Australia's Science Forum

I've also got citric acid for alkali spills and have recently added a spray bottle with water to damp down anything that could create dust. That was after a sodium hydroxide bottle leaked over the holidays. It had dried out and the residue had formed a very fine dust that started to float up when I ...

What size bottle and how full is it?

I've heard you can fix over stretched kinked ones by wiring them up and putting them into a hot fire, but I've never tried it.

Not to be eaten or tasted. May be contaminated. Experiments involving tasting or eating are not allowed in laboratories. This is a copy of some small labels I made and printed out on bright coloured paper and stuck to the food items in the department. Depending on the current crop of teachers I put ...

Does anyone have a good poster or set of instructions about how to use an eye wash?

I just set up a tank I think the temperature range you could set it to was 18-30.
You can get heater thermastat combinations for aquariums made of metal now which might last a bit longer than the glass ones.
Joan

We have always cooked up agar and phenolphthalien, then the cubes are put in a dilute sodium hydroxide solution to turn pink.
Very easy, never had any complaints.

I leave a copy at the office with other stuff given to the fire department if they come so they know what they're dealing with.

I think it depends on your water quality.
I work at two schools, at one I use tap water and have no problems.
At the other I get all sort of interesting precpitates if I use tap water,
which is bore water, so I have to use ditilled water.

I haven't tried marking glass but I colour-coded all the labels on trays of equipment -a different colour for each lab and prep room.
Of course it doesn't mean things are always put away but anything out of place stands out.

It has to be used carefully as it can cause burns. Google "plaster of paris burns" for some scary stories.

Hi

Have a look at this site

www.youtube.com/watch?v=kgm-qSAfqTE
or
www.neatorama.com/2007/11/01/sodium-disposal

Japezz