Search found 68 matches

by Milo
22 Jul 2022, 12:30
Forum: Recipes and Pracs
Topic: Open Day Ideas
Replies: 87
Views: 50995

Re: Open Day Ideas

I'm in need of Open Day ideas in a new job without access to my old resources, so could someone send me this booklet please?
Anthony.Wise@acu.edu.au
by Milo
31 Mar 2022, 14:15
Forum: Safety with Chemicals
Topic: Risk Assessment
Replies: 44
Views: 13934

Re: Risk Assessment

I'd start by getting the head teacher on board with it, it's then easier to get the others to do it with that support. Emphasise that it's a legal requirement and will cover them in case anything ever goes wrong.
by Milo
17 Feb 2022, 14:55
Forum: Sourcing Materials & Eq Repairs
Topic: Sourcing of frozen rats
Replies: 35
Views: 13771

Re: Sourcing of frozen rats

We buy ours from a local reptile-focused pet shop. They're frozen and intended as food for snakes but happy to sell to a school for dissection, and they're relatively cheap. So it's worth checking pet shops near you.
by Milo
05 Aug 2021, 10:04
Forum: Sourcing Materials & Eq Repairs
Topic: gloves
Replies: 13
Views: 3824

Re: gloves

I got some 200 boxes from Winc (stationery supplier) recently.
by Milo
16 Jul 2021, 12:05
Forum: Chemistry and Labware - General
Topic: electrolysis of water
Replies: 8
Views: 3237

Re: electrolysis of water

Hmm that's odd! Try turning up the voltage, or cleaning the electrodes?
by Milo
16 Jul 2021, 12:03
Forum: Chemistry and Labware - General
Topic: POTASSIUM PERMANGANATE CRYSTALS
Replies: 1
Views: 1227

Re: POTASSIUM PERMANGANATE CRYSTALS

I've also had teachers ask for these larger crystals for diffusion demos, and struggled to find a good source. Having bought the Gold Cross brand from a chemist, I found them still to be fine flakes, and not any better for this.
by Milo
12 Jul 2021, 15:43
Forum: Chemistry and Labware - General
Topic: electrolysis of water
Replies: 8
Views: 3237

Re: electrolysis of water

It needs some ions I think, for conductivity. We use 6% sulfuric acid in our voltameter.
by Milo
18 Jun 2021, 15:32
Forum: Sourcing Materials & Eq Repairs
Topic: where to buy?
Replies: 6
Views: 2409

Re: where to buy?

Do you mean the caps with holes in them? Companies that sell the cap/teat/dropper combo might be willing to send you just the cap if you ask them. Otherwise I can see solid caps for those bottles at Haines. I see what you mean about the brushes, it's hard to find ones with cotton ends. But Southern ...
by Milo
10 May 2021, 10:12
Forum: Biology, Physics...
Topic: Phenolphthalein Agar
Replies: 175
Views: 84709

Re: Phenolphthalein Agar

As documented in this thread I bought a microwave solely for use in Science prac prep! Whenever I have to deal with agar I feel very appreciative that I have it.
by Milo
07 May 2021, 14:56
Forum: Biology, Physics...
Topic: Phenolphthalein Agar
Replies: 175
Views: 84709

Re: Phenolphthalein Agar

If you remelt it and put it in a bottle it will last until next year!
by Milo
29 Apr 2021, 10:01
Forum: Recipes and Pracs
Topic: Help!! Meat tenderiser alternative
Replies: 27
Views: 5942

Re: Help!! Meat tenderiser alternative

I went looking everywhere for meat tenderiser last year, and couldn't find it in any of the big supermarkets or smaller shops. I guess it's just gone out of fashion. I did eventually find some at my local Supa Express (Supa Barn), which works. It has added spices but that only affects the smell I th...
by Milo
05 Mar 2021, 14:18
Forum: Safety with Chemicals
Topic: LEAD NITRATE
Replies: 34
Views: 14890

Re: LEAD NITRATE

We did an early trial to make sure it worked, and there was indeed a bright, immediate reaction between potassium iodide 0.1M and lead nitrate 0.002M. Perfectly viable in my view. :)
by Milo
05 Mar 2021, 13:22
Forum: Safety with Chemicals
Topic: LEAD NITRATE
Replies: 34
Views: 14890

Re: LEAD NITRATE

We swapped out our dropper bottles for 0.002M solutions. Precipitation pracs are next week so I'll report back if they work.
by Milo
13 Nov 2020, 08:54
Forum: Safety with Chemicals
Topic: Gloves
Replies: 5
Views: 2979

Re: Gloves

I've been getting them at Haines recently. A bit more expensive than Officeworks but good quality.
by Milo
04 Sep 2020, 15:21
Forum: Biology, Physics...
Topic: Phenolphthalein Agar
Replies: 175
Views: 84709

Re: Phenolphthalein Agar

Yes it's in the prep room, which directly adjoins the Science office. For now I've just written on it in texta, need to get around to making a sign.
by Milo
04 Sep 2020, 12:55
Forum: Biology, Physics...
Topic: Phenolphthalein Agar
Replies: 175
Views: 84709

Re: Phenolphthalein Agar

Indeed it does. I ended up buying a new microwave for us last week! Now I just need to make sure nobody uses it for their lunch...
by Milo
27 Aug 2020, 10:02
Forum: Biology, Physics...
Topic: Phenolphthalein Agar
Replies: 175
Views: 84709

Re: Phenolphthalein Agar

It's my time of year to do this again. Last year I saved the leftovers for the first time, and it seems to have kept well in the fridge. For any others that do this, what method do you use to re-melt the agar for pouring? I'm reluctant to use the microwave method since we don't have our own science ...
by Milo
18 Jun 2020, 15:40
Forum: Chemistry and Labware - General
Topic: Cleaning carbon rods
Replies: 5
Views: 4089

Re: Cleaning carbon rods

There's an old thread right here that has a few suggestions! http://www.chemtalk.com.au/viewtopic.php?f=42&t=1979&p=43583&hilit=electrode#p43583 Nitric acid works, but will need to be done in a fume cupboard. Bigmack's method works for cleaning rusty electrodes, not sure about removal of...
by Milo
18 Jun 2020, 15:28
Forum: Recipes and Pracs
Topic: blood- splatter and skin safe
Replies: 4
Views: 3083

Re: blood- splatter and skin safe

We did a a fake blood activity a couple of years ago, although it was more "making fake wounds" than blood splatter. I asked the drama teacher what they used for this, and if I recall correctly their method used chocolate topping and red food colouring; if you want it thicker you can add c...
by Milo
13 Feb 2020, 09:46
Forum: Recipes and Pracs
Topic: Gel electrophoresis
Replies: 7
Views: 7046

Re: Gel electrophoresis

We get the Carolina kits which have everything you need included in them. They also include proper DNA samples so it can get expensive. It's possible to do it with dyes etc. instead to bring the cost down.