Australia's Science Forum

Hello everyone We are in urgent need of a good reliable pH meter that is easy to use. Any ideas on which is a good one to buy? Or how to repair old ones? What about the soil pH test kits with barium sulphate and universal indicator. What is the best way to use them. they seem to be a bit dodgy. any ...

ps How are you faring there in Cairns. Did you need to put on your dolphin suit?
Tina

Thanks
That looks like a fun idea! I've printed out a copy and will give it a try
Tina

Hi I seem to be having trouble with what should be a simple prac. It has worked beautifully every other year. I Put starch solution in dialysis tubing and tied off the ends. Put this in a beaker of water. Add iodine solution to the water in the beaker. Iodine should diffuse into the bag and make the...

Just out of curiosity, what do you need it for? I have never been asked for malachite before?

Tina

Oops
I have to take back what I said yesterday.
I put matches out for an experiment for the girls as usual. On one bench, nearly 2 whole boxes of matches had been lit and left on the bench without being cleaned up! Just for the sheer joy of seeing matches burn...
But that wont happen again...
Tina

I was just going to ask if anyone in Tamworth wanted some made up agar because I made up another batch and now it is not needed. I used to have a lot of trouble with this but now, thanks to Liz B., it works every time :D . I use: 900 ml of water boiled in the kettle, placed in a 2L beaker add 18g of...

Hi I worked at a school where there were lots of boys who loved matches and did not enjoy school work!. The teacher would get them to write up their prac method at their desk, put their hand up to be checked, be allowed to set up all equipment they would need at the lab bench, put their hand up, get...

Hi everyone
position filled.
Tina

I am based at a private girls school in Tamworth (Calrossy) in northern NSW, and will be away during 2nd term ( 9 weeks in April - June ) (need to check exact dates) I am looking for someone who could fill in for me for all or part of the time, working 4 days per week, or less if that suits better. ...

Hi! We have just bought 16 alcohol burners from Silform. The porcelain stopper in the top of the jar (the one that the wick goes through) is a very loose fit so that alcohol vapours can escape if you don't put the plastic cap over the top. This is different to our existing alcohol burner which has a...

Thanks
I shall go and try out your ideas!
Tina

Hi do you know what causes some bunsen burners to splutter and go out when you turn them to high heat? They burn all right on orange flame but when you totally open them up it sounds like a gust of wind is going through them and then they go out. It is not a gas tap problem because other bunsens wor...