Could anyone tell me how they treat/deal with/dispose of waste potassium nitrate solution?
It is an oxidiser so really shouldn't be heated to recrystallise, and shouldn't be ground in case it sparks ?
Thanks
Search found 193 matches
- 24 Jul 2015, 11:35
- Forum: Safety with Chemicals
- Topic: disposing of potassium nitrate solution
- Replies: 1
- Views: 1412
- 14 Jul 2015, 13:07
- Forum: Safety with Chemicals
- Topic: GHS Labelling and frustrations with Chemwatch
- Replies: 58
- Views: 20324
Re: GHS Labelling and frustrations with Chemwatch
I spent 45 minutes with them yesterday trying to work out how to get the label to print the entire chemical name and not half of it . As other people have said, you used to be able to to manipulate the areas, but not any more. At the end of it I was no closer to a solution. How hard can it be.
- 19 Jun 2015, 12:06
- Forum: Forum Support Desk
- Topic: pm
- Replies: 1
- Views: 5961
pm
Why do pms take so long to go through?
- 19 Jun 2015, 07:44
- Forum: Safety with Chemicals
- Topic: lead iodide and lead Nitrate.
- Replies: 5
- Views: 3619
Re: lead iodide and lead Nitrate.
Smiley, I've sent you a PM. I f you have any advice or know someone who does I'd be grateful
- 15 Jun 2015, 11:01
- Forum: Safety with Chemicals
- Topic: lead iodide and lead Nitrate.
- Replies: 5
- Views: 3619
- 15 Jun 2015, 10:59
- Forum: Chemistry and Labware - General
- Topic: Dealing with a blocked burette
- Replies: 12
- Views: 5886
Re: Dealing with a blocked burette
I find a fine piece of fuse wire often helps:)
- 11 Jun 2015, 14:56
- Forum: Safety with Chemicals
- Topic: lead iodide and lead Nitrate.
- Replies: 5
- Views: 3619
Re: lead iodide and lead Nitrate.
Well, I think they are doing stoichiometry. It's titled "precipitation and conservation of mass". They are weighing the beakers before and after and taking temperatures. O and it's 40 mL of each.
- 11 Jun 2015, 13:44
- Forum: Safety with Chemicals
- Topic: lead iodide and lead Nitrate.
- Replies: 5
- Views: 3619
lead iodide and lead Nitrate.
Hello, this is for the people using the new Oxford textbooks. We are a 7-10 school, and there is one prac where they want to combine sodium iodide and lead nitrate to produce lead iodide. They already do this in small volumes dropwise to observe precipitation on dropping sheets. for this they want t...
- 04 Jun 2015, 10:06
- Forum: Miscellaneous
- Topic: Not Happy
- Replies: 13
- Views: 5369
Re: Not Happy
I tried for years to get an air-conditioner in my prep room.. ONCE I actually got the purchase order signed by the Head of Science - because I had put into the order for Physics "heat transfer unit'.. as I raced off to the office to get the order dealt with, she realised I had conned her... si...
- 03 Jun 2015, 10:46
- Forum: Sourcing Materials & Eq Repairs
- Topic: Repairs to Science equipment
- Replies: 37
- Views: 41679
Re: Repairs to Science equipment
Sounds good ocker, let us know more info when it comes to hand.
- 29 May 2015, 10:41
- Forum: Announcements
- Topic: Retirement
- Replies: 22
- Views: 8766
Re: Retirement
Happy retirement!
- 15 May 2015, 09:49
- Forum: Chemistry and Labware - General
- Topic: Cleaning difficult glassware
- Replies: 4
- Views: 2480
- 31 Mar 2015, 08:16
- Forum: Biology, Physics...
- Topic: Photosynthesis and Respiration
- Replies: 9
- Views: 4688
Re: Photosynthesis and Respiration
smiley wrote:Is Hyrdophillia like the opposite of rabies?
- 02 Mar 2015, 14:19
- Forum: Safety with Chemicals
- Topic: Natural gas bottles for science labs
- Replies: 5
- Views: 2666
Natural gas bottles for science labs
Hi, for those of you not on town gas, can anyone tell me if we should have a cage around our gas bottles to prevent access by students? I sent an email to workcover but got directed to the relevant Australian standard, which I can't access.
Thanks.
Thanks.
- 18 Feb 2015, 09:00
- Forum: The Lab Tech Position
- Topic: what is the pay scale of a labbie
- Replies: 24
- Views: 20902
Re: what is the pay scale of a labbie
I am also on step 5, but despite an applied science degree , TAFE qualifications, and 20 years industry experience, I was originally employed at step 2. I am also on 60 hours per fortnight, during school hours, although I am expected to do things that can't possibly be done IN school hours. You have...
- 09 Dec 2014, 13:19
- Forum: Biology, Physics...
- Topic: Instructions for Audio generator
- Replies: 6
- Views: 3734
Re: Instructions for Audio generator
Thanks it came up that time. I'll have a look .
- 09 Dec 2014, 08:09
- Forum: Biology, Physics...
- Topic: Instructions for Audio generator
- Replies: 6
- Views: 3734
Re: Instructions for Audio generator
Sorry Harvey, I got a 404 error.
- 05 Dec 2014, 11:36
- Forum: Biology, Physics...
- Topic: Instructions for Audio generator
- Replies: 6
- Views: 3734
Instructions for Audio generator
Hi peoples, I have a favour to ask. I am finally getting through some of the usb drive I got from the development day in Sydney and have set up my oscilloscope as per instructions. I now have a lovely trace on my oscilloscope. ïÂÅ However I’d like to get something other than a flatline. ï...
- 21 Aug 2014, 10:04
- Forum: Safety with Chemicals
- Topic: Chemwatch, registers, etc
- Replies: 16
- Views: 5980
Re: Chemwatch, registers, etc
The secretary is not here today.
- 21 Aug 2014, 10:02
- Forum: Safety with Chemicals
- Topic: Chemwatch, registers, etc
- Replies: 16
- Views: 5980
Chemwatch, registers, etc
Hi people, I have a question for you all re chemwatch, chemical registers, etc. I am wondering if in your school you are responsible for updating registers and MSDS or if this responsibility of someone else? Does anyone else in your school have access to chemwatch, and if so, how much? Up until this...