Search found 680 matches

by Merilyn1
11 Sep 2019, 11:46
Forum: Recipes and Pracs
Topic: Limewater
Replies: 46
Views: 2736

Re: Limewater

Slightly different here but I do the same as Sunray and Wayne mentioned (from years ago). So I have a stock solution which is what I have made using the instructions in The Laboratory (also previously mentioned) and I have one or two working solution bottles. I carefully pour the liquid from the sto...
by Merilyn1
21 Aug 2019, 10:27
Forum: Sourcing Materials & Eq Repairs
Topic: Sourcing zinc strips
Replies: 8
Views: 412

Re: Sourcing zinc strips

How do you think I knew!!
by Merilyn1
21 Aug 2019, 10:26
Forum: Miscellaneous
Topic: Happy STAR week
Replies: 4
Views: 523

Re: Happy STAR week

This was my desk on Monday morning. I'm still finding stars in all sorts of places - drawers, under prac tubs, in my diary. It was pretty funny.
by Merilyn1
20 Aug 2019, 12:41
Forum: Sourcing Materials & Eq Repairs
Topic: Sourcing zinc strips
Replies: 8
Views: 412

Re: Sourcing zinc strips

Just be careful when cutting - it is really, really sharp (as any of the metal sheets).
by Merilyn1
15 Aug 2019, 14:33
Forum: Announcements
Topic: Will you be the lucky winner of the Golden Ticket?
Replies: 21
Views: 1010

Re: Will you be the lucky winner of the Golden Ticket?

And not every school, either!
by Merilyn1
15 Aug 2019, 07:41
Forum: Announcements
Topic: ASET conference
Replies: 11
Views: 1575

Re: ASET conference

Got the OK from my coordinator, registered and now waiting on "official" approval. Looking forward to it!
by Merilyn1
12 Aug 2019, 15:31
Forum: Safety with Chemicals
Topic: Disposal of Sodium Thiosulfate?
Replies: 14
Views: 1543

Re: Sodium thiosulfate

I'm confused!! ! Needed to label some more Sodium thiosulfate containers. Prevously to subscribing to Riskassess, I've used Chemwatch. Riskassess says "not classified as hazardous", blue dot etc However Chemwatch lists it with "warning' and ' toxic to aquatic life'. Interested in any comments Go wi...
by Merilyn1
07 Aug 2019, 15:24
Forum: Recipes and Pracs
Topic: Open Day Ideas
Replies: 66
Views: 7220

Re: Open Day Ideas

Yes, I was looking at the toothpick stars for next week. We need to substitute one of the pracs that didn't work well and I saw that one. Given that Science Week seems to have crept up on us this year, I'm looking for a simple alternative. I'm hoping the teachers think it is okay! Now to try to conv...
by Merilyn1
01 Aug 2019, 07:37
Forum: Sourcing Materials & Eq Repairs
Topic: Chemical quality
Replies: 5
Views: 357

Re: Chemical quality

I only buy the LR grade, unless there is nothing else available. I would suspect it is the quality of the brand. I would send the photos to the supplier and question them about it. I've only known zinc sulfate to be a clear solution. Oh, and often, I get crystals or powder for the same chemical. So ...
by Merilyn1
30 Jul 2019, 12:25
Forum: Safety with Chemicals
Topic: Updated CIS Package???
Replies: 5
Views: 474

Re: Updated CIS Package???

Good thinking. Yes, it will get a new person out of trouble as long as they avoid the chemical classification section. Disposal of chemicals is also a bit dodgy and I suspect is also long out of date. It is a shame that it has been forgotten about for so long as it could be a good resource for new l...
by Merilyn1
30 Jul 2019, 10:35
Forum: Safety with Chemicals
Topic: carbon snake disposal
Replies: 6
Views: 320

Re: carbon snake disposal

I learnt by "experience" - a bad one at that! :yuck:
by Merilyn1
30 Jul 2019, 10:32
Forum: Safety with Chemicals
Topic: Updated CIS Package???
Replies: 5
Views: 474

Re: Updated CIS Package???

Hi Maria Might be worth talking to your supervisors about how much weight they want to put on CSIS as I'm not sure if any of the updates are available to independent schools. About the only thing we use from CSIS these days is the coloured dot system and the training codes - but these things have al...
by Merilyn1
30 Jul 2019, 07:45
Forum: Safety with Chemicals
Topic: carbon snake disposal
Replies: 6
Views: 320

Re: carbon snake disposal

I leave it in the fume cupboard (with the fan running) overnight before handling it. But, otherwise, yes, rinsing and wrapping in newspaper sounds good.
by Merilyn1
05 Jul 2019, 12:21
Forum: Sourcing Materials & Eq Repairs
Topic: water bath
Replies: 9
Views: 1032

Re: water bath

Honestly, I think setting the timer on the VHS recorder was easier than operating that hot plate! :cheesy: Funny stuff Merilyn ....needed a good laugh today And remember how many times you thought you had it right, only to find you had either recorded the next program, or worse, not recorded the la...
by Merilyn1
05 Jul 2019, 07:40
Forum: Sourcing Materials & Eq Repairs
Topic: water bath
Replies: 9
Views: 1032

Re: water bath

Hi Ian
Try emailing Robyn. The instructions were stored with the one they have there - although that's a couple of years ago now. Have you tried doing an internet search?
Honestly, I think setting the timer on the VHS recorder was easier than operating that hot plate!