Australia's Science Forum

Yeah it stinks , not so sure about the rotton milk .
To me it smells like fish but with a strong ammonia smell ....that's probably the pissy nappy smell

Its a bit strange here too . I'm not getting what you are though.

Printing a Label from a Chemgold MSDS works fine but can't print labels from Vendor MSDS...just a box saying Chemwatch haven't assessed them or the likes .Tried many and all the same

Yes we have it
Manganese (IV)oxide = Manganese Dioxide is Yr7-12

Manganese(VII) Oxide = Manganese heptoxide is banded according to my hardcopy of CSIS

If you are throwing the image straight to a Data projector then the resolution does not need to be very high . Consider that most schools still have 600 x 800 resolution projectors ...that's just under 0.5 Mega pixals Even a HD projector with a 1080 x 1920 resolution will be a fraction over 2 Mega p...

Thanks :thumbup: Looks like we might give the Tork stuff ago as OfficeMax is our normal purchase place for this type of stuff . Interesting point about WHS aspect and being an administrative funded product ...never thought of that , will check who pays for it .....this is not my area but my offsider...

My off sider is distressed because he can't buy the paper towel he has always had .( bought the last 50 rolls many years ago)

So we got some from Office max to trial and now they don't stock that type .

Wondering what you all use and were you buy it , product codes ?

1% solution

We use the Aqueous Iodine as you posted . I had one teacher complain too . Turns out they were using a 600mL beaker full of water and adding a few drops of Iodine solution . When I tipped half the water out and poured in the Solution so it was a light brown colour , they gasped .....moments later th...

1) Get a thin disc of non-ferrus metal ( copper or Aluminium about 70-100mm in Diameter ) ....Note if you used a steel disc it will stick to the Magnet Put a dint exactly in the middle and balance it in a nail point in a piece of wood . 2) Stick one of those little super magnets to the end of a penc...

J wrote: I wipe everything down with 70% ethanol with 30% water.

melsid wrote:We use a 70% ethanol solution too...

Do you guys use Metho or Fancy Ethanol ?

Call Chemwatch on (03) 9573 3157 . They should be able to help you recover what is there . They are very helpful When they ask for your account , assuming you are a DoE school then your the account will be decXXXX where XXXX is your school number . Little changes from year to year so probably most o...

Harvey , maybe Ocker is referring to separating the PCB from the front panel in a 2633-001. Here's one I had to repair. On taking the covers off the first thing that alarmed me was that the insulation card board ( prespahn) was not installed correctly. :club: The way it was positioned provided no pr...

That seems crazy .I just had to do Chem stocktake for whole school ......that's another story :whistling2: I am sure the fireys would want to know about the half full 25 liter drum of petrol in the GA's fuel cupboard and the acetylene bottles in metalwork and Automotive rooms . What about the half e...

Melded I've had two do that . One was shorted rectifier diodes and the other shorted OVP zener diodes. You can buy the bits from IEC . Being a TV tech I found it no biggy to fix but you will need a good soldering iron and solder sucker .......and about an hour. But we are probably not allowed to :-(...

How tight the screw is done up is important. Too loose and the wire will pull out . Too tight and the screw will cut into the wires severing them as opposed to "biting " into them to make a connection...this causes the remaining strands to brake when tugged on . It is good to fold the stri...

Xenon wrote:I put a magnetic stirrer in a beaker of water and mix for about 20 minutes.

Would have thought that might Oxygenate it . ...I know guys do this with yeast to quickly build up a culture

I spotted this mystery piece in the cupboard in the Physics Lab . It has plagued me for nearly 2 years . :crazy: I have even seen one at another school and asked the seasoned Labbie if they knew.what it was [-o< ....."how should I know" :cheesy: ," the only bloke that probably knew di...

Well that makes more sense Elizabeth .
But as a DoE school are we in our rights to trust what RiskAssess says or are we still bound to interpret the CSIS as best we can .
I'm still thinking about RiskAssess but if we can't be guided by it ( due to having CSIS ), is there any point .

Ours is Orange Dot also . 0.1M is 8g per Liter ( according to my recipe book ) so it is less than 5% solution .....Good question Kathryn ...I can't see any reason why ours is an orange Dot other than there is nothing that specifically says <5% can be a Green Dot . To my simple mind Non hazardous wou...

It really is silly labbie . next on the list calcium sulphate ....again nearly every supplier has it as non hazardous but chemwatch has a warning on it and several supplier MSDS link to the chemwatch SDS . I realise we must obey the CSIS , but I thought that DoE schools had to use chemwatch , hence ...