Search found 333 matches
- 20 Aug 2020, 10:14
- Forum: Recipes and Pracs
- Topic: Best M.W. information
- Replies: 10
- Views: 6350
Re: Best M.W. information
If in doubt, make your own calculations using the molecular weight of the chemical. I have to rush off to a meeting now but I'm sure someone else can explain. Once you do this, you'll wonder why you ever had to look it up! :thumbup: Yes i know how to do this but even these are different on differen...
- 20 Aug 2020, 10:00
- Forum: Recipes and Pracs
- Topic: Best M.W. information
- Replies: 10
- Views: 6350
Best M.W. information
OK i am doing up a new information booklet for the common chemicals i use at school. This is just for myself for making up solutions of my common chemcials. So many sites have different information on them for the strength of chemicals. What is the best site to get accurate information. Even between...
- 10 Aug 2020, 08:58
- Forum: Chemistry and Labware - General
- Topic: Gratnell Storage system
- Replies: 2
- Views: 2626
Re: Gratnell Storage system
I absolutely love mine. My whole chemical store room in made of Gratnell shelving and drawers. So easy to adjust height with different size containers. So good for dropper bottles and solutions.
Ill add some photos after.
Ill add some photos after.
- 28 Jul 2020, 14:47
- Forum: Biology, Physics...
- Topic: Phenolphthalein Agar
- Replies: 175
- Views: 105947
- 28 Jul 2020, 13:47
- Forum: Biology, Physics...
- Topic: Phenolphthalein Agar
- Replies: 175
- Views: 105947
Re: Phenolphthalein Agar
i know this is a old old post but i have just came across a great idea of how to prepare the squares for the diffusion experiment.
K mart have silicone ice-cube molds that are perfect for the 3cm square cubes then students can cut another one down to get a 2cm square and 1cm square.
K mart have silicone ice-cube molds that are perfect for the 3cm square cubes then students can cut another one down to get a 2cm square and 1cm square.
- 28 Jul 2020, 08:49
- Forum: Recipes and Pracs
- Topic: Melting Phenolphthalein Agar
- Replies: 7
- Views: 4672
Re: Melting Phenolphthalein Agar
This is also a way that you can do the diffusion Agar 1. Measure out 1.6 g of agar-agar and 200 ml water. Mix them together with a whisk or fork in a large microwave-safe bowl. 2. Heat the solution in the microwave on high for 30 seconds. Remove to a heat-safe surface using a hot pad or oven mitts, ...
- 01 Jul 2020, 08:50
- Forum: Chemistry and Labware - General
- Topic: Plastic dropper bottles
- Replies: 6
- Views: 4895
Re: Plastic dropper bottles
We use a mixture of both glass and plastic dropper bottles. The only chemical that is a must for me with the amber glass bottles is Silver Nitrate and Iodine Solutions. '
I have got my plastic bottles from both MTA and Westlab.
I have got my plastic bottles from both MTA and Westlab.
- 29 Jun 2020, 13:28
- Forum: Recipes and Pracs
- Topic: Potassium Iodide
- Replies: 6
- Views: 3868
Re: Potassium Iodide
maybe it is Iodine (Potassium Iodide)
- 24 Jun 2020, 11:04
- Forum: Recipes and Pracs
- Topic: blood- splatter and skin safe
- Replies: 4
- Views: 3389
Re: blood- splatter and skin safe
Fake Blood Recipe
175 g Cornflour
75 ml Water
175 ml Golden Syrup
Red food colouring
Green food colouring
Mix cornflour and water
Add golden syrup
Add the red and green food colouring (you will need to play around with quantities or these until you get the desired colour).
175 g Cornflour
75 ml Water
175 ml Golden Syrup
Red food colouring
Green food colouring
Mix cornflour and water
Add golden syrup
Add the red and green food colouring (you will need to play around with quantities or these until you get the desired colour).
- 23 Jun 2020, 11:51
- Forum: Recipes and Pracs
- Topic: Esters
- Replies: 7
- Views: 4231
Re: Esters
My question to that Kimmy is, has anyone been able to source the decanoic acid? I'm either having a bad senior moment or I am just useless, but none of my regular suppliers have this... :crazy: :crazy: :crazy: Mine is older stock but still fine to use. I think it came from either Chem Supply or Ser...
- 22 Jun 2020, 13:21
- Forum: Recipes and Pracs
- Topic: Esters
- Replies: 7
- Views: 4231
Esters
Our Senior chemistry are doing the Preparing artificial fragrances and flavours experiment.
Has anyone made the salicylic acid or the decanoic acid stock solution.
Any recipes would be great - thanks in advance.
Has anyone made the salicylic acid or the decanoic acid stock solution.
Any recipes would be great - thanks in advance.
- 15 Jun 2020, 11:06
- Forum: The Lab Tech Position
- Topic: What is the name of your roles
- Replies: 14
- Views: 12848
Re: What is the name of your roles
i go under so many different name but basically as far as i am concerned i am simple the Science Assistant. On all paper work to do with the school i am a SAO (School admin Assistant). Some days when making up electrical wires etc i feel like i am a electrician, than the next day making Agar Plates ...
- 05 Jun 2020, 09:34
- Forum: Miscellaneous
- Topic: Policies
- Replies: 15
- Views: 9908
Re: Policies
Never heard of a Dissection Policy?
Have any other schools got one of these?
Have any other schools got one of these?
- 01 Jun 2020, 11:36
- Forum: Miscellaneous
- Topic: Anniversary
- Replies: 6
- Views: 7851
Re: Anniversary
Have learnt so much from all the wonderful members.
- 01 Jun 2020, 08:59
- Forum: Miscellaneous
- Topic: Anniversary
- Replies: 6
- Views: 7851
Re: Anniversary
Happy Anniversary to me today.
Joined on 1st June 2006.
Thanks for all the advice and great quick tips that we have all shared over the years.
Joined on 1st June 2006.
Thanks for all the advice and great quick tips that we have all shared over the years.
- 25 May 2020, 11:09
- Forum: Chemistry and Labware - General
- Topic: supplies
- Replies: 1
- Views: 2474
supplies
I am not sure where i got this from, or who sent it to me but it is great. :clap3: Iv added a few of the suppliers we use here to the list also. It is just a simple spreadsheet with names of suppliers and what they sell and contact details. Thank you who ever gave me the original of this, but i just...
- 03 Apr 2020, 13:44
- Forum: Recipes and Pracs
- Topic: Home Experiments
- Replies: 4
- Views: 5628
Re: Home Experiments
Endoterm reaction using citric acid, Acid base indicator using red cabbage, spaghetti, bicarbonate & lemon, bouncing ball using raw egg & vinegar, etc most of our kids would not have this stuff at home and we are trying to work on some simple experiments that kids will have the stuff at hom...
- 01 Apr 2020, 10:35
- Forum: Recipes and Pracs
- Topic: Home Experiments
- Replies: 4
- Views: 5628
Home Experiments
Now most of us are down to only a few students turning up at actual school and google classrooms now is what seems to be happening. We had our video link up science meeting this morning and i mentioned we need to actually get the kids off the computer for a bit. All lessons are basically now compute...
- 06 Mar 2020, 12:38
- Forum: Safety with Chemicals
- Topic: Banned Chemicals
- Replies: 8
- Views: 7259
Re: Banned Chemicals
I have just looked at this site and the banned chemical list that is there, and if you go to the bottom of that list (after Z) it says the list was last updated 0n the 19/2/2020. So I don't think it is dark ages stuff. Thanks for the link Mel. It will be quite useful. I've already put it on my favo...
- 05 Mar 2020, 09:45
- Forum: Safety with Chemicals
- Topic: Banned Chemicals
- Replies: 8
- Views: 7259
Re: Banned Chemicals
Hi Kimmy, Try this link: https://education.nsw.gov.au/asset-management/chemicals/appendices-to-volume-2/appendix-h-chemicals-which-are-banned-from-government-schools Sorry anyone not in a DoE school, the list is way too long to paste here... Hope it helps, Mel Thank you, that is the one I have but ...