Search found 9 matches

by kjt
17 Feb 2014, 09:26
Forum: Jobs Forum
Topic: Maternity Leave - Cremorne NSW
Replies: 3
Views: 6642

Maternity Leave - Cremorne NSW

Hi All,

I am going on maternity leave (yay!) starting Term 2 2014. The position is for 4 days per week and requires some chemistry qualification. Apply by Monday 3rd March. Details can be found at:

http://www.redlands.nsw.edu.au/go/about ... ortunities

Cheers,
Kirsty
by kjt
18 Sep 2013, 11:26
Forum: Miscellaneous
Topic: can anyone recommend a dishwasher for science
Replies: 8
Views: 6809

Re: can anyone recommend a dishwasher for science

We use both professional and household dishwashers. If you have the budget, I highly recommend the Miele. We have had to replace our standard washers but the Miele shows very little wear in 6 years even though it is used more frequently. I believe the labour/time saving of the Miele makes the extra ...
by kjt
14 Aug 2013, 15:23
Forum: Safety with Chemicals
Topic: Safety showers.
Replies: 24
Views: 9353

Re: Safety showers.

Safety showers/Eye wash stations often do not have drains nearby, unless a separate waste system is in place, as this prevents the 'dangerous' chemicals from being washed into the sewer system if the showers are used. Annoying, I know! We keep a bucket and mop handy in case of accidental (or deliber...
by kjt
07 Nov 2012, 10:13
Forum: Miscellaneous
Topic: Luminol
Replies: 16
Views: 13501

Re: Luminol

A simple method of showing the chemiluminescence of Luminol is to use it with bleach. This reaction does not last as long as with an iron catalyst but is very easy and reliable! I used both this and a more complicated method with potassium ferricyanate to simulate blood. Method from NCSU: Materials:...
by kjt
31 Oct 2011, 12:55
Forum: Sourcing Materials & Eq Repairs
Topic: Sulfamic Acid
Replies: 7
Views: 3550

Re: Sulfamic Acid

We do the Briggs-Rauscher oscillating clock but do not use sulfamic acid. We use the method found at:

http://chemistry.about.com/cs/demonstra ... 50204a.htm

Works well and the kids love it!
by kjt
24 Aug 2011, 12:45
Forum: Safety with Chemicals
Topic: ALERT Manganese Dioxide
Replies: 43
Views: 13103

Re: ALERT Manganese Dioxide

Hi, If you have your chemicals register/manifest stored in Chemwatch (you don't need quantities) you can export the data to Excel and include a column listing all the MSDS issue dates. (You have to have a copy less than 5 years old from the issue date, not the print date). I then just check the list...
by kjt
29 Jul 2011, 10:14
Forum: Safety with Chemicals
Topic: DG codes
Replies: 27
Views: 9460

Re: DG codes

Hi, I wouldn't worry about having to change the current labels yet as the GHS Companion Guide previously referred to states: "the Competent Authority can allow employers to use alternative means of giving workers the same information in a different written or displayed format when such a format...
by kjt
20 Jun 2011, 13:27
Forum: Recipes and Pracs
Topic: Eriochrome Black T
Replies: 15
Views: 8072

Re: Eriochrome Black T

Our indicator/salt crushed solid is pale purple. When added to three water samples tested today, they started out a deep pink (almost cranberry) then went through purple to blue when titrated with EDTA (using method in Conquering Chemistry HSC).
by kjt
17 Jun 2011, 13:20
Forum: Recipes and Pracs
Topic: Eriochrome Black T
Replies: 15
Views: 8072

Re: Eriochrome Black T

Hi, We have used a salt/solid for several years now (and it keeps for years). The students just add a very small amount of solid to the solution instead of a prepared liquid indicator (which was a pain as it had to be fresh). We got the recipe from the internet and from memory it was: 1g Eriochrome ...