Search found 218 matches

by ELIZABETH
07 Aug 2008, 12:19
Forum: Sourcing Materials & Eq Repairs
Topic: system for heavy text books
Replies: 10
Views: 3968

Re: system for heavy text books

The wheely crates are the best thing since sliced bread and are not that expensive. I got mine from a storage specialty shop for about $35 each and have seen them since at stationery shops and even cheapo shops for about $28. Maximum capacity is about 35kg I think.
Liz
by ELIZABETH
06 Aug 2008, 11:00
Forum: Chemistry and Labware - General
Topic: Yr 12 EES Hydrothermal vents
Replies: 2
Views: 1418

Yr 12 EES Hydrothermal vents

Hi All,
I'm wondering if anyone out there has done a demo, simulation or whatever for the Yr 12 EES class on hydrothermall vents ("black smokers"). I did one years ago, but I forget how I did it (and didn't write anything down!!).
I'll be grateful for any help.
Liz
by ELIZABETH
25 Jul 2008, 09:24
Forum: Miscellaneous
Topic: Bench Tops
Replies: 17
Views: 6293

Re: Bench Tops

Hi Jude,
you can probably guess my answer to this!!!
Liz
by ELIZABETH
02 Jun 2008, 13:43
Forum: Biology, Physics...
Topic: Gel Electrophoresis
Replies: 11
Views: 4242

Re: Gel Electrophoresis

Hi All,
I did this prac with bog-standard agar-agar and it worked an absolute treat. I used the 5 batteries and used M&M's as my colour source. Will get the kids to try it for Science Week demo maybe.
Liz
by ELIZABETH
20 May 2008, 13:52
Forum: Sourcing Materials & Eq Repairs
Topic: Electroscope Gold Leaf
Replies: 2
Views: 1924

Re: Electroscope Gold Leaf

Tiny bit of sticky tape and a whole lot of swearing - gold leaf is lighter than dust and just as hard to pin down. Best of luck!!
Liz
by ELIZABETH
15 May 2008, 12:26
Forum: Chemistry and Labware - General
Topic: Swan neck glass tubes???
Replies: 27
Views: 9422

Re: Swan neck glass tubes???

They would be for Pasteur's Experiment. Have a look in GOOGLE images and there are some examples there. A good one is at HowStuffWorks.
by ELIZABETH
08 May 2008, 11:08
Forum: Miscellaneous
Topic: citric acid solution- conduct an electic current?
Replies: 8
Views: 3445

Re: citric acid solution- conduct an electic current?

I've had (a bit) more success using an LED.
Liz
by ELIZABETH
02 May 2008, 09:30
Forum: Announcements
Topic: OZ LOTTO WINNERS
Replies: 11
Views: 4685

Re: OZ LOTTO WINNERS

Yep, they were pathology technicians- ther'll be plenty of jobs in path lab for a while!
Liz
by ELIZABETH
31 Mar 2008, 12:30
Forum: Chemistry and Labware - General
Topic: slime borax
Replies: 21
Views: 9024

Re: slime borax

Hi,
You can just buy Powdered Borax in the laundry aisle at the supermarket - comes in a white 500g jar with a red lid.
Cheers
LIZ
by ELIZABETH
19 Mar 2008, 08:17
Forum: Safety with Chemicals
Topic: Bromine water
Replies: 10
Views: 4327

Re: Bromine water

For safety and ease, use the ready-made Bromine water; some things are just not worth the risk.
The shelf-life of Br water is reasonable, and it's not expensive.
Liz
by ELIZABETH
07 Feb 2008, 13:27
Forum: Miscellaneous
Topic: From outer space to microscopic email
Replies: 4
Views: 2394

Re: From outer space to microscopic email

UNBELIEVABLE!!!!!!!
by ELIZABETH
06 Dec 2007, 08:18
Forum: Safety with Chemicals
Topic: Chemwatch Issues
Replies: 48
Views: 17183

Re: Chemwatch Issues

Sorry, forgot to include my fax number! It's 0267711979.
Thanks
Elizabeth
by ELIZABETH
05 Dec 2007, 12:59
Forum: Safety with Chemicals
Topic: Chemwatch Issues
Replies: 48
Views: 17183

Re: Chemwatch Issues

Hi Jazz,
I'd love a copy of your instructions - the label function is the only bit of Chemgold 2 that I find clunky!
Regards,
Elizabeth
by ELIZABETH
23 Nov 2007, 10:24
Forum: Biology, Physics...
Topic: Benedict's & Biuret
Replies: 9
Views: 4633

Re: Benedict's & Biuret

Hi
Yeah, I use the same conc. and quantity and always get a good colour change.
Cheers

Liz
by ELIZABETH
23 Nov 2007, 08:05
Forum: Biology, Physics...
Topic: Benedict's & Biuret
Replies: 9
Views: 4633

Re: Benedict's & Biuret

Hi All,
Re the Biuret test; I use sodium carbonate instead of sodium hydroxide - gives a better result and is safer to use.
Liz
by ELIZABETH
01 Nov 2007, 10:47
Forum: Biology, Physics...
Topic: freezing eyes
Replies: 5
Views: 2607

Re: freezing eyes

Hi,
Normal saline is 0.9% and I've successfully frozen eyes in this solution (mind you, having read all about freezers going off during the hols.......).
LIZ
by ELIZABETH
29 Oct 2007, 10:19
Forum: Miscellaneous
Topic: The Iodine Clock Reaction
Replies: 3
Views: 2544

Re: The Iodine Clock Reaction

Hi Tammy,
The following site has a good "recipe"for the clock reaction. Have done it and it works well - bit of a practice is a help.
Cheers
LIZ



http://www.usoe.k12.ut.us/CURR/SCIENCE/ ... iodine.htm
by ELIZABETH
25 Oct 2007, 11:33
Forum: Chemistry and Labware - General
Topic: Saliva Experiments
Replies: 16
Views: 6128

Re: Saliva Experiments

Hi Judy and Sue, We're in the midst of enzyme pracs (again!!!!). Every year look for the best prac I can find to fit the students. This year's version is really good and is all experiemnts are working well. I've scanned the instructions into this computer and will upload them to this site. The file ...
by ELIZABETH
23 Oct 2007, 14:33
Forum: Biology, Physics...
Topic: Enzyme prac Y11-12
Replies: 19
Views: 7049

Re: Enzyme prac Y11-12

You can also use small pieces of potato in place of silverbeet - lotsa bubbles.
LIZ
by ELIZABETH
23 Oct 2007, 11:51
Forum: Biology, Physics...
Topic: Enzyme prac Y11-12
Replies: 19
Views: 7049

Re: Enzyme prac Y11-12

Hi Rae, I made an egg-white suspension by blending a hard-boiled egg white with 200mLs distilled water using a wand blender (Bamix type). Blend it for about 5mins and then filter it thru muslin a few times. When you add this to the pepsin the solution is sort of murky. As the egg white is "dige...