Search found 1163 matches
- 14 Mar 2023, 13:08
- Forum: Sourcing Materials & Eq Repairs
- Topic: trundle wheel
- Replies: 13
- Views: 4567
Re: trundle wheel
The blue and yellow plastic ones are terrible for falling apart. We have one here but also have two metal ones that seem to do a great job. These were bought by the previous labbie and I do know not long after he bought those, I couldn't source them for the school I was at at the time. Maybe someone...
- 14 Mar 2023, 11:32
- Forum: Miscellaneous
- Topic: cutting contact
- Replies: 7
- Views: 2997
Re: cutting contact
Interesting - and they are as good?
- 14 Mar 2023, 07:37
- Forum: Miscellaneous
- Topic: cutting contact
- Replies: 7
- Views: 2997
Re: cutting contact
The heavy duty labels are the same size as the Riskassess templates. As long as they are printed on a laser printer, you will have no problems with them running. I have had to change the silver nitrate labels after about three years of use because of the stains but otherwise, I've had no problems. T...
- 13 Mar 2023, 14:14
- Forum: Miscellaneous
- Topic: cutting contact
- Replies: 7
- Views: 2997
Re: cutting contact
Buy the Avery heavy duty labels and you don't need contact. I know, bit late now but worth the cost. I don't think it will ruin the blade of the guillotine, but I'm not sure it will happily cut it. It could be tricky. And Macca - the sticky tape. My predecessor used sticky tape and it is so difficul...
- 09 Mar 2023, 08:39
- Forum: Sourcing Materials & Eq Repairs
- Topic: Wheatstone bridge
- Replies: 14
- Views: 3932
Re: Wheatstone bridge
yes bigmack, ours are slightly different but essentially the same thing. I think I will toss them. I just wanted to check there wasn't one random prac they came out for in an obscure topic area before I ditch them. I feel like I should offer them to a museum! :lol: And the minute you do that, there...
- 01 Mar 2023, 12:25
- Forum: Safety with Chemicals
- Topic: Environmental friendly Disposable Gloves?
- Replies: 20
- Views: 6029
Re: Environmental friendly Disposable Gloves?
Well, look what I found! https://glovesnow.com/guide-to-disposable-nitrile-gloves/ Are Nitrile Disposable Gloves Recyclable? Yes, Nitrile Disposable Gloves are recyclable in Australia. They can be recycled, however they need to go in a special separate recycling bin, as opposed to your standard rec...
- 27 Feb 2023, 12:36
- Forum: Safety with Chemicals
- Topic: Environmental friendly Disposable Gloves?
- Replies: 20
- Views: 6029
Re: Environmental friendly Disposable Gloves?
Had a look - keep in mind that the first ones, Australian Organics are food handling gloves, don't appear to be chemical resistant (unless I missed something). Second ones, they say they break down rapidly but what to? Microplastic?? Third ones look good, they say break down into organic matter alth...
- 27 Feb 2023, 11:13
- Forum: Safety with Chemicals
- Topic: printers
- Replies: 9
- Views: 3514
Re: printers
We have a printer in our science staffroom which adjoins the prep room. The coordinator has his own office and own printer. They are B&W laser printers, so fine for printing chem labels (which are quite legal in B&W). Our IT guys look after toner. We get our paper from a general college supp...
- 23 Feb 2023, 13:36
- Forum: Biology, Physics...
- Topic: Year 12 Biology Depth Studies
- Replies: 11
- Views: 12417
Re: Year 12 Biology Depth Studies
Or try Southern Biological - they will sell something.
- 23 Feb 2023, 13:35
- Forum: Chemistry and Labware - General
- Topic: standardized NaOH
- Replies: 20
- Views: 9893
Re: standardized NaOH
Hi all, Can someone explain making a primary standard to me? I do not understand this at all. We have some made up from the previous labbie but she retired and I'll need to make more. We used 0.1m oxalic as the primary standard and 0.1 NaOH (unknown conc to the students), but do I just make up 0.1m...
- 22 Feb 2023, 06:32
- Forum: Safety with Chemicals
- Topic: Risk Assessment
- Replies: 7
- Views: 3214
Re: Risk Assessment
Legislation states that the PCBU must manage risks - so identifying hazards, rating the risk of those hazards and then taking steps to control the risks. This is done by doing a risk assessment which is prepared by the person undertaking the activity (or in the case with children - the person runnin...
- 21 Feb 2023, 07:49
- Forum: Sourcing Materials & Eq Repairs
- Topic: gauze mats with solid centre
- Replies: 6
- Views: 2963
Re: gauze mats with solid centre
Think that's it. There was some problem a few years ago with these types of mats containing asbestos but any you purchase now would be fine. I've never had any experience with them to know if they last longer, work better etc.
- 20 Feb 2023, 07:50
- Forum: Safety with Chemicals
- Topic: chemical waste
- Replies: 24
- Views: 9316
Re: chemical waste
Isn't copper carbonate insoluble in water? If you have some in water, I would filter it out and throw the filter paper in the bin.
- 17 Feb 2023, 10:50
- Forum: Safety with Chemicals
- Topic: chemical waste
- Replies: 24
- Views: 9316
Re: chemical waste
Of course I remember you Lada! Lovely to hear from you. Thanks for the tips re. the Chem waste. I always hated Chemistry when I was at school (I liked Physics though!) now I find that Chem is a major part of my job and I am expected to be the "School Chemistry Expert". Funny how things tu...
- 17 Feb 2023, 10:46
- Forum: Safety with Chemicals
- Topic: chemical waste
- Replies: 24
- Views: 9316
Re: chemical waste
The solid can be wrapped and put into the bin.
- 17 Feb 2023, 06:46
- Forum: Chemistry and Labware - General
- Topic: Sodium Dichromate for cleaning glassware
- Replies: 23
- Views: 10813
Re: Sodium Dichromate for cleaning glassware
Yep - bin them. Does sound like the NaOH effect, but who knows?
- 14 Feb 2023, 06:53
- Forum: Sourcing Materials & Eq Repairs
- Topic: Volumetric flasks
- Replies: 10
- Views: 5443
Re: Volumetric flasks
Class A will be more accurate than B. If you are going to the trouble of using a volumetric flask, you may want to consider the Class A. But I'd keep it for myself, don't let teachers or students use it. If it is for student use, just get the Class B.
- 09 Feb 2023, 11:18
- Forum: Safety with Chemicals
- Topic: storage of H2O2
- Replies: 12
- Views: 9651
Re: storage of H2O2
It does deteriorate quickly so depends what you are doing with it. We used to do an enzyme prac test for Bio which consumed a lot and it needed to be accurate(ish). They are not doing that prac anymore so I'm not expecting to ever use up even the 500mL bottle now. I will probably throw half of it ou...
- 07 Feb 2023, 13:48
- Forum: Sourcing Materials & Eq Repairs
- Topic: Cleaning retort clamps
- Replies: 7
- Views: 3231
Re: Cleaning retort clamps
That is an odd request, Helen! God, next they'll want you to clean the tripods :yuck: :giggle: I guess try to work out what's on them and why they want them cleaned. Maybe just detergent and a cloth/scourer/brush. But as Rosalie says, make sure they dry quickly. Merilyn, I know right?!! :cheesy: :c...
- 07 Feb 2023, 13:45
- Forum: Miscellaneous
- Topic: Conferences
- Replies: 16
- Views: 13695
Re: Conferences
Shame - in July I will be somewhere between Broome and Kakadu
Don't mean to boast or anything...actually, yes, I am bragging
Don't mean to boast or anything...actually, yes, I am bragging