Search found 1167 matches
- 09 Oct 2023, 10:19
- Forum: Chemistry and Labware - General
- Topic: chemical register
- Replies: 14
- Views: 8384
Re: chemical register
Consumer products are domestic products that are purchased in small quantities from say, a supermarket or hardware store. They do not need to be added to a register even if they are hazardous. Once you start buying these products in bulk e.g. by the carton, they do need to be added to your register.
- 02 May 2023, 09:35
- Forum: Sourcing Materials & Eq Repairs
- Topic: Amber dropper bottles
- Replies: 19
- Views: 6949
Re: Amber dropper bottles
I have an ample chem store so my droppers are stored in there. In Unitrays and with the DG class of the solid/concentrate.
I'm not sure how you got to Minecraft!
I'm not sure how you got to Minecraft!
- 28 Apr 2023, 12:34
- Forum: Sourcing Materials & Eq Repairs
- Topic: Amber dropper bottles
- Replies: 19
- Views: 6949
Re: Amber dropper bottles
I think they just copy previous experiments without thinking too much about what they need. Limit supply and they'll adapt. Probably, my first port of call would be to let the teachers know you are streamlining. Most of them won't say anything so you can go ahead and wait for the tears later
- 28 Apr 2023, 11:37
- Forum: Sourcing Materials & Eq Repairs
- Topic: Amber dropper bottles
- Replies: 19
- Views: 6949
Re: Amber dropper bottles
Regarding the concentrations of acids, we generally have 0.1M and 1M in droppers. I do also have 2M HCl in droppers. A coincidence that I read this now as I've just emailed a teacher who wanted 0.5M solutions (at short notice) telling him he could have 0.1M and in future if he wanted 0.5M I would or...
- 26 Apr 2023, 07:49
- Forum: Sourcing Materials & Eq Repairs
- Topic: Amber dropper bottles
- Replies: 19
- Views: 6949
Re: Amber dropper bottles
I just buy the cheaper ones from SSA, they work fine. I always thought the wadding would get contaminated and be difficult to clean. I usually swap out the things that "eat" the rubber teat - most of the nitrates (silver nitrate is fine), iodine, nitric acid (not that anyone uses that anym...
- 06 Apr 2023, 14:43
- Forum: Chemistry and Labware - General
- Topic: Chemicals not sold by Westlab or other common suppliers
- Replies: 13
- Views: 6093
Re: Chemicals not sold by Westlab or other common suppliers
Oh no! Just for the sake of doing it. Nup - as Shaz said, they will come up with all sorts of weird things and if you give an inch they'll take a mile. If you buy this, you'll find after 12 months you'll have a chem store full of useless stuff. It is surprising, as most teachers struggle to get thro...
- 04 Apr 2023, 13:40
- Forum: Chemistry and Labware - General
- Topic: Chemicals not sold by Westlab or other common suppliers
- Replies: 13
- Views: 6093
Re: Chemicals not sold by Westlab or other common suppliers
I think I may have bought something from Sigma years ago. I wouldn't have a problem buying from them, I'd have more of a problem spending a lot of money on something that will spend the next ten years on a shelf until you do a chemical clean up! New teachers can be difficult to work with. If you use...
- 04 Apr 2023, 08:16
- Forum: Chemistry and Labware - General
- Topic: Chemicals not sold by Westlab or other common suppliers
- Replies: 13
- Views: 6093
Re: Chemicals not sold by Westlab or other common suppliers
Sometimes the teachers are just passing on what the students have asked for. Sometimes the students have just got some weird experiment off Google that may or may not work. The kids just don't put any thought into it. The teacher's attitude of "it's not crucial" makes me think this is what...
- 31 Mar 2023, 11:17
- Forum: Sourcing Materials & Eq Repairs
- Topic: grease pencil
- Replies: 4
- Views: 4024
Re: grease pencil
I'd be interested, too. How long do they last on glass? How easy is it to remove? I agree - students would be less likely to write on desks etc with them.
- 30 Mar 2023, 13:04
- Forum: Safety with Chemicals
- Topic: sds for litmus paper?
- Replies: 2
- Views: 3454
Re: sds for litmus paper?
I wouldn't worry. Litmus itself is not hazardous, so legally, we are not required to have a SDS for it. We only need SDSs for hazardous chemicals.
I certainly wouldn't worry about finding an SDS for litmus paper.
I certainly wouldn't worry about finding an SDS for litmus paper.
- 30 Mar 2023, 07:45
- Forum: Safety with Chemicals
- Topic: updating SDS's
- Replies: 3
- Views: 5190
Re: updating SDS's
Check your legislation but I think it is very similar to NSW. Staff that handle, use or store any hazardous chemicals must have access to a SDS. You have to consider that there may be staff without convenient access to a computer e.g. your maintenance team. Also consider if there is a power or inter...
- 24 Mar 2023, 14:38
- Forum: Safety with Chemicals
- Topic: Mineral and rock safety alert
- Replies: 45
- Views: 27384
Re: Mineral and rock safety alert
I was here for the start of it (2011 - I'm RosalieM on page 1) but not the 2015/2016 discussion. I've printed out the document linked from November 2015 which looks kind of official and put it with the rocks to deal with later! Yeah, if it is the one I saw, it looks "kind of" official. Ce...
- 24 Mar 2023, 13:48
- Forum: Safety with Chemicals
- Topic: Mineral and rock safety alert
- Replies: 45
- Views: 27384
Re: Mineral and rock safety alert
Ah, did you miss out there! At the time this was going around, I worked in a different school system. They had tested a number of kits at a sample school and determined that all kits containing the baddies were to be destroyed. We had to fork out the cost of a guy coming out in almost hazmat gear to...
- 22 Mar 2023, 12:05
- Forum: Jobs Forum
- Topic: Casual available Term 2 2023
- Replies: 0
- Views: 9978
Casual available Term 2 2023
I have a person looking for casual work. Is a Biology graduate so chemical handling is good. He worked with me last year for a few months. Knows how schools work and is familiar with Riskassess. He's happy to do whatever needs to be done. Available from mid-May until mid-August. Can work Southern Hi...
- 21 Mar 2023, 14:39
- Forum: Miscellaneous
- Topic: Ordering for Practical Lessons
- Replies: 50
- Views: 26292
Re: Ordering for Practical Lessons
Set it and plead not guilty - "must be Riskassess doing it".
- 21 Mar 2023, 08:59
- Forum: Miscellaneous
- Topic: Ordering for Practical Lessons
- Replies: 50
- Views: 26292
Re: Ordering for Practical Lessons
With keeping copies of RA... we do only for the year they are running. At the end of the year I do a backup on RA and send them all to a file. No more hard copies anywhere and they are then saved in the system for ever. Riskassess also have a number of back ups in their system, too. I am not really...
- 20 Mar 2023, 10:52
- Forum: Biology, Physics...
- Topic: Slowing down agar plate growth?
- Replies: 4
- Views: 4137
Re: Slowing down agar plate growth?
I ended up taking them out of the incubator, putting in the chem store which is the coolest part of the prep room. We had a scorcher of a weekend for March - high 30s so I'm not sure if it was any different to being in the incubator, although it would have been cooler at night. Anyway, results were ...
- 17 Mar 2023, 08:45
- Forum: Biology, Physics...
- Topic: Slowing down agar plate growth?
- Replies: 4
- Views: 4137
Re: Slowing down agar plate growth?
Are you able to take a photo of them for him? or one of the teachers? The only potential "problem" I can think of would be if condensation formed inside it might go a little weird... are there other plates in the incubator? Can you just turn it down to whatever the lowest setting is or wi...
- 17 Mar 2023, 08:09
- Forum: Miscellaneous
- Topic: Ordering for Practical Lessons
- Replies: 50
- Views: 26292
Re: Ordering for Practical Lessons
Jumping in on an old thread here... Just wondering who still prints out the RAs if you use RiskAssess? Also, a thought on NSW DoE not needing to do RAs because of the CSIS, how many teachers actually reference the CSIS when ordering their pracs? Do they check each time that the chemical hasn't been...
- 16 Mar 2023, 13:00
- Forum: Biology, Physics...
- Topic: Slowing down agar plate growth?
- Replies: 4
- Views: 4137
Slowing down agar plate growth?
Hello Brains Trust! I have a Year 10 student doing his SRP using agar plates. They were put in the incubator yesterday. He checked them and took photos today. He won't be here tomorrow as Year 10 have an activities day. If I leave them over the weekend, they will potentially be looking very overgrow...