Search found 75 matches

by Prima
04 Jul 2019, 13:47
Forum: Chemistry and Labware - General
Topic: Glass rod puzzle
Replies: 12
Views: 728

Re: Glass rod puzzle

I was laughed at when I put the rubber end in the solution - that's apparently the bit that you are meant to hold! Don't have many left now, replacing them slowly with the white stirring rods, I think they're great.
by Prima
02 Jul 2019, 09:48
Forum: Safety with Chemicals
Topic: LEAD NITRATE
Replies: 17
Views: 916

Re: LEAD NITRATE

This is always my example I use when talking about how old, and out of date CSIS is. It is a crime that students in DET schools are being exposed to a chemical that has now been found to be so toxic. Not to mention the poor labbies that handle the solid. It really is time the DET caught up with the...
by Prima
26 Jun 2019, 08:59
Forum: Sourcing Materials & Eq Repairs
Topic: Dropper bottle teats
Replies: 30
Views: 2221

Re: Dropper bottle teats

I don't have any dropper bottles anymore all in stull bottles no more contamination, less spills and very little deterioration. Silver nitrate bottles are covered in foil been using like that for 8-9 years now not a problem. Iodine in amber regent bottles kid use disposable droppers. Macca , how do...
by Prima
24 Jun 2019, 11:05
Forum: Sourcing Materials & Eq Repairs
Topic: Spring Balances
Replies: 7
Views: 305

Re: Spring Balances

Great idea, Labbie!
Might not be necessary with this new design, the markings are printed on the inside of the tubing, doesn't look like they can be worn away by the sliding marker.
by Prima
21 Jun 2019, 12:18
Forum: Sourcing Materials & Eq Repairs
Topic: Spring Balances
Replies: 7
Views: 305

Re: Spring Balances

I've recently bought a new Premium style, much better and stronger than the old style. From Haines, code P350. Not cheap at $16 but hopefully an investment. We are keeping them for Seniors and letting the juniors use the old tubular ones. Until recently we were using the even older version, essentia...
by Prima
20 May 2019, 09:48
Forum: Sourcing Materials & Eq Repairs
Topic: dishwasher rack
Replies: 11
Views: 683

Re: dishwasher rack

Genius!
by Prima
16 May 2019, 13:53
Forum: Recipes and Pracs
Topic: Oil for separation and rusting pracs
Replies: 4
Views: 359

Re: Oil for separation and rusting pracs

We use vegetable oil in a separating funnel as well, but I don't bother cleaning it. Just drain as much as possible and then label it "Use with oil", so the same one gets used each time. And the rusty nails - I've tried some different ideas this year, still to decide if any of them worked any better...
by Prima
15 May 2019, 14:23
Forum: The Polling Booth
Topic: Topic Suggestions for Future PD Sessions
Replies: 12
Views: 1253

Re: Topic Suggestions for Future PD Sessions

Perhaps a hands-on prac, or demo, on the topic of Agar plates - preparation, use, what to avoid as well as safe disposal.

And yes - pracs that work would be great for everyone!
by Prima
10 May 2019, 09:16
Forum: Sourcing Materials & Eq Repairs
Topic: dishwasher rack
Replies: 11
Views: 683

Re: dishwasher rack

Yes it works really well for most glassware - but it doesn't take the 100ml measuring cylinders. Trust me, it's a great investment, so much more useful than the rack used in kitchen dishwashers, I don't know why I even keep the one that came with the washer! Actually, I have put that on top of the d...
by Prima
08 May 2019, 14:38
Forum: Sourcing Materials & Eq Repairs
Topic: dishwasher rack
Replies: 11
Views: 683

Re: dishwasher rack

Best thing I bought was the dishwasher test tube rack (from Haines I think, but others also stock it). It's expensive but has paid for itself several times over. I can fit so much more into the dishwasher, including the baskets Merilyn is talking about, which are also brilliant for things like petri...
by Prima
07 May 2019, 11:25
Forum: Biology, Physics...
Topic: Year 12 Biology Depth Studies
Replies: 7
Views: 752

Re: Year 12 Biology Depth Studies

Hear hear, jamo - they certainly didn't think it through when they changed the Syllabus. 70-80% of my time in Term 1 was spent on Chemistry, with a lot of overtime (unpaid). Everything else fell apart and it caused a lot of tension in the staff room (to say nothing of mine!)
by Prima
28 Mar 2019, 11:51
Forum: Chemistry and Labware - General
Topic: Balances
Replies: 3
Views: 503

Re: Balances

You can put a 150ml beaker on them quite easily. 250ml is a bit larger than the pan. But the fact that they take up to 600g means you can tare and still fit a lot in the beaker! We've been using them for about a year, have had a few issues but pretty minor, especially when you consider the price. Ea...
by Prima
27 Mar 2019, 12:19
Forum: Chemistry and Labware - General
Topic: Balances
Replies: 3
Views: 503

Re: Balances

I found these, bought a few and went back and got some more. They are not always suitable depending on the prac but are great! https://www.altronics.com.au/p/t2261-600g-digital-pocket-scales/ We usually use them for Seniors and have a "Please count Out and In" reminder (very easy to slip into a pock...
by Prima
12 Feb 2019, 12:54
Forum: Miscellaneous
Topic: "Where is it" database
Replies: 11
Views: 1897

Re: "Where is it" database

That would probably be the easiest. Perhaps a brand name instead, eg Pasco? Or include an additional item "Pasco" and give its location as "Refer to Dataloggers"? We have a similar Excel spreadsheet, no pictures. As you say, melsid, we are probably the ones who use the list more than anyone else so ...
by Prima
12 Feb 2019, 08:06
Forum: Miscellaneous
Topic: "Where is it" database
Replies: 11
Views: 1897

Re: "Where is it" database

Thanks Prima . Yeah , that was where I was thinking . Do you know if there is a way to insert a picture into a cell in excel or google sheets ? You can insert a pic but it "sits" on the spread sheet and isn't "locked" to anything ..... I am only an excel beginner....and probably missing the obvious...