Australia's Science Forum

Hi Guys, any suggestions for equipment repairs? As most of my things like microscopes and power packs are from Serrata I usually get them to repair anything that gets broken, located NSW Central Coast MariaQ

Yes please!!! If possible maria.caira@cccgs.nsw.edu.au

MariaQ

Just a heads up cobalt chloride solid in teacher only according to RissAssess, and only the most dilute solutions are suitable for student use, therefore we no longer use it in crystal gardens. Suspected of causing cancer and infertility, not something I want for our students :w00t: , well maybe one...

I bought some chemicals from Silform, and found they were a lot lower grade, especially the magnesium ribbon, I probably wont buy from them again. MariaQ

I agree Merilyn!, I rarely refer to it now, but I have a new part time lab tech and I thought before I show her the old one, Id see if there was a new one! We use Riskassess, Science Assist and any other more up to date info I can lay my hands on. CSIS does however give a good beginners guide to saf...

I always use gelatin

Hi All,

Im just wondering, does anybody know the status of the NSW DET CSIS package? Has it been updated? Im in a NSW AIS school and I want to know so I can get the AIS to chase up the new version if available.

Cheers MariaQ

Yep I discovered this yesterday!

No lab coats here, students tuck their ties in and hair is tied back, but 99% sensible students. I do have disposable aprons for the larger dissections. We have never had a problem.

Maria

Hi Guys,

My partime labbie is off to new adventures so looking for a new partner in crime, please see link. Great staff and school

https://www.ccgs.nsw.edu.au/sites/defau ... time_0.pdf

Cheers Maria

Hi, I did a quick google and this came up, looks like just tripods with beakers and plastic filter funnels, maybe use microscope lamps if you still have them?? All equipment we already have? https://www.researchgate.net/figure/Berlese-Tullgren-funnel-for-micro-arthropods-extraction-It-contains-a-sam...

Hi Kimmy, from my understanding, thats just a straight forward titration, not a back titration. Cheers M

Hi Guys,

Its where you cant titrate one substance directly against another, so you react A with B in excess and then titrate residual B against C and calculate the amount of A by working out how much of B was used in the first reaction! Hope that makes sense!

Hi All,

My teachers are looking at doing a back titration, any tried and tested methods out there you are willing to share??

Hi Bigmack, I agree when I got the teats they were a bit small for some tops and could easily be pulled out of the teat hole, so definitely not a universal size. And like yourself, over a few months have already found a number starting to perish, so in many ways would prefer to go back to the rubber...

Hi Guys,

Just wondering if anyone has used the specific gravity kit supplied with Ohaus Scout balances? I have followed all the instructions, and get to a certain point, but cant get it to actually weigh anything? anyone?? MariaQ

Westlab are also good, I compare with Serrata and buy the ones I want from the cheapest supplier.

Ok, thanks for that, I was looking at the upgraded one, we want to keep fairly constant temps.

MariaQ

Im looking at buying some of the nanoheat hotplates from Westlab, has anyone got any experience with these?? Cheers MariaQ

:D Hi All, Just wondering on this safety shower thread, I believe that they are also supposed to be tested and tagged once a year as per fume cupboards, which seems overkill in a school setting, I always think the standards are written for industrial settings not schools were we have very small amou...