Search found 149 matches

by AnnNos
28 Aug 2019, 11:54
Forum: Announcements
Topic: Will you be the lucky winner of the Golden Ticket?
Replies: 21
Views: 1010

Re: Will you be the lucky winner of the Golden Ticket?

Got my blue ticket. Thanks Westlab team
by AnnNos
07 Jun 2019, 09:04
Forum: The Polling Booth
Topic: Topic Suggestions for Future PD Sessions
Replies: 12
Views: 1606

Re: Topic Suggestions for Future PD Sessions

Thanks Westlab. I received the stoppers yesterday.
by AnnNos
07 Jun 2019, 07:44
Forum: Safety with Chemicals
Topic: Latest Aus std AS1940
Replies: 5
Views: 573

Re: Latest Aus std AS1940

The Chemical Safety in Schools package has the quantities that are allowed to be stored on school premises. This includes the maximum quantities per school block.
by AnnNos
22 May 2019, 07:51
Forum: Recipes and Pracs
Topic: year 12 ester prac
Replies: 1
Views: 388

Re: year 12 ester prac

I have used salicylic acid before and have used it as a solid.
Add 5g salicylic acid to 25mL Methanol in a dry 50mL round bottom flask. Add boiling chips and reflux for 90 minutes.
I haven't used decanoic acid before.
by AnnNos
20 Feb 2019, 06:52
Forum: Biology, Physics...
Topic: Physics prac - Parallel wire conductors
Replies: 3
Views: 870

Re: Physics prac - Parallel wire conductors

We use alfoil 250mm long, 12mm wide and 20mm apart attached to firm pieces of cardboard either end. Works well
by AnnNos
07 Feb 2019, 07:06
Forum: Chemistry and Labware - General
Topic: Chemical Suppliers
Replies: 11
Views: 1658

Re: Chemical Suppliers

I bought copper sulfate powder and when students dissolved in water and crystallised the solution many of the crystals were green. When I contacted them they advised they buy in bulk, make a huge pile to mix it up then bottle it themselves. Hence, some copper chloride might be present. I don't buy c...
by AnnNos
01 Feb 2019, 07:17
Forum: Chemistry and Labware - General
Topic: Help - mixed chemicals
Replies: 5
Views: 959

Re: Help - mixed chemicals

Use sodium carbonate to precipitate out the Cu and Mg, decant the solution and bring to neutral and pour down the sink. Then wrap up the solids and dispose of in the rubbish.
by AnnNos
19 Dec 2018, 07:50
Forum: Chemistry and Labware - General
Topic: Another unknown item
Replies: 9
Views: 2149

Re: Another unknown item

It might be a Ruben's tube.
Gas goes in one end, you cover the open end with a balloon membrane and play music (as in a radio or mobile phone) against the membrane. When you light it the flames jump to the beat of the bass notes.
by AnnNos
29 Jun 2018, 11:04
Forum: Announcements
Topic: Technician recognition
Replies: 3
Views: 720

Re: Technician recognition

Technician Acknowledgement Day - Technowledgement Day or week
by AnnNos
26 Jun 2018, 12:40
Forum: Chemistry and Labware - General
Topic: Light gates
Replies: 2
Views: 783

Re: Light gates

Vernier has a Sound Level Sensor that is a simple, easily-operated sensor to measure and investigate sound levels in classroom environments but it is not a gate. You can purchase a 'Noise Gate' but I don't think it is used with Data Loggers.
by AnnNos
19 Jun 2018, 14:29
Forum: Sourcing Materials & Eq Repairs
Topic: Measuring Cylinders
Replies: 11
Views: 1259

Re: Measuring Cylinders

I purchased the blue based ones. If they fall over and the sleeve plastic is not right at the top the measuring cylinder breaks fairly readily. They are not strong glass and I wouldn't buy them again.
by AnnNos
16 Mar 2018, 06:49
Forum: Sourcing Materials & Eq Repairs
Topic: Turn around time for Equipment orders?
Replies: 12
Views: 1313

Re: Turn around time for Equipment orders?

My last Haines order came in 2 weeks. The only time they were late before this was when there were items on back order.
by AnnNos
21 Feb 2018, 12:50
Forum: Announcements
Topic: Important Message from the SLAMN Team
Replies: 8
Views: 1091

Re: Important Message from the SLAMN Team

I missed last year and was looking forward to this year. The conference was such a great networking opportunity and the knowledge and ideas learnt were second to none. Thank you for your organisation and hard work.
by AnnNos
18 Dec 2017, 13:02
Forum: Safety with Chemicals
Topic: SDS Filing Order
Replies: 4
Views: 684

Re: SDS Filing Order

I do propanol - alphabetically in the flammable cupboard-1 then 2 and agar - normal then nutrient - in the inert chemicals.