Search found 711 matches
- 03 May 2023, 18:58
- Forum: Recipes and Pracs
- Topic: HELP
- Replies: 17
- Views: 9804
Re: HELP
Metho is fine Rosalie . Trick is getting the right distance between the spirit burner flame and the star . Blocks of wood etc work but are a pain . We ended up getting some adjustable jacks to lift the burners up under the tripods . You can buy them from usual suppliers for about $70 .-$100 each . I...
- 03 May 2023, 17:53
- Forum: Chemistry and Labware - General
- Topic: electrolysis of water
- Replies: 8
- Views: 5192
Re: electrolysis of water
Sounds like there is a break in one of the electrodes Rosalie . When its working , there should be a fury of bubbles coming off each electrode . It looks like fizzy drink . Can you check the continuity between the platinum and the bare copper wire on both .A multimeter or simply a light bulb and a p...
- 16 Mar 2023, 09:51
- Forum: Chemistry and Labware - General
- Topic: What is a product you always wished you could see in the lab?
- Replies: 12
- Views: 4735
Re: What is a product you always wished you could see in the lab?
My glasses , when I put them down some where
- 16 Mar 2023, 09:10
- Forum: Sourcing Materials & Eq Repairs
- Topic: Reduction Tube
- Replies: 3
- Views: 2566
- 16 Mar 2023, 09:06
- Forum: Sourcing Materials & Eq Repairs
- Topic: trundle wheel
- Replies: 13
- Views: 4571
Re: trundle wheel
Kathryn I'm also in the market for another one but agree that all the plastic junk available from our regular suppliers wouldn't last five seconds with our lot . We have an old Lufkin one and it's still going . Have found them available from Total tools and other big tool shops .Not the cheapest @ $...
- 09 Mar 2023, 13:54
- Forum: Sourcing Materials & Eq Repairs
- Topic: Wheatstone bridge
- Replies: 14
- Views: 3948
Re: Wheatstone bridge
Each one is a basically a Rheostat. You need two to make a wheatstone bridge .
Could do same thing with normal Rheostats .
Could do same thing with normal Rheostats .
- 09 Mar 2023, 10:35
- Forum: Sourcing Materials & Eq Repairs
- Topic: Wheatstone bridge
- Replies: 14
- Views: 3948
Re: Wheatstone bridge
probably someone that appreciates Steampunk stuff would love them Where would I find such a person? (Or is that a joke that flew over my head??) Not a joke Rosalie. Steampunk is quite a passion for some folk . They love old school Wood,brass,copper Leather etc . Some are quite artistic with it . No...
- 09 Mar 2023, 09:04
- Forum: Sourcing Materials & Eq Repairs
- Topic: Wheatstone bridge
- Replies: 14
- Views: 3948
Re: Wheatstone bridge
probably someone that appreciates Steampunk stuff would love them
- 08 Mar 2023, 12:05
- Forum: Sourcing Materials & Eq Repairs
- Topic: Wheatstone bridge
- Replies: 14
- Views: 3948
Re: Wheatstone bridge
Is it these things Rosalie ? .
Dragged out from the back of the Physics cupboard. Couple of variations , but they all do the same thing . There's a piece of Nichrome wire on the ruler . No ones ever asked for them while I've been here
Dragged out from the back of the Physics cupboard. Couple of variations , but they all do the same thing . There's a piece of Nichrome wire on the ruler . No ones ever asked for them while I've been here
- 28 Feb 2023, 11:33
- Forum: Safety with Chemicals
- Topic: printers
- Replies: 9
- Views: 3528
Re: printers
I have a B/W laser printer in Staff room which is a reasonable walk but most of the time I'm needing Colour stuff and have to walk 4 flights of stairs and the other side of the school . I have to ring the Printroom , see if they are using the Colour printer and then make sure the Bypass tray is not ...
- 16 Feb 2023, 13:19
- Forum: Chemistry and Labware - General
- Topic: Sodium Dichromate for cleaning glassware
- Replies: 23
- Views: 10832
Re: Sodium Dichromate for cleaning glassware
I had dozens and dozens of them Rosalie. I'd attempt to clean them when I had a chance .A year later they were mostly still there . Sometimes you just gotta do what you know you really need to do . :thumbup: I binned them and bought new ones \:D/ Well actually , I kept a few of the better ones for N...
- 07 Feb 2023, 12:35
- Forum: Sourcing Materials & Eq Repairs
- Topic: Cleaning retort clamps
- Replies: 7
- Views: 3240
Re: Cleaning retort clamps
Do they have a sand blasting equipment in TAS dept ?
- 02 Feb 2023, 14:24
- Forum: Recipes and Pracs
- Topic: Tea Bag Prac.... need help
- Replies: 8
- Views: 3474
- 02 Feb 2023, 14:23
- Forum: Recipes and Pracs
- Topic: Tea Bag Prac.... need help
- Replies: 8
- Views: 3474
- 02 Feb 2023, 12:37
- Forum: Recipes and Pracs
- Topic: Tea Bag Prac.... need help
- Replies: 8
- Views: 3474
- 02 Feb 2023, 11:14
- Forum: Recipes and Pracs
- Topic: Tea Bag Prac.... need help
- Replies: 8
- Views: 3474
Tea Bag Prac.... need help
I've been asked for teabags to do the Tea bag prac. You remove the staple , empty the bag , form it into a tube and light the top .It sits there for a while and slowly lifts off the bench . Now last time I got tea bags but they had no staples and even though they carefully cut the top and bottom off...
- 13 Dec 2022, 11:27
- Forum: Chemistry and Labware - General
- Topic: White crystal around sodium hydroxide solution bottles
- Replies: 14
- Views: 7313
Re: White crystal around sodium hydroxide solution bottles
A smear of Silicone grease on the tapered lids usually stops this happening .It lso stops the lids fusing on .
- 08 Dec 2022, 11:47
- Forum: Miscellaneous
- Topic: Microwave Demonstration Equipment
- Replies: 2
- Views: 2907
Re: Microwave Demonstration Equipment
I'm guessing you are talking about metal plates, grills etc They can just go into scrap metal bin if you have one .
If you also have the Wax prisms and lenses, can't see any issue with putting in general waste.
As far as the transmitter/ receivers go , it's just e-waste .
If you also have the Wax prisms and lenses, can't see any issue with putting in general waste.
As far as the transmitter/ receivers go , it's just e-waste .
- 02 Dec 2022, 11:11
- Forum: Recipes and Pracs
- Topic: Senses Boxes
- Replies: 2
- Views: 2934
Re: Senses Boxes
Thanks Rosalie.
Personally I like the idea of petri dishes and essential oils . It would take up less storage space .
I may look at switching some of mine to what you are using . The Camphor smell is really strong and tends to overpower the others ,especially if left uncovered for too long.
Personally I like the idea of petri dishes and essential oils . It would take up less storage space .
I may look at switching some of mine to what you are using . The Camphor smell is really strong and tends to overpower the others ,especially if left uncovered for too long.
- 01 Dec 2022, 14:16
- Forum: Recipes and Pracs
- Topic: Senses Boxes
- Replies: 2
- Views: 2934
Senses Boxes
Was packing these up and thought I might share . These were something I was asked to make a few years ago .At the time I thought it was a bit lame , but they have been used over and over .There are four of each . One is a tactile feel box . It has four holes that kids stick thier finger in and expla...