Search found 25 matches
- 12 Feb 2016, 13:30
- Forum: Chemistry and Labware - General
- Topic: cloud chamber
- Replies: 3
- Views: 2549
cloud chamber
Hi all I am sooo frustrated with our cloud chamber. it is fairly old but the light works and the source can be detected on our IEC geiger counter so all should be good. Well, we have never had it work and we tried again today and it still doesn't work!!! The students made their own chambers using th...
- 09 Jun 2015, 15:37
- Forum: Chemistry and Labware - General
- Topic: chemistry
- Replies: 11
- Views: 5202
Re: chemistry
Hi Loopy
Is it possible to have a copy of the "Barium Sulfate /Agar" prac too.
Thanks
Glenpaul
Is it possible to have a copy of the "Barium Sulfate /Agar" prac too.
Thanks
Glenpaul
- 03 Jun 2015, 13:56
- Forum: Chemistry and Labware - General
- Topic: chemistry
- Replies: 11
- Views: 5202
chemistry
Hi
Does anyone have success when filtering Barium Sulfate? We use Buchner Funnels with the filter paper for barium sulfate from Sc Supply and vacuum pumps on taps but we still don't seem to have success as the sulfate goes through the paper and the solution in the side arm flask is always milky.
Does anyone have success when filtering Barium Sulfate? We use Buchner Funnels with the filter paper for barium sulfate from Sc Supply and vacuum pumps on taps but we still don't seem to have success as the sulfate goes through the paper and the solution in the side arm flask is always milky.
- 12 Feb 2015, 14:25
- Forum: Chemistry and Labware - General
- Topic: GHS labels
- Replies: 22
- Views: 9570
Re: GHS labels
GHS Labels Merilyn1, when you said "GHS Labelling code that gives direction about labeling small containers" what code are you referring to? I have "safe work Australia" - Understanding Hazardous Chemical Labels but I don't have anything else. Has the DET put anything out. AIS ha...
- 09 Feb 2015, 14:52
- Forum: Chemistry and Labware - General
- Topic: GHS labels
- Replies: 22
- Views: 9570
GHS labels
Hi
Do we need to print the new GHS labels in colour when we are labeling for an experiment, eg 1.0M Hydrochloric Acid labels onto dropper bottles or 100mL reagent jars for 1 lesson?
Do we need to print the new GHS labels in colour when we are labeling for an experiment, eg 1.0M Hydrochloric Acid labels onto dropper bottles or 100mL reagent jars for 1 lesson?
- 16 Jun 2014, 13:41
- Forum: Chemistry and Labware - General
- Topic: GHS and Labels
- Replies: 22
- Views: 9590
GHS and Labels
Hi While you are on the subject of Registers etc how is everyone going with the new GHS, SDS, labelling? We find we can't use the Chemwatch labels as they seem to be too big for dropper bottles and we can't use a colour printer so we have been using the Chemical Label Maker V5 from Omega Scientific ...
- 12 Jun 2014, 10:22
- Forum: Chemistry and Labware - General
- Topic: Hot Ice demo using Sodium Acetate
- Replies: 0
- Views: 1684
Hot Ice demo using Sodium Acetate
Hi We have been trying to get the "Hot Ice" demonstration from utube to work. Has anyone had success? We have year 3 coming into Sc on Mon for a look at "Chemical /Physical change" and ,as Frozen is the movie they are all watching, we thought it would be good to catch their atten...
- 20 Feb 2014, 13:55
- Forum: Chemistry and Labware - General
- Topic: IEC non-glass hofmann voltameter
- Replies: 1
- Views: 1768
IEC non-glass hofmann voltameter
Hi All WHAT AM I DOING WRONG? Does anyone else have a non - glass Hofmann voltameter from IEC. I purchased one a couple of years ago and it was perfect the first time we used it. I washed it and let it dry then put it with the glass ones in the store room.The next time we filled it to use it it leak...
- 16 Oct 2013, 09:28
- Forum: Miscellaneous
- Topic: Chemwatch problems
- Replies: 10
- Views: 4755
Re: Chemwatch problems
Hi Thanks for all your comments. We have gained access by using "Superbug" response.(thanks very much!) New address and a new look and we used the word administrator for the middle line on the new look login page. We were told last week that it is to change but that we could use the same l...
- 16 Oct 2013, 08:23
- Forum: Miscellaneous
- Topic: Chemwatch problems
- Replies: 10
- Views: 4755
Chemwatch problems
Hi
Is anyone else having trouble logging onto Chemwatch. We were ok up until last week but now it says our Username and Password are incorrect.
Is anyone else having trouble logging onto Chemwatch. We were ok up until last week but now it says our Username and Password are incorrect.
- 11 Oct 2013, 09:17
- Forum: Miscellaneous
- Topic: GHS labelling clarification
- Replies: 1
- Views: 1569
GHS labelling clarification
Hi All Is it incorrect to have the (old) numbers on labels now. eg 3, 5.1, 6, 8 etc. Is it that we must only have the pictograms on the label. If this is the case then how do we label dropper bottles as there can be 2 or 3 pictograms required on each bottle. We are using Omega Scientific labels as t...
- 09 Sep 2013, 15:23
- Forum: Safety with Chemicals
- Topic: Omega or Chemwatch, that is the question!
- Replies: 1
- Views: 1541
Omega or Chemwatch, that is the question!
Hi All We use the Omega CD as we have had trouble in the past with Chemwatch. Is this OK? Has anyone used both, and if so, which do you prefer? We do our annual audit on chemwatch and use the site for MSDS if needed but other than that we don't go near it. Any advice would be good as we are at an in...
- 29 Aug 2013, 14:56
- Forum: Biology, Physics...
- Topic: growing pond weed
- Replies: 2
- Views: 2141
growing pond weed
I have not been able to find pond weed to replace Elodea. NSW schools cannot use it as it is banned in this state.
What are peolpe using when you do the pracs to look at the "Products of Photosynthesis" and "The rate of photosynthesis" Science Focus 2.
Thanks
Glenpaul
What are peolpe using when you do the pracs to look at the "Products of Photosynthesis" and "The rate of photosynthesis" Science Focus 2.
Thanks
Glenpaul
- 16 Jul 2013, 14:30
- Forum: Biology, Physics...
- Topic: electrophoresis kits
- Replies: 7
- Views: 12355
electrophoresis kits
Where is the best place to purchase a good electrophoresis kit and will we be able to replenish the chemicals each year?
- 30 Apr 2013, 13:48
- Forum: Miscellaneous
- Topic: Data Loggers
- Replies: 1
- Views: 1746
Data Loggers
We have always used Data Harvest data loggers and they have been fine but we are at the point where we probably need to buy a lot more sensers and so I would like to look at Pasco loggers before we commit more money. Does anyone have am opinion on them?
- 30 Apr 2013, 13:40
- Forum: Recipes and Pracs
- Topic: split pea DNA
- Replies: 16
- Views: 17195
Banana DNA
Thanks for the replies re: split pea DNA but I have switch to using bananas instead of split peas and I don't need the meat tenderiser. it was very successful.
- 29 Apr 2013, 14:13
- Forum: Recipes and Pracs
- Topic: split pea DNA
- Replies: 16
- Views: 17195
split pea DNA
Has anyone used split peas to extract DNA and if so, can you lift the DNA out of the solution.
- 14 Mar 2013, 13:36
- Forum: Recipes and Pracs
- Topic: iodine for photosynthesis
- Replies: 4
- Views: 2464
iodine for photosynthesis
Hi - its an age old question but I need to ask it again. What recipe do you use to make your iodine for the Starch in leaves prac? yr 11 Bio
- 07 Mar 2013, 13:55
- Forum: Recipes and Pracs
- Topic: Diffusion and osmosis prac yr 11
- Replies: 6
- Views: 3976
Re: Diffusion and osmosis prac yr 11
Thanks RosalieM
I have increased the concentration of the starch sol and it hasn't changed the level up the thistle funnel but i will keep 1 setup for a few days and see if there is any change.
I have increased the concentration of the starch sol and it hasn't changed the level up the thistle funnel but i will keep 1 setup for a few days and see if there is any change.
- 07 Mar 2013, 13:02
- Forum: Recipes and Pracs
- Topic: Diffusion and osmosis prac yr 11
- Replies: 6
- Views: 3976
Diffusion and osmosis prac yr 11
Hi We have been doing the Heinemann 2.6 Investigation "Diffusion and Osmosis " and the part with the starch/ iodine exp has caused us some grief. I had the starch as required -5%- and loaded the dialysis tube as instructed then placed it a in a gas jar of dilute iodine/potassium sol. The s...