Australia's Science Forum

Hi everyone Some of you have gone to a lot of bother to solve the thermometer problem. I think my way is the ants pants :roll: Just wave the thermometer backwards and forwards slowly through the flame of a bunsen burner(have safety glasses on of course)until all the alcohol joins up.Watch the moveme...

I use Detcon 95 from Serrata.Have found this to be better than anything else.Can be used as a neutral cleaner for rinsing,leave crystal clear glass wear. However for oily residue I use Palmolive liquid from the supermarket,then rinse in a mild solution of Detcon 95.
Cheers
Mother

Hi everyone welcome back for a gruelling 11 week term.(NSW that is) Year 12 have just completed the experiment using EDTA and Eriochrome Black T.This is the first time we have attempted this experiment.I made the solutions up as Rob suggested.The EDTA dissolved very easily,no problem.Found that the ...

Hi Graeme I went looking through my order books for you,as I also have some of these Burettes.The only place I could find for teflon replacement stopcocks was Haines Educational!! Phone No:(03) 9568 6966 (Victoria) or web site: http://www.chemtalk.com.au/viewtopic.php?f=26&t=451 However there is...

Hi Lis
Yes, you are correct.To make Bromine Water is dangerous.I buy mine already made from one of the chemical catalogue books I have.500mls.will last a long time as not much is needed for a prac.Costs about $21.00
Hope this helps you
Mother

I have recently had the request for DCPIP Solution for testing for vitamin C but have discovered that it is not readily available ie phosphoric acid not available to make up the DCPIP soln. Has anyone got any ideas/suggestions/alternatives/recommendations for this basic food test? Lou P. :roll: Hi ...

Hi Nikki Here is a really simple prac.to test for Vitamin C without using DCPIP. Materials required: Iodine Solution Starch Solution(1 teaspoon of cornflour dissolved in 1 cup boiling water) made in advance and leave to cool. This solution is enough for about 8 students. Test Tubes(enough for each f...

Hi Wombat
Just a question-Do you mean zinc powder?

Hi Estelle
I hang my wires with alligator clips from a wire coat hanger!!!.Although this is not the perfect solution and I really don't know what is,at least the students can clip the wires back on themselves in some kind of order.

Hello there
I use galvanised nails and the students clean the coating off with sandpaper.

I am really excited about this site and have printed off quite a few hints!!!
To get back to rust stains- I use a solution of Oxalic Acid for rusty test tubes and glass plates.It is very successful if left overnight.The solution can be reused over and over again saving on wastage.

HI There
I am just wondering if you need to autoclave the nutrient agar if you use disposable sterilised petrie dishes???

Lab assistants in NSW public schools are part of what is called 'SASS' meaning: School Administrative and Support Staff This includes:All Office Staff,Home Science,Science and Library and we are all on the same level of pay.I have completed a TAFE course for Science and Administration. Because I wor...

Both these chemicals are BANNED in NSW schools.I would refuse to prepare this experiment.

Chemical Safety in Schools (CSIS).Volumes 1&2. This is compulsory to have in all NSW(State Schools that is!) Any information regarding the dot system is covered in Volume 1.The Department of Education and Training has directed that it be implemented. If you don't have it in your Science dept.,as...

In NSW we have just had a name change from Lab.Assistant to Laboratory Officer. However having read the other titles I now prefer Laboratory Manager We all are important to the teachers and this name makes us sound very important too!!!