Australia's Science Forum

It is a very good rule to always use Distilled water for Diluting anything. It is one of the purest waters we can use.

I think in this case Breakdown, means if you are going to Dilute DOWN to another M. Say you had 6M eg 500ml of 6M add 2.500ml of distilled water for 1M.

I did not know they got a Public Holiday, perhaps they miss out on some thing else??

Sorry you also asked what is the difference between.

Tribasic has 3 Replaceable Hydrogen atoms
MonoBasic has 1 Replaceable Hydrogen atom
Di Basic has 2 Replaceable Hydrogen atoms

So each one would have a different Molecular weight

Do that help any more

We have been thinking of purchasing a Microwave for the prep room. But on reading that they do not sterlize agar plates. Has any one else heard this one??????????

From the CSIS Voleume 2 appendices page 38 Ammonium Dihydrogen Phosphate is a mineral nutrient for yeast culture media. It is also known as Ammonium Dihydrogen Orthophosphate Ammonium biphosphate, & Ammonium phosphate Monobasic, Cas No 7722-76-1. So perhaps these names where once used. Hope this...

Any one needing a lift from Hoxton Park, Hinchinbrook area. I have one space left in our car. We car pool. Going both days Thurs & Friday.

sorry forgot to add, x-rays in glass windows can be interesting. They only last about a term in summer then they go hard and crack up. A bit like me. Photo's of experments that have been done. Some times doctors rooms, throw out posters of Lungs etc, could always ask?? I think that is all for now.

Frog's lizards, snakes in persertives in a jar, also seems also bring the students to the glass cabnet to look see. These cabnets are locked, so we do not seems to have any thing go missing. Dried flowers cut or pressed ( although they dry out) do add a little interest. Their are some really good po...

So far so good. Remove the drying trays from the oven while still hot, and with forceps, place the strips in a air tight wide neck jar, amber glass is better, with a good lid. Put some Silica in the bottom, Blue & Pink beads, they will help keep the Moisturiser out of the Cobalt Chloride paper. ...

WE do not have a microwave oven in our prep room. I also hate pressure cookers. So do not sterlize my agar plates.

Try soaking them in diluted HCL. WHen the students have experiments and they use HCL, I just put it in a large 2.5 bottle, labeled unknown CONC. HCL USED FOR CLEANING . I top it up with what ever HCL is left in beakers etc. And I use this HCL on hard stains, fill the test-tube up or beaker, bottle, ...

Perhaps a search in Chemtalk, may enlighten you. Junket, was taken off the shelves at one time. Junket can now be purchased at Health Food stores, Naturopaths, IGA Supermarkers. I have a fryer, should you wish to have a copy.

Please let me have your fax number.

I would suggest you put that glass container in the waste collection, to be picked up at a later date. Just label it with the contents. Our bible in NSW does not have Uranyl Nitrate in it, so I can not help you. HCL should be Neutralised first with Sodium Bicarbonate, then Dilute Down Sink to waste....

Yes thanks Robb, WHat would we do with out you

I have always put sulfuric Acid in our Copper Sulfate, I believe it keeps it longer. Or perhaps I have got it mixed up a little. Copper Sulfate pentahydrate has a much longer shelf life. But putting Acid into must do some thing else.

Hurry up Robb we need you

I also would like a copy of egg & pepsin experiment.

Our fax is 02 9823 7662 attn Sue in Science please

Thank you so much

What a great idea, it could just work. Well done

The head teacher before: purchased CASIO data loggers, the books had gone missing, along with a few pieces. When we rung CASIO up for help, well it just did not appear. No one could come out to help, NO information could be faxed to us. On checking at our local network meeting, 20 labbies, 15 said t...

Yes Ian's, problem is with the COMPUTER, not Data Harvest. They are very good, and simple to use.