Search found 19 matches

by astagni
22 Oct 2019, 09:02
Forum: Chemistry and Labware - General
Topic: Water purifier - deioniser etc
Replies: 35
Views: 20082

Water deioniser

Hi there,
Wondering if anyone has purchased new water deionisers lately. We have an old Elgastat B114, that is starting to fall apart, the inlet and outlet caps have become brittle and considering the cost of the replacement cartridges, considering replacing it.
Thanks
by astagni
24 Sep 2019, 14:42
Forum: Chemistry and Labware - General
Topic: Microscopes for senior Biology
Replies: 5
Views: 5361

Re: Microscopes for senior Biology

Thanks Macca, what microscope did you end up going with?
by astagni
24 Sep 2019, 12:00
Forum: Chemistry and Labware - General
Topic: Microscopes for senior Biology
Replies: 5
Views: 5361

Microscopes for senior Biology

Hi there.
Looking at purchasing new microscopes for seniors, maybe with a camera! Has anyone had any experience using Smartphone adaptors, whether it would be a cheaper option? Would appreciate your opinion and recommendations. Many thanks... Annie
by astagni
12 Aug 2019, 13:04
Forum: Safety with Chemicals
Topic: Disposal of Sodium Thiosulfate?
Replies: 14
Views: 11830

Sodium thiosulfate

I'm confused!! ! Needed to label some more Sodium thiosulfate containers. Prevously to subscribing to Riskassess, I've used Chemwatch. Riskassess says "not classified as hazardous", blue dot etc However Chemwatch lists it with "warning' and ' toxic to aquatic life'. Interested in any ...
by astagni
25 Jun 2018, 14:38
Forum: Sourcing Materials & Eq Repairs
Topic: Dropper bottle teats
Replies: 30
Views: 20063

Re: Dropper bottle teats

If anyone out there is after the old style rubber teats.... Officemax has them for $0.69c. I just ordered some and were here in two days.
by astagni
02 Mar 2018, 13:30
Forum: Forum Support Desk
Topic: Can't view attached files
Replies: 3
Views: 6299

Re: Can't view attached files

Thanks Elizabeth..... derhhh! Must be Friday!
by astagni
02 Mar 2018, 09:27
Forum: Forum Support Desk
Topic: Can't view attached files
Replies: 3
Views: 6299

Can't view attached files

For some reason I'm seeing this message for some posts. Can anyone advise what this means?
" You do not have required permission to view files attached to this post"
Thanks
Annie
by astagni
23 Nov 2017, 13:15
Forum: Safety with Chemicals
Topic: Sodium chromate
Replies: 11
Views: 5073

Re: Sodium chromate

Hi guys, Linotos. Thanks for your reply. The IB students are starting their Internal Assessment and the teacher at this point has given me a list of chemicals needed, not the actual prac, thus the query regarding Sodium chromate and the use of chromates in general. Regarding the CSIS Samantham....Th...
by astagni
23 Nov 2017, 11:33
Forum: Safety with Chemicals
Topic: Sodium chromate
Replies: 11
Views: 5073

Re: Sodium chromate

They are using the solid. yes, I checked the SDS. It's a S6 poison, toxic, etc
Excuse my ignorance regarding the CSIS. I thought the online version which you need a department 'log in' might have been the 'new ' version? But am gathering its the OLD one just uploaded? Such confusion.
by astagni
23 Nov 2017, 10:30
Forum: Safety with Chemicals
Topic: Sodium chromate
Replies: 11
Views: 5073

Sodium chromate

Hi there, Hoping for some valuable opinions on the use of chromates in senior chemistry. I have been ask to buy Sodium Chromate for IB chemistry but am reluctant because of its classification. Am interested in what the the new CSIS says. I'm from an independent school and don't have access to latest...
by astagni
18 Nov 2016, 08:45
Forum: Recipes and Pracs
Topic: hydrogen peroxide and magnesium oxide
Replies: 9
Views: 4332

Re: hydrogen peroxide and magnesium oxide

Insanity!
Using 35% peroxide in the first place...NO!
by astagni
25 Jul 2016, 14:37
Forum: Recipes and Pracs
Topic: Iron II Sulfate
Replies: 15
Views: 11170

Re: Iron (11) Sulfate Gone Grown

I make it up fresh and make up just enough to cover the prac activity. I usually weigh out lots of 7g and keep it in glass vials, so all I need to do is make them up to 250ml for a 0.1m solution.
by astagni
06 May 2016, 14:44
Forum: Biology, Physics...
Topic: Autoclave
Replies: 16
Views: 10525

Re: Autoclave

We ended up buying a domestic pressure cooker from Target for $60.... Ronson RPA 800, 6L Electric. It does the job .
by astagni
04 May 2016, 10:55
Forum: Safety with Chemicals
Topic: Chem store
Replies: 10
Views: 4727

Chem store

Morning all, with all the who ha on GHS labelling etc ....I am interested in what posters/ information you have on the actual door of your chem store and what is the legal requirement?
Thanks for any knowledge you may have as Safe Work have me on hold waiting, waiting!
by astagni
03 Feb 2016, 09:30
Forum: Chemistry and Labware - General
Topic: Burettes
Replies: 2
Views: 2204

Burettes

Welcome back all,
Looking at buying burettes . Westlab has these Glass PTFE modular stopcock (A grade) Wondering if anyone has bought these and any opinion you may have? Considering the price of these compared to glass ones, are they worth a go? (page 7 in catalogue)
Thanks for any suggestions
by astagni
04 Nov 2015, 10:39
Forum: Safety with Chemicals
Topic: Chemical wastes
Replies: 2
Views: 1877

Chemical wastes

Question:
Where do you labbies store your Chemical waste?
by astagni
28 Oct 2015, 13:47
Forum: Chemistry and Labware - General
Topic: Small safety glasses
Replies: 0
Views: 1545

Small safety glasses

Anyone out there know of suppliers of smaller safety glasses at a reasonable price? Orientation time again and these kids seem to have smaller heads. We bought some, some time ago ..... Unisafe C-view, around $4.50 they are ok, but cant remember where they came from. Any other recommendations. Thanks
by astagni
03 Sep 2015, 09:03
Forum: Sourcing Materials & Eq Repairs
Topic: ISSCO balances
Replies: 1
Views: 1484

ISSCO balances

Morning all, Anyone had any problems with these balances, ISSCO model 601? We have three that dont work and considering returning them to supplier for service or quote to fix. Does anyone out there in Labbie land know anyone in the Wollongong area that does repairs to these and other lab equipment? ...
by astagni
28 May 2014, 10:11
Forum: Recipes and Pracs
Topic: Eriochrome Black T
Replies: 2
Views: 2076

Re: Eriochrome Black T

Hi Noona, We are having a bit of a cull in our Chem store and we have a very old 25g bottle of Eriochrome Black T that has not been used here at our school for yonks. If you are still interested in some I could send it to you. By the way, can you direct me to the prac your using it for. We might hav...