We have a teacher wanting to do the AccessNano/TechNYou "Making Gold Nanoparticles" experiment.
It calls for gold hydrogen tetrachloride (Chloroauric acid) HAuCl4.3H2O.
I can't find it anywhere. Any clues where to get it easily, how much it costs or if it is a mixture?
Search found 56 matches
- 04 Aug 2014, 10:11
- Forum: Recipes and Pracs
- Topic: Making Gold Nanoparticles
- Replies: 8
- Views: 5022
- 28 Mar 2014, 12:52
- Forum: Chemistry and Labware - General
- Topic: Kinetic Theory in Action - NaHSO3
- Replies: 3
- Views: 2248
Re: Kinetic Theory in Action - NaHSO3
Text book P273 Addison-Wesley: Chemistry, prentice hall, Matta etal, 2002.
Students generate different gases and use indicators to visualise gas diffusion. Different solutions are dropped on a petri dish in a patter and drops change colour as gas diffuses.
Students generate different gases and use indicators to visualise gas diffusion. Different solutions are dropped on a petri dish in a patter and drops change colour as gas diffuses.
- 28 Mar 2014, 12:07
- Forum: Chemistry and Labware - General
- Topic: Kinetic Theory in Action - NaHSO3
- Replies: 3
- Views: 2248
Kinetic Theory in Action - NaHSO3
Our Yr11Chem prac "Kinetic Theory in Action" requires NaHSO3 (sodium hydrogensulfite / sodium bisulfite), but this chemical is hard to find or not easy to order.
Can anyone tell me where they get their NaHSO3 from, or if you subsitute something else for it in the prac?
Annette.
Can anyone tell me where they get their NaHSO3 from, or if you subsitute something else for it in the prac?
Annette.
- 18 Mar 2014, 14:24
- Forum: Chemistry and Labware - General
- Topic: Tracking of dataloggers
- Replies: 2
- Views: 2022
Re: Tracking of dataloggers
Mainly students use them for pracs, but occasionally a teacher or another department borrows them. We have them numbered. Sometimes they come and go every lesson for different pracs, some students keep them running on an experiment over a couple of lessons. There are just so many variances that can ...
- 18 Mar 2014, 14:06
- Forum: Chemistry and Labware - General
- Topic: Tracking of dataloggers
- Replies: 2
- Views: 2022
Tracking of dataloggers
Hi everyone, Just after some ideas for keeping a track of dataloggers. We have 22 of them which are used by various classes all the time. We always seem to be missing some at the end when all the pracs/EEIs are finished and we end up running around looking everywhere for them until they are found. T...
- 25 Oct 2013, 12:36
- Forum: Recipes and Pracs
- Topic: Extracting caffeine from Tea
- Replies: 4
- Views: 2985
Re: Extracting caffeine from Tea
We don't have CSIS here in Qld, so can't refer to it. We are told to read the SDS and make a decision from that. It is classed as a Toxic substance, and the material and container must be disposed of a hazardous waste, therefore deemed by us as a chemical not to be used in a school. From RiskAssess:...
- 25 Oct 2013, 09:43
- Forum: Recipes and Pracs
- Topic: Extracting caffeine from Tea
- Replies: 4
- Views: 2985
Extracting caffeine from Tea
Hi,
Does anyone have a prac for Extracting Caffeine from Tea (which doesn't use a banned chemical like Dichloromethane)?
Annette.
Does anyone have a prac for Extracting Caffeine from Tea (which doesn't use a banned chemical like Dichloromethane)?
Annette.
- 23 May 2013, 14:10
- Forum: Recipes and Pracs
- Topic: Borax supply
- Replies: 9
- Views: 4161
Re: Borax supply
We can get it at Coles here in QLD (pink lid variety), but it can be ordered through chemical suppliers as Sodium tetraborate decahydrate.
(It works well in the washing machine - good for removing stains!)
(It works well in the washing machine - good for removing stains!)
- 06 May 2013, 21:54
- Forum: Chemistry and Labware - General
- Topic: pH meter calibration
- Replies: 4
- Views: 2127
pH meter calibration
Hi all, Just wanting some advice. Biology soil testing EEI starts tomorrow. Brand new and hardly used pH meters were put in buffer solution 4 & 7 today. We had readings of 4.01-4.10 and 7.01-7.08. Is this acceptable? We (labbies) think so, but HOD thinks they need calibrating so that they all re...
- 06 May 2013, 11:43
- Forum: Recipes and Pracs
- Topic: split pea DNA
- Replies: 16
- Views: 18163
Re: split pea DNA
We blend dry split peas to a powder. Carry out the experiment as directed the rest of the way. We use a glass hook to pull out the DNA strands.
- 28 Mar 2013, 14:14
- Forum: The Lab Tech Position
- Topic: EEI bookings - notice given
- Replies: 10
- Views: 6708
Re: EEI bookings - notice given
Thanks everyone! EEI Prac Order form is a goer!
- 21 Mar 2013, 11:50
- Forum: The Lab Tech Position
- Topic: EEI bookings - notice given
- Replies: 10
- Views: 6708
Re: EEI bookings - notice given
Thanks for that! Great ideas. We find students never order enough and we are always playing catchup. Or they don't like sharing and keep it all for themselves or use other people's stuff! Does anyone make up bulk sucrose or NaCl solutions at a stock % and get the student's to do their own dilutions?
- 21 Mar 2013, 08:56
- Forum: The Lab Tech Position
- Topic: EEI bookings - notice given
- Replies: 10
- Views: 6708
Re: EEI bookings - notice given
Yep, we have 45+ individual or 20+ group EEIs.......
- 20 Mar 2013, 18:06
- Forum: The Lab Tech Position
- Topic: EEI bookings - notice given
- Replies: 10
- Views: 6708
Re: EEI bookings - notice given
Thanks everyone. I agree, more than 48 hours is required due to the individual requirements for each person or group. Trying to work out a process going forward to meet teacher, student and labbies expectations so that it all works smoothly.
- 20 Mar 2013, 13:38
- Forum: The Lab Tech Position
- Topic: EEI bookings - notice given
- Replies: 10
- Views: 6708
EEI bookings - notice given
Just wondering how much notice you ask your teachers to give you for EEIs?
Do you stick to the usual 48hours as for pracs, or do you have a different set timeframe for EEIs?
Do you stick to the usual 48hours as for pracs, or do you have a different set timeframe for EEIs?
- 18 Oct 2012, 12:16
- Forum: Recipes and Pracs
- Topic: Prac booking system
- Replies: 9
- Views: 3599
Re: Prac booking system
Thanks for all that! Very interesting with all the extra uses for the system.
- 17 Oct 2012, 12:58
- Forum: Recipes and Pracs
- Topic: Prac booking system
- Replies: 9
- Views: 3599
Re: Prac booking system
Thanks! We have a system designed by a previous IT staff member. It is starting to breakdown and the time involved to fix, manage and maintain it is too great for our current IT members......
- 17 Oct 2012, 10:11
- Forum: Recipes and Pracs
- Topic: Prac booking system
- Replies: 9
- Views: 3599
Prac booking system
Hi everyone,
Our in-school online booking system is on it's last legs. What commercially available program (if any) do you use for teachers to book pracs?
Thanks!
Our in-school online booking system is on it's last legs. What commercially available program (if any) do you use for teachers to book pracs?
Thanks!
- 29 Sep 2012, 17:45
- Forum: Sourcing Materials & Eq Repairs
- Topic: Suppliers
- Replies: 9
- Views: 4189
Re: Suppliers
Thanks. We use Scientriffic quite a bit. The label maker from Omega is great and the asset organiser looks good too.
- 26 Sep 2012, 21:10
- Forum: The Lab Tech Position
- Topic: CERT 111 IN LAB SKILLS
- Replies: 10
- Views: 4976
Re: CERT 111 IN LAB SKILLS
Almost finished my Cert IV Lab Techniques through Symbio. I got credits for some of the units in my Cert III Lab Skills I had already done. The units of study are rolled up in 6 workplace projects and have been easy to do in work time. Our trainer from Symbio visits about once a month and he has bee...