Search found 62 matches

by Anastasia
22 Nov 2017, 08:57
Forum: Safety with Chemicals
Topic: calcium granules
Replies: 5
Views: 3116

calcium granules

Hi everyone,

I have an old bottle of calcium granules that have turned completely white (they look like coconut flakes). There is no reaction with water or dilute HCl. Any ideas about how to dispose of would be much appreciated.

Anastasia
by Anastasia
16 Oct 2017, 11:14
Forum: Safety with Chemicals
Topic: Chemical Stocktake in a Catholic School
Replies: 5
Views: 3573

Re: Chemical Stocktake in a Catholic School

Hi Rita, I am at an Independent school and this is what I do. Our Chemical Register just lists all the hazardous chemicals from the Chemical store not dilute dropper bottles. Non hazardous chemicals are not listed in the Chemical Register but I do stocktake them in a separate file. I use an excel sp...
by Anastasia
24 Aug 2017, 13:18
Forum: Safety with Chemicals
Topic: SDS
Replies: 49
Views: 24082

Re: SDS

My understanding is that you need a Chemical Register with SDS and correct labelling for all hazardous substances whether bought or made up. So you need to check whether what you are making up and using is hazardous.
by Anastasia
23 Feb 2017, 12:41
Forum: Safety with Chemicals
Topic: Lab coats
Replies: 10
Views: 4742

Re: Lab coats

For the schools that provide lab coats, how do you go about having them washed and how often are they washed?
by Anastasia
18 Jul 2016, 09:45
Forum: Biology, Physics...
Topic: Chemistry Trial Exam
Replies: 3
Views: 3986

Chemistry Trial Exam

Hi All,

Our Chemistry teacher would like to know how much of the Year 12 Chemistry Option Topic is tested in the Trial Exam at various schools. Any replies would be appreciated.

Anastasia
by Anastasia
21 Mar 2016, 13:42
Forum: Safety with Chemicals
Topic: Manganese dioxide
Replies: 9
Views: 5016

Re: Manganese dioxide

We use it for junior classes but I have a small amount already deposited in the bottom of the test tube for the students to just add the hydrogen peroxide to and test for the oxygen liberated. Saves on students using a ridiculous amount of the manganese dioxide powder and all the mess!

Anastasia
by Anastasia
21 Mar 2016, 09:06
Forum: Free classifieds - 4 sale/swap/wanted/giveaway
Topic: Free safety glasses
Replies: 1
Views: 4277

Re: Free safety glasses

Hi everyone,

The safety glasses have been claimed :)
by Anastasia
17 Mar 2016, 13:15
Forum: Free classifieds - 4 sale/swap/wanted/giveaway
Topic: Free safety glasses
Replies: 1
Views: 4277

Free safety glasses

Hi everyone,

We have about 65 safety glasses of the type similar to the attached to give away. They are in ok condition. Please PM if interested to arrange for pickup.
I am located in Punchbowl, Sydney.

Thanks
Anastasia
by Anastasia
25 Feb 2016, 13:34
Forum: Announcements
Topic: sad news
Replies: 3
Views: 2386

Re: sad news

RIP Gillian :(
by Anastasia
26 Nov 2015, 10:27
Forum: Sourcing Materials & Eq Repairs
Topic: fume cupboard maintanence
Replies: 6
Views: 3364

Re: fume cupboard maintanence

Our fume cabinets are tested and maintained by DYNAFLOW 9858 0190.
by Anastasia
03 Nov 2015, 13:40
Forum: Recipes and Pracs
Topic: flame test in spray bottles??
Replies: 28
Views: 13460

Re: flame test in spray bottles??

We soak paddle pop sticks in concentrated solutions of the cations overnight. The students then place the paddle pop sticks in the flame just long enough to see the flame colour (any longer and the sticks start to burn). It works well.
by Anastasia
26 Oct 2015, 12:21
Forum: Safety with Chemicals
Topic: Household cleaners and medications
Replies: 1
Views: 1160

Household cleaners and medications

Hi everyone, I am in the process of updating our hazardous chemicals register and printing SDS. I was wondering what to do with general household cleaners (Pine o Cleen, bleach) and the various medications used in Senior Science (Cartia, paracetamol in its various forms, tablets, capsules etc.). Do ...
by Anastasia
15 Sep 2015, 10:53
Forum: Safety with Chemicals
Topic: Talc
Replies: 21
Views: 9080

Talc

Hi everyone,

I received an email this week recommending the disposal of talc from mineral kits as it poses an asbestos risk. Has anyone else received this email? Do you use talc at your school for testing hardness? Will you be getting rid of your talc specimens?

Thanks
Anastasia
by Anastasia
01 Jun 2015, 13:19
Forum: Sourcing Materials & Eq Repairs
Topic: re magnetizing magnets
Replies: 4
Views: 2812

Re: re magnetizing magnets

I use the remagnetiser below with good results. Cost us $50. Just do a search with your regular suppliers.
by Anastasia
23 Mar 2015, 13:58
Forum: Safety with Chemicals
Topic: Sudan III
Replies: 4
Views: 2667

Sudan III

How do you clean up/dispose of Sudan III in the Senior Science prac where they need to differentiate between oil in water and water in oil emulsions? Any help would be appreciated.
by Anastasia
27 Nov 2014, 08:57
Forum: Safety with Chemicals
Topic: GHS Labelling and frustrations with Chemwatch
Replies: 58
Views: 19886

Re: GHS Labelling and frustrations with Chemwatch

CTR F5 seemed to be the trick for me :D Thanks Jazz
by Anastasia
20 Nov 2014, 13:38
Forum: Safety with Chemicals
Topic: GHS Labelling and frustrations with Chemwatch
Replies: 58
Views: 19886

Re: GHS Labelling and frustrations with Chemwatch

Has anyone else had trouble bringing up the labels on chemwatch gold ffx in the last 2 days? It doesn't seem to be working at all for me (14 per page GHS) :-(
by Anastasia
28 May 2014, 14:30
Forum: The Polling Booth
Topic: Do you use distilled water all the time
Replies: 9
Views: 7694

Re: Do you use distilled water all the time

Only use distilled water for year 12 titrations or when a teacher specifically asks for it, generally just use tap water for making up solutions.
by Anastasia
07 Apr 2014, 11:40
Forum: Recipes and Pracs
Topic: Hofmann Voltameter
Replies: 1
Views: 1319

Re: Hofmann Voltameter

You may have a leak? Try reversing the connections and see if you now get more oxygen than hydrogen, if so definitely a leak.
by Anastasia
07 Nov 2013, 12:34
Forum: Announcements
Topic: chemwatch TODAY
Replies: 33
Views: 11656

Re: chemwatch TODAY

Logged in yesterday, unable to log in just now :(