Search found 298 matches

by Kathryn
09 Apr 2019, 11:21
Forum: Sourcing Materials & Eq Repairs
Topic: pressure cooker
Replies: 3
Views: 1228

Re: pressure cooker

Even the cheapest autoclaves are way beyond our budget atm. Currently we just toss used agar plates but now that they are starting to use far more, I would prefer to have better practice. Any pressure cooker will be better than nothing.
by Kathryn
08 Apr 2019, 10:18
Forum: Sourcing Materials & Eq Repairs
Topic: pressure cooker
Replies: 3
Views: 1228

pressure cooker

Hi everyone,
Pressure cookers were discussed a few years back but I am wondering if anyone has bought one recently for sterilizing agar plates? If so, what brand have you bought and is it good?

Thanks in advance

Kathryn :)
by Kathryn
06 Mar 2019, 10:18
Forum: Recipes and Pracs
Topic: Osmosis and diffusion
Replies: 23
Views: 3857

Re: Osmosis and diffusion

Good morning. My teacher has always asked for litres of iodine solution to pour straight into the beakers containing the starch dialysis tubing. Of course when I make up the iodine as per the recipe it is far too dark so then have to dilute. Should she actually just be adding a few drops of iodine f...
by Kathryn
13 Feb 2019, 10:15
Forum: Safety with Chemicals
Topic: storage of corrosives
Replies: 3
Views: 1253

storage of corrosives

Hi all I have one cabinet to store corrosives. I attempt to separate by shelves the acids and bases. I also have iodine in there (double bottled in sealed plastic bags). However I am still finding that all my labels get stained brown - they would become unreadable if I left them. Is it the iodine ca...
by Kathryn
30 Jan 2019, 10:48
Forum: Sourcing Materials & Eq Repairs
Topic: Laboratory Equipment poster
Replies: 1
Views: 1205

Laboratory Equipment poster

Happy New Year Everyone

Does anyone have a supplier of a good poster of basic laboratory equipment - suitable for Yr 7's? I have found a good one at Mentone but they are charging as much for the postage as for the poster itself, so I am hoping to find a cheaper source.

Kathryn
by Kathryn
12 Nov 2018, 11:23
Forum: Chemistry and Labware - General
Topic: Water purifier - deioniser etc
Replies: 25
Views: 5550

Re: Water purifier - deioniser etc

Thanks for that - that website explains it well.
by Kathryn
01 Nov 2018, 11:34
Forum: Chemistry and Labware - General
Topic: Water purifier - deioniser etc
Replies: 25
Views: 5550

Re: Water purifier - deioniser etc

Could you let me know where you got your Air Still from?
Thanks
by Kathryn
01 Nov 2018, 11:33
Forum: Biology, Physics...
Topic: electrophoresis kits
Replies: 7
Views: 3158

Re: electrophoresis kits

Our chambers were from Southern Bio. They can only hold one gel at a time. I don't know if they sell another option. The Stemreactor chambers can hold about 6? gels at a time.
by Kathryn
01 Nov 2018, 11:24
Forum: Sourcing Materials & Eq Repairs
Topic: Lab designs
Replies: 6
Views: 1822

Re: Lab designs

Great information but does anyone have any actual experience with the epoxy?
by Kathryn
31 Oct 2018, 11:48
Forum: Sourcing Materials & Eq Repairs
Topic: Lab designs
Replies: 6
Views: 1822

Re: Lab designs

We will be installing a new mini lab in an existing classroom. My HOD has asked if anyone on here has advice as to what material the sink should be made from - has anyone used the epoxy sinks?
Thanks
Kathryn
by Kathryn
31 Oct 2018, 11:42
Forum: Biology, Physics...
Topic: electrophoresis kits
Replies: 7
Views: 3158

Re: electrophoresis kits

We already had the chambers, but we bought the power pack, agarose and buffer from Stemreactor. We found them excellent to work with. Jeanette came down to give a workshop to our HOD. We used it for Yr7's, Yr 10 & Yr11's during Science week. The teachers found it easy to use and the students were ve...
by Kathryn
30 Oct 2018, 14:12
Forum: Sourcing Materials & Eq Repairs
Topic: ferric thiocyanate
Replies: 2
Views: 1229

ferric thiocyanate

Hi all
My chemistry teacher is wanting me to purchase ferric (or iron) thiocyanate. Our usual sources do not stock it and it is not even showing up on Chemsupply. Does anyone else have to get this? Apparently it is in the new curriculum.

Kathryn :unsure:
by Kathryn
30 Oct 2018, 14:07
Forum: Chemistry and Labware - General
Topic: Water purifier - deioniser etc
Replies: 25
Views: 5550

Re: Water purifier - deioniser etc

Hi Bigmack
So does distilled water pick up CO2 more easily that tap water? Tap water always has a pH closer to 7 than our bottled water.
by Kathryn
25 Oct 2018, 12:14
Forum: Chemistry and Labware - General
Topic: Water purifier - deioniser etc
Replies: 25
Views: 5550

Re: Water purifier - deioniser etc

We have been using purchased "pure" water for some time after our reverse osmosis unit gave up. However we have found the pH of the bottled water is always low (eg between 5-6 and lower than tap water). I wonder if although it may be pure when it is bottled, it absorbs contaminates while it is store...
by Kathryn
15 Oct 2018, 08:48
Forum: Announcements
Topic: Welcome back everyone to chemtalk
Replies: 26
Views: 5056

Re: Welcome back everyone to chemtalk

Thanks Westlab. Really appreciate our Chemtalk forum. I've used it heaps over the years and it is good to still be able to access older information as well.