Australia's Science Forum

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

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.

Why do pms take so long to go through?

Smiley, I've sent you a PM. I f you have any advice or know someone who does I'd be grateful

Thanks.

I find a fine piece of fuse wire often helps:)

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.

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...

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...

Sounds good ocker, let us know more info when it comes to hand.

Happy retirement!

smiley wrote:Is Hyrdophillia like the opposite of rabies?

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.

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...

Thanks it came up that time. I'll have a look .

Sorry Harvey, I got a 404 error.

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.  However I’d like to get something other than a flatline. ï...

The secretary is not here today.

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...