Search found 10 matches
- 11 Jun 2015, 09:08
- Forum: Chemistry and Labware - General
- Topic: Year 12 Sulfate Content of Lawn Fertiliser Prac.
- Replies: 4
- Views: 3308
Re: Year 12 Sulfate Content of Lawn Fertiliser Prac.
Dose the fertilizer with extra sulfates
- 07 May 2015, 15:10
- Forum: Recipes and Pracs
- Topic: Silver Chloride
- Replies: 6
- Views: 3546
Re: Silver Chloride
Sometimes they just don't understand that things like this aren't possible with the equipment we have or the reality of the substance they want dissolved in this case.
- 07 May 2015, 10:49
- Forum: Recipes and Pracs
- Topic: Silver Chloride
- Replies: 6
- Views: 3546
Re: Silver Chloride
Silver Chloride is virtually insoluble
Silver chloride is so insoluble in water (.0.002 g/L) that a saturated solution contains only about 1.3 x 10-5 moles of AgCl per liter of water.
Silver chloride is so insoluble in water (.0.002 g/L) that a saturated solution contains only about 1.3 x 10-5 moles of AgCl per liter of water.
- 06 Mar 2015, 11:00
- Forum: Recipes and Pracs
- Topic: Ammonium Nitrate is a NO NO
- Replies: 3
- Views: 2717
Re: Ammonium Nitrate a NO NO
If you don't need analytic results less measuring one you and just put 1-3 teaspoons of solid Bi-carb and solid Citric Acid in the zip lock bag and add enough water to get it wet and mix it by squeezing. Also makes a good emergency ice pack for sports injuries. Be cafeful that the zip lock bag isn't...
- 18 Feb 2015, 13:32
- Forum: The Lab Tech Position
- Topic: Labbie Hours v's Number of Students
- Replies: 20
- Views: 18537
Re: Labbie Hours v's Number of Students
1100 Students 7-12
3 year 12 Bio
1 year 12 of each physics chem and senior science
3 year 11 Bio
1 year 11 of each physics chem and senior science
11 Science Teachers
5 labs
3 prep rooms
Just me 30hrs per week (permanent part time)
Science only
this week averaging 14+ pracs per day
3 year 12 Bio
1 year 12 of each physics chem and senior science
3 year 11 Bio
1 year 11 of each physics chem and senior science
11 Science Teachers
5 labs
3 prep rooms
Just me 30hrs per week (permanent part time)
Science only
this week averaging 14+ pracs per day
- 17 Nov 2014, 07:55
- Forum: Chemistry and Labware - General
- Topic: Safety Goggles
- Replies: 4
- Views: 3010
Re: Safety Goggles
We have the discovery safety glasses from westlab $3.20 per pair - Haven't noticed and breakage issues with then this year. we also have some of the old large glasses the ones that go over everyday glasses for those that require them but they are quite old and break a lot at the arms.
- 25 Jul 2014, 14:47
- Forum: Safety with Chemicals
- Topic: Risk Assessments
- Replies: 10
- Views: 4133
Re: Risk Assessments
The Risk Assessment here is the way they book pracs. No risk assessment no booking no prac - Lucky have HOD support and department support with this.
- 26 Jun 2014, 09:10
- Forum: Recipes and Pracs
- Topic: agar 750 or agar 1000
- Replies: 26
- Views: 9677
Re: agar 750 or agar 1000
The Solution is usually about 60C and I use 15g Agar to 1000mL
- 25 Jun 2014, 11:46
- Forum: Recipes and Pracs
- Topic: agar 750 or agar 1000
- Replies: 26
- Views: 9677
Re: agar 750 or agar 1000
I use 1000 for all my plates and haven't had a problem with them not setting this year.
- 24 Jun 2014, 14:01
- Forum: Recipes and Pracs
- Topic: agar 750 or agar 1000
- Replies: 26
- Views: 9677
Re: agar 750 or agar 1000
Maybe gel strength rating was it the 750 that wasn't setting?