Australia's Science Forum

Wow,
I have just followed Estelle's instructions and worked really well!!
Thank you all. I love chemtalk
Lada

As long as you don't have it sitting outside fridge and grow bacteria on it.
If you use it soon, acid will kill everything anyway, ha ha .
Lada

As I do not go in there every day, I only turn fan on a few minutes before going in. I do have cross ventilation, but I always turn the fan on.
Lada

Yes, I agree, it goes against everything we know, but I too, read it as" bin it" after it has been neutralized with sulfur.
Lada

Very funny, ha ha
L

Sarah,
does it mean to "bin it"?
Lada

CSIS recommends covering droplets of Hg with S to form harmless HgS. So I guess bin it is OK.
Any other ideas?
Lada

We have a separate bin for broken glass and when full I tape lid down and dispose in outside large collection bins for general rubbish. It cannot be recycled. In last 4 weeks I have filled 2x A4 size boxes with lots of glass including 3Lbeaker, grrrr my only one
Lada

For H2 testing I use bamboo sticks or even toothpicks blu-tacked to bamboo sticks, so can be easily replaced .
For O2 testing I usually use soft (balsa )wood which is easier re-lit as a positive test.
Lada

What is TSA?
Lada

Yes, Ocker's right. I get mine from local creek and grow it in our separate fishtank just for this weed. It is not banned from schools, (yet?)
Lada

I use the biodegradable beans with great success.
Just put 3-4 in 100ml hot water and stir to dissolve.
Love it.
L

Yes, enamel coated wire works well.
Lada

We did replace old solutions of formalin with alcohol. There doesn't seem to be any deterioration.
I collected the old solution, stored in in hazchem cabinet until chemical collection at the end of year.
Lada

I work at independent school in NSW and could not log on chemwatch. I was told, the nsw independent school now use different system. Has anybody have same problem?
Lada

I now shop during work time, using work's car. School seems to prefer it that way, but it takes a big chunk out my time in labs. Better be safe (insured) than sorry.

Thanks Rae and Lou,
sounds like ham it is!!

Thanks, Rae
I will ask teacher if processed pork (ham) still classify as meat.
But it could work with fresh meat too, if temp only 60o, it will not cook it

We just introduced this subject and one prac teacher wants to do is determination of water in fruit, veg and meat. She is planning to dry it over few days in lab :crazy: . No good. I do not want fresh meat laying around in heat for days. What is the easiest way of doing this prac? I was going to gro...

Hear,Hear Ian.
We will help you, Merilyn, if nothing else, with a good sense of humour.
Lada