Australia's Science Forum

It apparently can effect unborn babies . Not a problem for males but girls could be unknowingly pregnant and that it the problem .Some schools use it in juniour school where it it highly unlikely there are any girls of child bearing age . Female teachers should be made aware that although its a teac...

Hydrogen peroxide cleans permanganate stains off right before your eyes . Fizz fizz fizz . Only need 6% stuff. Pour it in the flask ,swish it around for a minute . Pour it into the next , swish it around etc etc etc . Only need about 50mls and will do maybe 1/2 dozen flasks easy HCl will sort rust l...

Hi Rosalie Yes you can just use plain Agar .It’s one of the beauties of the dye .No more expensive Agarose powder . Also yes I used Bicarb soda as the electrolyte but I can’t remember the concentration . I could find out for you though . As for the dyes , the set I got had a little sticker on them s...

Rowanne wrote: ↑10 Sep 2024, 11:33 I cant figure out how to post a picture or link sorry

Hi Rowanne .
Pictures are can be added cua attachments .

See this topic I created
viewtopic.php?p=48860#p48860

Goldfish bowls

I’ve never found volume marks to be that good on most flasks or beakers in the first place . They are probably still good to use for titrations at least .

OK I just did it .$33 flat fee freight.
$77.55 for 3x Buffer tablets (4,7,10) and Freight .

Thanks Rosalie.
That's a great price . Haven't checked freight yet , but surely can't be more than $25 Haines wanted .

We had those Grey shallow trays at old school to Rosalie . Apparently they were Photographic development trays . I couldn't find the original ones for Love nor Money but I did find some Newer ones .They all had a small pourer on one corner . I thought they looked strange but the Bio teacher said it...

Hi Labbies . I've just realized all our Sparkvue pH probes are well out of calibration. I have also realized that we have no pH4 buffer solution . I have also just realized that Buffer solution has a limited shelf life 12-18 months unopened and less than 3 months when opened . At old school we had b...

When I was worrying like heck about how dangerous these batteries were , I did a bit of googling . Yes there have been a few cases of batteries catching fire . I watched a professor who specialises in Lithium batteries and his opinion was that yup , they can catch fire . But it is very rare . About ...

At my last school I was ITC one day a week . I quickly realised that the batteries in most of our Chromebooks were swollen up so much they were bulging up the keyboards and the keys were actually flicking off . LOL ….. I naturally blamed the kids at first until I changed a few keyboards and found th...

I tend to agree with Merilyn .
When running , ours has such an up draft , I've given up ever using the Bunsen's .Was similar at my old school .
I'd be getting the extractor fan checked out .

I would think the condensation from being in the fridge would make it run worse? That was my thoughts too Peter. Although by the time I've buggered around getting it all back together , it's usually dried out :cheesy: Does anybody store their belts in the Fridge ? I ask because when I did my hand o...

Does anybody store their belts in the Fridge ? I ask because when I did my hand over day , the old Labbie told me the silicone belt for the Van De Graaf was in the Fridge and I should always remove it after use and put it back in the fridge . As you can imagine this is quite the PITA to do :whistli...

All good . Just to clarify . I wasn’t making esters . Hence I didn’t use a reflux condenser . I was just checking how fast it would come to the boil . I understand teachers only have so long to carry out a prac and if the lesson is over before the damn thing comes to the boil , it was all a waste . ...

Have just had a request for ammonium nitrate for "making an ice pack" practical. Seriously when are the companies that produce science textbooks and online textbooks going to get their act together. Why don't they know that ammonium nitrate is not available for school use. When are they g...

I had to try this to see how fast it would work First test . Just an equal amount of sand in two Pie dishes . 25ml Metho ( Ethanol) on the Left and 25ml of water on the right . Took 15 min before the Ethanol was boiling . Note the condensation is starting to form in the flask of water on the right ....

Card was topped up today , so gone shopping too LabTechBrooke .
They look good so fingers crossed .Thanks again for the heads up .

We had those Grey shallow trays at old school to Rosalie . Apparently they were Photographic development trays . I couldn't find the original ones for Love nor Money but I did find some Newer ones .They all had a small pourer on one corner . I thought they looked strange but the Bio teacher said it...

We had those Grey shallow trays at old school to Rosalie . Apparently they were Photographic development trays . I couldn't find the original ones for Love nor Money but I did find some Newer ones .They all had a small pourer on one corner . I thought they looked strange but the Bio teacher said it ...