Australia's Science Forum

I dispose our agar plates by putting them in the microwave for 10 minutes in a microwave bag and then sealing that bag in another bag and then putting it in the tuckshop external waste bin.

Bindi, Do you have a hospital near you? I ask because they may get their own order of dry ice in and be willing to let you have a couple of Kg (you will need 2kg min to last the day). Alternative talk with your blood collection agencys (pathology collectors) as they use dry ice for storage of certai...

Hello,

We use old stockings, one per slinky, works well and allows transport between rooms easier than the board system

regards
Michelle

Try Dry ice (CO2).

Hello,

We have glass beads which you can get from office max. get two different sizez, we have 4mm and 6mm beads.

Hello Tracy, Lada information is the combination we use. In fact our weak acid is vinger. Took this route because after several attempts of the Copper sulphate version I never got it working just right, but best type was to mix the plaster with 1M dirty copper sulfate, half pour into container, add ...

Hello Tracy,

What are they using the ore for?
Depending on the use Ihave several techniques for different ore types.

Regards
Michelle

Mother, A modified extraction prac with strawberries. Can use Kiwi fruit as alternative. Materials: •1 heavy duty zip-lock bag •Cheesecloth or 'Chux' wash cloth •Wooden coffee stirrer •Funnel •Test tube •1 strawberry (cut into quaters and frozen/defrosted to aid m...

Hi,

I use Finish powerball tablets and find I have no problems with cleaning items.
If it is an especally dirty load I use the pots cycle, and like others soak really stobourn stuff.

Regards
Michelle

Hello Robb,

May I please have a copy of those experiements, especally endothermic ones.

Thanks
Michelle

Hello,

I have the same problem, We use a strond electromagnet (physic has it) and use that to attracht the filings off.

The tape method does work, but use gaffa tape.
You will loose most of the fillings.

Regards
Michelle

Hello all, When it come to being away, sick leave is one thing, but last year I was away for study reasons for 4 weeks split by a holiday. I work during the holiday to clean up from the week I was away, and to prepare for the further 3 weeks. On my return it took me 2 weeks to return the labs to fun...

Holidays??? I work 5 weeks out of term time, term is only 38 week, 37 this year due to EQ being 41 weeks. The week before school is preperation of student folders and timetable stuff, eg sorting out room issues, eg physics in biology room when biology is in physic room. Between terms I clean desks a...

Hello everyone, Here is a wonderful word some of us need to use with teachers NO I have had to use it several time this week as teachers have asked for last minute practicals to fill in lessons. We know how long it takes to prepare work, and we should be like Scottie (Star Trek) and always give teac...

Hello, Our year 8 fill in activity is seperating a mixture of Iron filings, sand and salt. They use magnet for iron, add water to dissolve salt and filter sand then evaporate the water to get the salt. Extention is to collect the water during evaporation (they have to ask me for a distilitation kit....

Does your agar have nurtient broth in it? It sound like you only have the agar which is only a setting agent, bot a food source for the bacteria. On another point, letting students cough onto the plate is not advisable as it is not allowed due to WH&S for Qld. There are several different previou...

Hello Everyone, I have been asked by the Principle to find out what methods of moving equipment and chmeicals are existing, or being planned in schools. We have science laboratories spread between three floors and no means of lifting equipment other than my legs. We are also looking at saftey becaus...

Hello, Chemwatch on the internet does not so lables and is so user inflexable :mad: I returned to the CD version of the program. :-) Does all the lables as it always has done. Chemwatch on the internet was a lesson in the principle that just because something is new does not make it better. :!: Rega...

Hello Anastasia, When I started I was the first laboratory assistant at this school. I have been here 4 year now and am still training the teachers. I have a one day notice rule for common pracs and demos, two weeks to a month for dissections and as much time as they can for new complex experiements...

Hello,

The best way to prevent the CaOH from clouding the lime water is to store it in a really tall bottle, we use some old style glass cordial bottles with the leaver stopper.

With the tall bottle you are less likley to disturbe the sedemint on decantering.

Regards
Michelle