Search found 219 matches
- 19 Jun 2023, 13:21
- Forum: Chemistry and Labware - General
- Topic: Using weight to find volume
- Replies: 3
- Views: 3633
Re: Using weight to find volume
I would imagine that for high school science either weight or volume would be accurate enough. This is where the % w/w or % w/v etc comes in. If you're weighing both it would be % w/w and if weighing the solid and measuring the liquid it would be % w/v. Mixing two liquids (eg Hcl) would be % v/v. H...
- 15 Jun 2023, 16:13
- Forum: Safety with Chemicals
- Topic: Victorian Gov Chemical Register
- Replies: 4
- Views: 4028
Re: Victorian Gov Chemical Register
No problem, if you want to do a video call send me a message and we'll set it up. You can share your screen and show me the issues if you haven't managed to get it sorted.
- 14 Jun 2023, 09:06
- Forum: Safety with Chemicals
- Topic: Victorian Gov Chemical Register
- Replies: 4
- Views: 4028
Re: Victorian Gov Chemical Register
For the Consequences/Likelihood, there is information on one of the tabs, it also says The level of risk can be assessed as per the directions below and in reference to Section 3.5.2 of the OHS Risk Management Procedure. Also, you will not find anywhere a column telling you what Consequences/Likelih...
- 13 Jun 2023, 16:16
- Forum: Safety with Chemicals
- Topic: Victorian Gov Chemical Register
- Replies: 4
- Views: 4028
Re: Victorian Gov Chemical Register
Make sure you have downloaded and working in Excel. If you are trying it in a google doc it won't work and you'll be in all sorts of pain. I also just downloaded the blank template to check it out... the first line does not work for some reason (as in picking the Risk ranking automatically) after yo...
- 09 Jun 2023, 08:41
- Forum: Safety with Chemicals
- Topic: Radioactive isotopes
- Replies: 17
- Views: 9328
- 07 Jun 2023, 15:50
- Forum: Safety with Chemicals
- Topic: Radioactive isotopes
- Replies: 17
- Views: 9328
Re: Radioactive isotopes
I'll pay you $20 towards beer for you...send them down here
- 06 Jun 2023, 11:03
- Forum: Safety with Chemicals
- Topic: Radioactive isotopes
- Replies: 17
- Views: 9328
Re: Radioactive isotopes
I believe the source sets that are available through our suppliers... when they are past their active date you can peal off the stickers and they can go in the bin.
We have not been given a directive to get rid of any of our sources.... all super safe anyway.
We have not been given a directive to get rid of any of our sources.... all super safe anyway.
- 31 May 2023, 08:57
- Forum: Safety with Chemicals
- Topic: face shields
- Replies: 4
- Views: 4758
Re: face shields
Oh my, what a disaster, glad it is going from your site. We also don't have it here. I have one of these with the appropriate filter for the nasties' I have onsite here. I can't remember the code off hand but I have a fine particulate canister and an acids or organics canister attached. You can mix ...
- 25 May 2023, 13:54
- Forum: Sourcing Materials & Eq Repairs
- Topic: Bromine
- Replies: 9
- Views: 4961
Re: Bromine
I would run it past head of science
- 25 May 2023, 09:12
- Forum: Sourcing Materials & Eq Repairs
- Topic: Bromine
- Replies: 9
- Views: 4961
Re: Bromine
You can get Bromine from Merck (very expensive for a once off demo), we only have the Bromine water on site... I have said 'no' to requests for anything different.
- 25 May 2023, 09:08
- Forum: Chemistry and Labware - General
- Topic: Burettes
- Replies: 2
- Views: 3263
Re: Burettes
Is all of them or just one or two ? Sounds like you have done pretty much all you can . If they are the ones with Teflon tips , I’m thinking the tip is damaged . You could try slicing a small bit off the end as parallel as you can with a Stanley knife . Failing that , the round filing cabinet might...
- 15 May 2023, 09:13
- Forum: Biology, Physics...
- Topic: Digital Oscilloscopes
- Replies: 2
- Views: 3753
Re: Digital Oscilloscopes
We have the Hameg HM 203-7
- 15 May 2023, 09:10
- Forum: Chemistry and Labware - General
- Topic: Chemicals not sold by Westlab or other common suppliers
- Replies: 13
- Views: 5769
Re: Chemicals not sold by Westlab or other common suppliers
Has anyone ever bought from Sigma? We used to get lab supplies from them all the time when I worked in medical research, but not sure about for a school. I was in a similar situation a couple of years ago with a science extension student. Setting up the account was very easy. I contacted one of the...
- 09 May 2023, 09:32
- Forum: Recipes and Pracs
- Topic: flame test in spray bottles??
- Replies: 28
- Views: 18128
Re: flame test in spray bottles??
We don't even really soak.... students dip, swirl around a bit then burn away.
- 08 May 2023, 15:20
- Forum: The Lab Tech Position
- Topic: Limit on number of Practicals done each week?
- Replies: 19
- Views: 9931
Re: Limit on number of Practicals done each week?
I just worked out our service factor (after figuring out what that was!) and it is 0.248! Although I do feel very busy (says me spending time here! :cheesy: ), I can't see it would need to be as high as 0.8. I would have nothing to do! And it's kind of my fault I am so busy as I was employed at 3 d...
- 30 Apr 2023, 18:57
- Forum: Sourcing Materials & Eq Repairs
- Topic: Amber dropper bottles
- Replies: 19
- Views: 6608
Re: Amber dropper bottles
Interesting... That's what we had at my prevous school (0.1 and 1M) but they seem to use a variety of concentrations here! Maybe because they were just "there"? I don't know... we've got 5M, 6M and 2.5M of some things.... I just thought maybe things had changed over the years I wasn't wor...
- 25 Apr 2023, 08:52
- Forum: Sourcing Materials & Eq Repairs
- Topic: Amber dropper bottles
- Replies: 19
- Views: 6608
- 06 Apr 2023, 07:54
- Forum: Safety with Chemicals
- Topic: Taking Mercury to the class room
- Replies: 19
- Views: 9967
Re: Taking Mercury to the class room
IMO, we have Antimony, is all good with me. Use gloves and demo only.
- 01 Apr 2023, 08:59
- Forum: Sourcing Materials & Eq Repairs
- Topic: grease pencil
- Replies: 4
- Views: 3790
Re: grease pencil
We use chinagraph pencils, students don't seem to steal them, easy to wipe off.
- 30 Mar 2023, 11:05
- Forum: Miscellaneous
- Topic: Ordering for Practical Lessons
- Replies: 50
- Views: 25591
Re: Ordering for Practical Lessons
Since I've popped the 3 day warning in RA, I've had every teacher who have put in pracs late come and see me within minutes... love it. They seem to be running scared.