown. So sometimes I check with Chemwatch if not happy with RA.
- 26 Jul 2016, 13:20
- Forum: Sourcing Materials & Eq Repairs
- Topic: Thin Layer Chromatography
- Replies: 5
- Views: 3644
Re: Thin Layer Chromatography
Used TLC extensively in toxicology lab (1990s) for drugs of abuse screening. Plates were approx. 20 x 10 cm and we ran 20 samples plus controls on each plate. Plates were run in ethyl acetate, dried then viewed under UV lamp and sprayed with various chemicals to show up +ves.
- 06 Jun 2016, 12:28
- Forum: Announcements
- Topic: Do hope you are all SAFE & DRY?
- Replies: 4
- Views: 2420
Re: Do hope you are all SAFE & DRY?
The road to my school was cut by floodwaters this a.m., had to take the long way around. Waiting to hear of possible bridge closures at Windsor and Richmond - half the Science Dept. including myself live on the other side of Hawkesbury River.
- 03 Jun 2016, 12:40
- Forum: Safety with Chemicals
- Topic: Labelling Indicators
- Replies: 7
- Views: 4161
Re: Labelling Indicators
I used Chemwatch for Universal Indicator Solution.
- 30 May 2016, 10:24
- Forum: Safety with Chemicals
- Topic: GHS Labeling
- Replies: 123
- Views: 46352
Re: GHS Labeling
RiskAssess GHS labelling much easier to use than Chemwatch; just enter chemical name, choose label size (choice of 4), choose solid or solution; if the latter, enter molarity then download and print.
- 26 May 2016, 11:32
- Forum: Safety with Chemicals
- Topic: how often do you clean chem stores?
- Replies: 10
- Views: 4644