Search found 95 matches

by Judy R
19 Feb 2010, 08:54
Forum: Chemistry and Labware - General
Topic: random question?
Replies: 13
Views: 3821

Re: random question?

I faxed the Clock reaction to the two who requested it.
Please post acknowledgement when you receive it
by Judy R
18 Feb 2010, 13:24
Forum: Chemistry and Labware - General
Topic: random question?
Replies: 13
Views: 3821

Re: random question?

Sounds like the Clock Reaction to me.
Post your fax no. and I will send you a copy...it is great fun
by Judy R
17 Feb 2010, 11:04
Forum: Recipes and Pracs
Topic: making sulphur dioxide
Replies: 4
Views: 2136

Re: making sulphur dioxide

This is a fume hood only,Teacher Dem
When I worked in NSW we did not make it!!!
Check your CSIS handbook
My advice is tell hin NO!
by Judy R
11 Feb 2010, 10:11
Forum: Sourcing Materials & Eq Repairs
Topic: Spending $10,000
Replies: 7
Views: 2512

Re: Spending $10,000

I would recommend a video microscope,video flex,data loggers,water testing backpacks....to name just a few.
Update your Physics equipment....check out the Pasco stuff
by Judy R
02 Feb 2010, 11:33
Forum: Safety with Chemicals
Topic: Transport of chemicals
Replies: 17
Views: 4603

Re: Transport of chemicals

You are under no obligation to transport chemicals.
The second campus should have their own supply and stored correctly.
In 20 years I have not transported chemicals in my car...it is too dangerous!!!!
by Judy R
13 Nov 2009, 09:35
Forum: Safety with Chemicals
Topic: Disposal of flammable chemical mixture
Replies: 7
Views: 3176

Re: Disposal of flammable chemical mixture

Hi Joy, This reaction will stay hot for a time so be careful. Leave it in the bucket in the fumehood,turn on the fumehood and add lots of water to the mixture....when it has stopped reacting and is cool wash it down the sink with copious quantities of water. Discourage him from doing this reaction a...
by Judy R
17 Sep 2009, 11:46
Forum: Safety with Chemicals
Topic: Safe Work Procedures?? Risk assessment
Replies: 75
Views: 23960

Re: Safe Work Procedures?? Risk assessment

Hi Smiley,
i am in Qld and we purchased the Philip Crisp software...it is somewhere to start.
Having worked in NSW for 15 years I know they are well ahead of Qld on OH&S and hazardous substances and the sooner we get the CSIS package the better.
by Judy R
09 Sep 2009, 10:18
Forum: Recipes and Pracs
Topic: Heat of Reaction
Replies: 9
Views: 8081

Re: Heat of Reaction

The addition of steel wool to copper sulfate soln(1M)_ is a good one to do....temp increase about 15 degrees.
Do it in polystyrene cups.
by Judy R
20 Aug 2009, 13:07
Forum: Recipes and Pracs
Topic: Banned experiments
Replies: 80
Views: 40950

Re: Banned experiments

I would like to clarify the list of "banned" experiments I have shared.This is meant as a guide and to alert new labbies to some of the dangers.The list was given to me years before we had the CSIS handbook and was very helpful. In 20 years experience I am aware that there are teachers who...
by Judy R
14 Aug 2009, 08:27
Forum: Safety with Chemicals
Topic: Copper sulfate soultion
Replies: 38
Views: 16328

Re: Copper sulfate soultion

Concentrations of solutions are based on their molecular weight.....so the molecular weight per litre gives you a 1M solution,then you work your desired concentration from that...it is copper sulfate solution just the pentahydrate not the anhydrous.The anhydrous solution would be made up on its mole...
by Judy R
03 Aug 2009, 13:29
Forum: Chemistry and Labware - General
Topic: Dishwashers - yes i know it has been done before BUT
Replies: 19
Views: 6265

Re: Dishwashers - yes i know it has been done before BUT

We have Miele and that is the machines I have used at previous schools.
You can buy test tube baskets and racks for measuring cylinders,flasks etc
the machines are robust and the service here and in NSW is excellent...worth the money
by Judy R
03 Aug 2009, 08:19
Forum: Miscellaneous
Topic: Where are the Queenslander Labbies
Replies: 9
Views: 4273

Re: Where are the Queenslander Labbies

Hi Biker,
I am a Qld labbie of 3 years prior to that I worked for 17 yrs in Sydney.
My email address is judy.robinson@stritas.qld.edu.au
Love to hear from you.
by Judy R
11 Jun 2009, 11:35
Forum: Biology, Physics...
Topic: Ebony Rods
Replies: 5
Views: 2980

Re: Ebony Rods

Put all the cloths and the rods in a drying oven at a temperature similar to a clothes dryer for about 20mins...works wonders.
Failing that dry off cloths and rods using a hair dryer.
The hair dryer works on the dome of the Van de Graaf if it is a high humidity day as well
by Judy R
22 May 2009, 07:53
Forum: Biology, Physics...
Topic: care of animals in laboratory
Replies: 14
Views: 4864

Re: care of animals in laboratory

Lada,please post your fax number and I will fax information from the CCH lab manual which will help.
Best solution is to keep no animals.
by Judy R
06 May 2009, 09:05
Forum: Safety with Chemicals
Topic: Chemwatch
Replies: 6
Views: 2485

Re: Chemwatch

I have only ever used the online version...Chemgold
It is excellent and I use it for labels,manifest etc
our senior chemistry students also use it
by Judy R
01 May 2009, 13:10
Forum: Chemistry and Labware - General
Topic: Sodium Dichromate for cleaning glassware
Replies: 23
Views: 13736

Re: Sodium Dichromate for cleaning glassware

That is a bit extreme ,the dichromate and acid.
For 20 years I have used a dilute solution of oxalic acid...works for me.
whilst oxalic acid is poisonous it is less hazardous than dichromate and chromic acid.
by Judy R
30 Apr 2009, 10:05
Forum: Biology, Physics...
Topic: what do you use to dissect on
Replies: 17
Views: 6625

Re: what do you use to dissect on

We buy foam sheets from an art supplier and cut them to size.
When finished they are binned...no washing up and easy to store.
by Judy R
24 Apr 2009, 13:39
Forum: Biology, Physics...
Topic: Nutrient agar plates
Replies: 99
Views: 30312

Re: Nutrient agar plates

there is an excellent protocol for Microbiology from Sheryl Hoffmann at Concordia College SA
Her email address is shoffmann@concordia.sa.edu.au however I think I downloaded it from the net.
I have a method for gram staining if you can give me your fax number.
we gram stain every year..it is easy
by Judy R
01 Apr 2009, 13:19
Forum: Sourcing Materials & Eq Repairs
Topic: Micro bunsen burners
Replies: 5
Views: 1947

Re: Micro bunsen burners

You should be using water baths or heating mantles
if you don't have either put the flask into a beaker of water and heat the water...much safer
by Judy R
12 Mar 2009, 13:05
Forum: Safety with Chemicals
Topic: Sodium Iodide
Replies: 3
Views: 1703

Re: Sodium Iodide

Potassium iodide will work as a substitute in most cases