Search found 318 matches
- 14 Sep 2017, 14:48
- Forum: Chemistry and Labware - General
- Topic: Lighting Bunsens
- Replies: 31
- Views: 15775
Re: Lighting Bunsens
We're still using matches, and it's not just the kids who have trouble. The matchbox strikers on the matches we get are terrible.
- 18 Aug 2017, 14:40
- Forum: Miscellaneous
- Topic: Ordering for Practical Lessons
- Replies: 50
- Views: 27919
Re: Ordering for Practical Lessons
I print out the whole risk assessment and the teachers (sometimes) read out the risks to the class. I'm not sure how many of them actually read it before they sign it, but I make sure it's in front of them when they start the prac.
- 03 Aug 2017, 11:40
- Forum: Safety with Chemicals
- Topic: Potassium dichromate solution disposal
- Replies: 15
- Views: 12580
Re: Potassium dichromate solution disposal
I used Appendix E in the CSIS. Potassium dichromate is labelled as 42 in Appendix D, so I would use those instructions. But Appendix D does say it may be disposed of down the sink.
I'm DET, and still using the old CSIS.
I'm DET, and still using the old CSIS.
- 01 Aug 2017, 14:17
- Forum: Safety with Chemicals
- Topic: Potassium dichromate solution disposal
- Replies: 15
- Views: 12580
Re: Potassium dichromate solution disposal
According to CSIS: Add sodium sulphide, sodium hydroxide or sodium carbonate. Stir and pour the mixture into the heavy metals waste bottle. When settled, the clear solution may be decanted and washed down the sink. Hold the precipitate for collection by licensed waste contractors.
Carol
Carol
- 27 Jun 2017, 13:13
- Forum: Biology, Physics...
- Topic: where to find ray box globes
- Replies: 6
- Views: 6528
Re: where to find ray box globes
The last time I had to buy them I ended up getting the 12V 36W from Serrata, and they work fine.
- 30 May 2017, 12:45
- Forum: Chemistry and Labware - General
- Topic: Water Hardness
- Replies: 4
- Views: 2840
Re: Water Hardness
Thanks smeee. I've just emailed you.
- 30 May 2017, 10:09
- Forum: Chemistry and Labware - General
- Topic: Water Hardness
- Replies: 4
- Views: 2840
Water Hardness
I have been asked for Eriochrome Black T indicator and EDTA for water testing. And nitrate/nitrate ions tests. This is for a student doing chemistry by Distance Ed. She doesn't have any more information. Can anyone help? This is for tomorrow.
Thanks
Carol
Thanks
Carol
- 19 May 2017, 07:58
- Forum: Sourcing Materials & Eq Repairs
- Topic: Refurbishing Rheostats
- Replies: 12
- Views: 9159
Re: Refurbishing Rheostats
Wow! Thanks for that. Great instructions.
- 05 May 2017, 12:19
- Forum: Biology, Physics...
- Topic: Yoghurt slides
- Replies: 2
- Views: 4089
Re: Yoghurt slides
I've never done this, but I just googled it and multiples sites came up. The first one said: 1.Take a very small drop of yogurt with the toothpick and smear it for 2 to 3 seconds on the slide. 2.Place a small drop of methylene blue solution on a microscope slide (optional). ... 3.Place a coverslip o...
- 02 Feb 2017, 11:55
- Forum: Sourcing Materials & Eq Repairs
- Topic: Hospital Grade Disinfectant
- Replies: 4
- Views: 2654
Re: Hospital Grade Disinfectant
Yes, I use 70% ethanol as well.
- 02 Feb 2017, 11:54
- Forum: Sourcing Materials & Eq Repairs
- Topic: Big bag thingy
- Replies: 5
- Views: 3290
Re: Big bag thingy
We bought one of these last year. First use, it got ripped in two places. I've taped the rips up with black electrical tape, but no-one seems keen to get it out again.
- 24 Nov 2016, 07:01
- Forum: Safety with Chemicals
- Topic: Chemical Storage Container
- Replies: 11
- Views: 5523
Re: Chemical Storage Container
I use 50mL specimen jars from Labtek (PS744UUUV) at $66 for 500.
- 09 Nov 2016, 06:40
- Forum: The Polling Booth
- Topic: Do you move around?
- Replies: 12
- Views: 13503
Re: Do you move around?
There isn't really a response for me. Several years ago I was moved to the office for a term. "Multi-skilling". I hated it. Have been in science ever since. So do I tick the first box?
- 26 Oct 2016, 10:32
- Forum: Sourcing Materials & Eq Repairs
- Topic: diji pipette
- Replies: 8
- Views: 4952
Re: diji pipette
We've got 2 of the 10mL pipettes, but I don't think they've ever been used. We bought them to try, years ago - from Scientrific - but they seem to have been put aside and forgotten.
- 21 Sep 2016, 09:57
- Forum: Sourcing Materials & Eq Repairs
- Topic: What paper towel do you get ?
- Replies: 7
- Views: 3475
Re: What paper towel do you get ?
We use the Tork paper as well. We have to buy it out of our budget, and even have to supply the staffroom, although every other staffroom is suppled by the cleaners. We've let the paper run out in the staffroom, but the cleaner never replaces it, so I have to. We have only recently been allowed to g...
- 01 Jun 2016, 08:06
- Forum: Sourcing Materials & Eq Repairs
- Topic: eye balls in Wollongong
- Replies: 6
- Views: 3263
Re: eye balls in Wollongong
Hi Kathryn We usually get ours from Illawarra Smallgoods in Fairy Meadow, but this year we're getting preserved eyes from Southern biology, because we're doing it across the whole year and need 65 eyes. The teachers will be doing the dissections over a week or two and decided it would be better to g...
- 13 May 2016, 14:55
- Forum: Sourcing Materials & Eq Repairs
- Topic: Switches
- Replies: 3
- Views: 2218
Re: Switches
Serrata sells them.
'Rocker switch' 1035658 @$10.84
'Rocker switch' 1035658 @$10.84
- 12 May 2016, 09:00
- Forum: Safety with Chemicals
- Topic: Another GHS question...
- Replies: 30
- Views: 12559
Re: Another GHS question...
My HT has just told me that she was told at a CNI meeting that Westlab sell the GHS chemical labels.
I can't find them anywhere on the Westlab site, so she's asking for the link.
I can't find them anywhere on the Westlab site, so she's asking for the link.
- 06 May 2016, 08:19
- Forum: Chemistry and Labware - General
- Topic: New gauze and tripod
- Replies: 11
- Views: 4806
Re: New gauze and tripod
We got ours from Scientrific. Tripod SC92000 @$10 and gauze, pack of 5 SC92002 @$14.
The gauze is shaped to fit the tripod. Teachers are very happy with them.
The gauze is shaped to fit the tripod. Teachers are very happy with them.
- 01 Apr 2016, 08:27
- Forum: Safety with Chemicals
- Topic: Testing Leaves For Starch
- Replies: 2
- Views: 1938
Re: Testing Leaves For Starch
I can answer my own question. The DEC did issue Safety Alert No 50 which states that "Schools must ensure that methylated spirits is not heated directly over a Bunsen burner even in a closed container such as a flask with reflux condenser. The recommended method is the use of a water bath where...