Search found 503 matches
- 12 Dec 2012, 12:28
- Forum: Safety with Chemicals
- Topic: Burning prac
- Replies: 11
- Views: 4236
Re: Burning prac
Some fuels are going to be placed in crucibles, others in watch glasses. We don't have spirit burners. :oops: Joy We have some "home made" spirit burners here. They are made out of glass vials. a piece of class tube is pushed through a cork in the top and then venetian blind cord pushed t...
- 26 Oct 2012, 14:44
- Forum: Sourcing Materials & Eq Repairs
- Topic: Help in identifying equipment
- Replies: 8
- Views: 3898
Re: Help in identifying equipment
Thankyou.
....but it LOOKS like a metre rule with holes drilled in it!!!
Have a great weekend!
Ian
....but it LOOKS like a metre rule with holes drilled in it!!!
Have a great weekend!
Ian
- 26 Oct 2012, 10:02
- Forum: Chemistry and Labware - General
- Topic: Ferrous Chloride solution
- Replies: 7
- Views: 2940
Re: Ferrous Chloride solution
I have a little bottle of FeCl 2 x H 2 O from Chem Supply and a large bottle of FeCl 2 .4H 2 O from Unilab. The FeCl 2 x H 2 O is labeled as 126.75 g/mol which is the same answer that you get when you add the weighs of one Fe plus 2 Chlorines together. The FeCl 2 .4H 2 O is labeled as 198.81 g/mol. ...
- 25 Oct 2012, 13:35
- Forum: Miscellaneous
- Topic: Solar Eclipse
- Replies: 8
- Views: 3471
Re: Solar Eclipse
Yeah! Most of the Science Staff (EXCEPT ME!!!!!) are going on a week long excursion with 50 kids, to FNQ (Cairns, I think) to view it. When they have finished looking at the eclipse, they get to tour a rainforest and go snorkelling on the reef. The kids pay extra so that the teachers can go for free...
- 25 Oct 2012, 13:27
- Forum: Miscellaneous
- Topic: How to make nutrient agar
- Replies: 24
- Views: 10052
Re: How to make nutrient agar
The recipe that I have used for the last 6 years (from Manual for Science Assistants, (dated 4 BC!)) Calls for 5g Peptone, 5g NaCl, 2g Vegemite, 1g Bonox and 15 g Agar for 1 Litre of mixture. It always works well. This time I made it with everything EXCEPT the peptone, and we barely got any cultures...
- 25 Oct 2012, 13:09
- Forum: Sourcing Materials & Eq Repairs
- Topic: Help in identifying equipment
- Replies: 8
- Views: 3898
Re: Help in identifying equipment
If you have the Capstan Blocks, you should also have a lot of 1meter wooden rulers with small holes drilled all the way down the centre, which will fit the metal rod that you mentioned. The Capstan Block fits on to a Retort Stand and is secured by one of the screws. Even without the "Simple Mac...
- 18 Oct 2012, 07:46
- Forum: Miscellaneous
- Topic: How to make nutrient agar
- Replies: 24
- Views: 10052
Peptone or Pepsin?
Hi all, I need to make up about 100 agar plates for Monday. The recipe that I usually use asks for 5g/L of Peptone. It seems that either I have misplaced or somebody has swiped my bottle of peptone! I have half a dozen bottles of Pepsin. Does anybody know 1. how essential is the Peptone? 2. Can I su...
- 17 Oct 2012, 10:23
- Forum: Chemistry and Labware - General
- Topic: Dissolving Iron with Alum?
- Replies: 0
- Views: 1824
Dissolving Iron with Alum?
Hi all you chemistry buffs out there! Someone asked me about the fumes given off when they tried to dissolve a broken off steel screw out of a brass fitting. I have no idea what the fumes are, but I don't even understand the reaction. Alum is Potassium Aluminium Sulfate. Brass is an alloy of Copper ...
- 22 Aug 2012, 15:22
- Forum: Recipes and Pracs
- Topic: Litmus ??
- Replies: 10
- Views: 3798
Re: Litmus ??
Hey Lada, Don't hide away in that Prep Room too long. We need you out here helping the rest of us!lada wrote:Thanks, Ian,
I wish her all the best and crawl into my little prep room.
Lada
All the best
Ian
- 22 Aug 2012, 12:58
- Forum: Recipes and Pracs
- Topic: Litmus ??
- Replies: 10
- Views: 3798
Re: red litmus
silly but I thought WHY? WHY BOTHER? then I thought well make up litmus solution with the normal blue litmus powder and add acid to make it red.... That's what I did. My Red Litmus solution is just blue Litmus Solution with a dash of HCl added until it goes red. It works for me! Oh, Lada: Merilyn i...
- 02 Aug 2012, 13:36
- Forum: Sourcing Materials & Eq Repairs
- Topic: Food in labs
- Replies: 34
- Views: 12623
Re: Food in labs
"No Comment" on the grounds that I might incriminate myself/my science department!ri wrote:Can I ask my colleagues what rules they have regarding food in labs - students snacking or food tasting experiments??
~Robyn
Cheers
Ian
- 21 Jun 2012, 08:57
- Forum: Recipes and Pracs
- Topic: Classification and ecosystems
- Replies: 10
- Views: 4264
Re: Classification and ecosystems
We do the dry pasta too. We then move on to the bottled biological specimens!
Ian
Ian
- 23 May 2012, 13:33
- Forum: Sourcing Materials & Eq Repairs
- Topic: plastic butettes
- Replies: 12
- Views: 4139
Re: plastic butettes
Acrylic ones at Serrata, also!
Ian
Ian
- 18 May 2012, 11:41
- Forum: Miscellaneous
- Topic: Dataloggers
- Replies: 31
- Views: 9756
Re: Who uses Data Loggers?
. If we sit them all in the same solution, none of the readings are even close. :mad: :mad: I can understand that the pH meters may be old and useless, but the probes for the data loggers are brand new, and the instructions say that for basic operation they do not need to be calibrated. :? Julie Ou...
- 02 May 2012, 13:35
- Forum: Miscellaneous
- Topic: Mobile Phones
- Replies: 8
- Views: 3157
Re: Mobile Phones
Interesting question! At the school where I work, I think that the rule seems to be that the kids should keep phone calls to a minimum while in class! I have often seen kids with ear phones in their ears in class, and commonly see kids standing in the middle of the playground talking on their phones...
- 02 May 2012, 11:34
- Forum: Biology, Physics...
- Topic: Disposal of Dissection Material
- Replies: 10
- Views: 3789
Re: Disposal of Dissection Material
Our garbage is only collected once a week, so I put all the dissection rubbish into a chest freezer until the afternoon before collection day, and then (usually) forget to put it in the big bins before I go home. (at the moment, my chest freezer is getting a bit full!)
Ian
Ian
- 02 May 2012, 11:30
- Forum: Safety with Chemicals
- Topic: WHAT are new rules on culturing micro-organisms
- Replies: 55
- Views: 17959
Re: WHAT are new rules on culturing micro-organisms
Ocean Breeze, I would not be BOILING the peppercorn broth, as that would kill the bacteria. Just leave it for a couple of days in room temp water and strain off the liquid. Rosaliemb, I don't have an oven to sterilise my cotton wool swabs. Do you think a Microwave would work? Any other ideas about h...
- 27 Apr 2012, 14:03
- Forum: Miscellaneous
- Topic: Advancing up Levels
- Replies: 24
- Views: 8347
Re: Advancing up Levels
Reading through this thread, I am very jealous of all you Chemistry type people! I was a Physics teacher (with a smattering of Biology) for 12 years, and actively avoided ALL things chemical! ...then I ended up as a Lab Techie, where Chemistry is my main focus. What a steep learning curve!!!! My Phy...
- 26 Apr 2012, 09:36
- Forum: Chemistry and Labware - General
- Topic: thermometer in dishwasher
- Replies: 4
- Views: 1877
Re: thermometer in dishwasher
If they are the standard 0-110 degree C thermometers, it should not be a problem if they are placed in the glassware tray at the top. We have some thermometers that only go up to 50 deg. They would not cope with dishwasher temperatures!
cheers
Ian
cheers
Ian
- 05 Apr 2012, 10:23
- Forum: Announcements
- Topic: My Last Day Today
- Replies: 7
- Views: 4678
Re: My Last Day Today
Good luck!
We will miss you Merilyn! Keep in touch!
I guess, as long as our kids are in the same school, we will cross paths! Just make sure that you come and say "Hello" cos I am blind as a bat, and probably won't see you unless you are close!
Happy Easter!
Ian
We will miss you Merilyn! Keep in touch!
I guess, as long as our kids are in the same school, we will cross paths! Just make sure that you come and say "Hello" cos I am blind as a bat, and probably won't see you unless you are close!
Happy Easter!
Ian