Wow,
I have just followed Estelle's instructions and worked really well!!
Thank you all. I love chemtalk
Lada
Search found 802 matches
- 05 Mar 2014, 09:01
- Forum: Sourcing Materials & Eq Repairs
- Topic: repairing spirit thermometers
- Replies: 24
- Views: 10344
- 04 Mar 2014, 07:29
- Forum: Biology, Physics...
- Topic: Phenolphthalein Agar Revisited!!
- Replies: 26
- Views: 10147
Re: Phenophthalein Agar Jelly
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
If you use it soon, acid will kill everything anyway, ha ha .
Lada
- 03 Mar 2014, 11:22
- Forum: Safety with Chemicals
- Topic: Do we have to keep exhaust fan on 24/7
- Replies: 29
- Views: 14694
Re: Do we have to keep exhaust fan on 24/7
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
Lada
- 03 Mar 2014, 07:55
- Forum: Safety with Chemicals
- Topic: Disposing of broken mercury thermometers
- Replies: 13
- Views: 6584
Re: Disposing of broken mercury thermometers
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
Lada
- 03 Mar 2014, 07:51
- Forum: Announcements
- Topic: Breaking news
- Replies: 3
- Views: 2693
Re: Breaking news
Very funny, ha ha
L
L
- 28 Feb 2014, 13:50
- Forum: Safety with Chemicals
- Topic: Disposing of broken mercury thermometers
- Replies: 13
- Views: 6584
Re: Disposing of broken mercury thermometers
Sarah,
does it mean to "bin it"?
Lada
does it mean to "bin it"?
Lada
- 28 Feb 2014, 08:16
- Forum: Safety with Chemicals
- Topic: Disposing of broken mercury thermometers
- Replies: 13
- Views: 6584
Re: Disposing of broken mercury thermometers
CSIS recommends covering droplets of Hg with S to form harmless HgS. So I guess bin it is OK.
Any other ideas?
Lada
Any other ideas?
Lada
- 24 Feb 2014, 08:31
- Forum: Chemistry and Labware - General
- Topic: Broken Glassware
- Replies: 25
- Views: 10117
Re: Broken Glassware
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
Lada
- 20 Feb 2014, 10:54
- Forum: Sourcing Materials & Eq Repairs
- Topic: Splints?
- Replies: 4
- Views: 2737
Re: Splints?
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
For O2 testing I usually use soft (balsa )wood which is easier re-lit as a positive test.
Lada
- 19 Feb 2014, 13:30
- Forum: Sourcing Materials & Eq Repairs
- Topic: TSA Agar
- Replies: 7
- Views: 4408
Re: TSA Agar
What is TSA?
Lada
Lada
- 18 Feb 2014, 09:43
- Forum: Biology, Physics...
- Topic: Egeria densa (water plant)
- Replies: 6
- Views: 3793
Re: Egeria densa (water plant)
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
Lada
- 17 Feb 2014, 14:23
- Forum: Miscellaneous
- Topic: starch
- Replies: 11
- Views: 4468
Re: starch
I use the biodegradable beans with great success.
Just put 3-4 in 100ml hot water and stir to dissolve.
Love it.
L
Just put 3-4 in 100ml hot water and stir to dissolve.
Love it.
L
- 17 Feb 2014, 14:21
- Forum: Sourcing Materials & Eq Repairs
- Topic: Cotton covered wire
- Replies: 11
- Views: 5011
Re: Cotton covered wire
Yes, enamel coated wire works well.
Lada
Lada
- 13 Feb 2014, 10:36
- Forum: Biology, Physics...
- Topic: Preserved Animals
- Replies: 10
- Views: 8230
Re: Preserved Animals
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 collected the old solution, stored in in hazchem cabinet until chemical collection at the end of year.
Lada
- 04 Feb 2014, 10:58
- Forum: Safety with Chemicals
- Topic: chemgold3
- Replies: 2
- Views: 1655
chemgold3
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
Lada
- 03 Feb 2014, 07:18
- Forum: Miscellaneous
- Topic: Insurance travelling while shopping for school
- Replies: 49
- Views: 15822
Re: Insurance travelling while shopping for school
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.
- 31 Jan 2014, 10:40
- Forum: Biology, Physics...
- Topic: senior science
- Replies: 10
- Views: 4319
Re: senior science
Thanks Rae and Lou,
sounds like ham it is!!
sounds like ham it is!!
- 31 Jan 2014, 09:10
- Forum: Biology, Physics...
- Topic: senior science
- Replies: 10
- Views: 4319
Re: senior science
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
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
- 31 Jan 2014, 09:04
- Forum: Biology, Physics...
- Topic: senior science
- Replies: 10
- Views: 4319
senior science
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...
- 30 Jan 2014, 11:23
- Forum: Announcements
- Topic: Welcome back everyone.
- Replies: 14
- Views: 6363
Re: Welcome back everyone.
Hear,Hear Ian.
We will help you, Merilyn, if nothing else, with a good sense of humour.
Lada
We will help you, Merilyn, if nothing else, with a good sense of humour.
Lada