Search found 225 matches

by Anna Z
20 Nov 2023, 12:07
Forum: Biology, Physics...
Topic: testing for microbes
Replies: 4
Views: 5728

Re: testing for microbes

I'd be going with what @melsid said... perfect
by Anna Z
14 Nov 2023, 12:59
Forum: Safety with Chemicals
Topic: nickel sulfate
Replies: 11
Views: 14412

Re: nickel sulfate

We are actually in the process of removing it from the school, have found other reagents and/or pracs that demonstrate the same thing. Nickel ... nasty Hazardous to the Aquatic Environment - Acute Hazard: Category 1 Hazardous to the Aquatic Environment - Long-Term Hazard: Category 1 Carcinogenicity ...
by Anna Z
09 Nov 2023, 08:15
Forum: Chemistry and Labware - General
Topic: Free elements sets for schools
Replies: 30
Views: 19736

Re: Free elements sets for schools

You're a legend Stuart, thanks so much for your passion
by Anna Z
06 Nov 2023, 10:06
Forum: Chemistry and Labware - General
Topic: Free elements sets for schools
Replies: 30
Views: 19736

Re: Free elements sets for schools

Since these element sets are my babies, let me put up a few quick answers to some of the queries here. 1. Firstly, PLEASE look at the website (elementsets.net), and in particular, the Teachers' Notes available there (updated recently; these are different to the booklet contained in the set). These ...
by Anna Z
03 Nov 2023, 08:10
Forum: Chemistry and Labware - General
Topic: Free elements sets for schools
Replies: 30
Views: 19736

Re: Free elements sets for schools

I did have a thought afterwards. We put some mercury switches into these containers - tiny amount of mercury (so tiny, I couldn't really see the point). I decided to glue the lids shut and I had the casual use a really small dot of superglue to do so. That was twelve months ago and they are still f...
by Anna Z
03 Nov 2023, 08:08
Forum: Chemistry and Labware - General
Topic: White crystal around sodium hydroxide solution bottles
Replies: 14
Views: 9621

Re: White crystal around sodium hydroxide solution bottles

NicD wrote: 03 Nov 2023, 07:54 Is it safe to rinse the droppers in 1mol hcl to clean out the NaOH, and still use them in the NaOH. I think that they might be some wax in the droppers and bottles, i have tried washing in water to no avail
Yep, go for it
by Anna Z
02 Nov 2023, 10:54
Forum: Chemistry and Labware - General
Topic: Free elements sets for schools
Replies: 30
Views: 19736

Re: Free elements sets for schools

We have them set up in the display cabinet (all glass) similar to above with the teachers notes standing next to them, they are in the classroom so accessible for students and teachers. I do find them out during Yr 10 science. Make sure you glue the lids on..... and DONT use Super Glue it makes the...
by Anna Z
02 Nov 2023, 08:54
Forum: Chemistry and Labware - General
Topic: Free elements sets for schools
Replies: 30
Views: 19736

Re: Free elements sets for schools

We have them set up in the display cabinet (all glass) similar to above with the teachers notes standing next to them, they are in the classroom so accessible for students and teachers. I do find them out during Yr 10 science. Make sure you glue the lids on..... and DONT use Super Glue it makes the ...
by Anna Z
02 Nov 2023, 07:16
Forum: Chemistry and Labware - General
Topic: Free elements sets for schools
Replies: 30
Views: 19736

Free elements sets for schools

Hi all, just thought thought I'd stick this on here https://elementsets.net/. they are so cool and free.

Image
by Anna Z
01 Nov 2023, 09:31
Forum: Sourcing Materials & Eq Repairs
Topic: Dissolved CO2 Sensor
Replies: 2
Views: 7817

Re: Dissolved CO2 Sensor

Yes we use these all the time and have a class set. We used then on a regular basis for CO2 gas and probably 4 times per year for dissolved. So we only purchased 5 sleeves for our sensors. They are so easy to use and have very good repeatable results. If you have the cash, a good investment. You run...
by Anna Z
18 Oct 2023, 08:05
Forum: Chemistry and Labware - General
Topic: Safety data sheets
Replies: 10
Views: 9016

Re: Safety data sheets

We use the mini SDS's out on the carts in the class, works well. Teachers are more inclined to pick up a mini SDS than the full one
by Anna Z
13 Sep 2023, 08:36
Forum: Chemistry and Labware - General
Topic: GelRed Nucleic Acid Gel Stain
Replies: 4
Views: 4485

Re: GelRed Nucleic Acid Gel Stain

Very specific.... can you use a different stain ?. New England BioLabs would be the people I would contact. https://www.neb.com/en-au They also offer small samples so you could try.

GELRED® is a registered trademark of Biotium. https://www.gelredaustralia.com.au/
by Anna Z
08 Sep 2023, 14:09
Forum: Safety with Chemicals
Topic: empty bottle disposal
Replies: 3
Views: 5047

Re: empty bottle disposal

Only re-use once label has been removed
by Anna Z
25 Aug 2023, 09:14
Forum: Chemistry and Labware - General
Topic: Chemical disposal
Replies: 3
Views: 4829

Re: Chemical disposal

Excellent work, thanks for raising this. Just a good reminder to check everything . My biggest bill for waste was 2.5K one year and it was an epic clean out of old and nasty crap, 10 years of hoarding by previous staff ...... I think I'd die if I saw a 5K bill for a general clean out.
by Anna Z
22 Aug 2023, 08:05
Forum: Jobs Forum
Topic: Mat leave cover for 2024
Replies: 4
Views: 10654

Re: Mat leave cover for 2024

Congrats @MissKat
by Anna Z
14 Aug 2023, 12:09
Forum: Safety with Chemicals
Topic: Gas syringe explosion
Replies: 7
Views: 5884

Re: Gas syringe explosion

Marama T wrote: 14 Aug 2023, 11:58 Yeah we had them in those clamps meant to stop the plunger coming out - the explosion bent the clamp! It was seriously full on.
OMG !!
by Anna Z
14 Aug 2023, 11:54
Forum: Safety with Chemicals
Topic: Gas syringe explosion
Replies: 7
Views: 5884

Re: Gas syringe explosion

OMG !!!!! yes would never do a pop test with a gas syringe. Ours are used in the holders where they physically can't expel the plungers out all the way... for good reason as you've shown hey !!
by Anna Z
04 Aug 2023, 15:20
Forum: Sourcing Materials & Eq Repairs
Topic: refraction semi circles
Replies: 5
Views: 5172

Re: refraction semi circles

Science supply sell them but awaiting stock. Could you borrow them from another school whilst waiting on ordering them ?
by Anna Z
04 Aug 2023, 15:14
Forum: Safety with Chemicals
Topic: Disposal of chemical solutions
Replies: 9
Views: 7423

Re: Disposal of chemical solutions

Labbie wrote: 25 Nov 2015, 12:18 If you are a DEC school, your principal BY LAW must have a copy of the CSIS near his/her office. Photo copy the bit you need and keep it in the prep room.
NSW, but we use it for handy stuff also in VIC
by Anna Z
04 Aug 2023, 15:10
Forum: Safety with Chemicals
Topic: Disposal of chemical solutions
Replies: 9
Views: 7423

Re: Disposal of chemical solutions

KassH wrote: 04 Aug 2023, 11:34 Does anyone still use vermiculite for evaporation and disposal of chemicals?
We do for some things but use Kitty litter instead...way cheaper