Australia's Science Forum

Looking at purchasing new Power supplies (Transformers). We have a few of the Brand- IEC - General type, 2-12V, 5,5A,AC/DC. Which retail at $159 from Serrata. I have noticed that Serrata also have a cheaper Power supply @ $99.50, Brand- POPULAR General type, 2-12V, 5,5A,AC/DC. Has anyone purchased t...

You can buy them from Labtek - 50 in a pack

Smiley.

You cut the rim of the glass like you are cutting a piece of paper.
You will be very surprised how sharp the sissors will be.
It works, I have been doing this for years.

Cindy

Get a glass jar or beaker and cut the rim of the jar or beaker with the sissors and they will become nice and sharp.

Cindy

Our old IEC Water Still has died. I would like to know what type of water still people have? I see that 'Omega' have one called Water Still 4Lt/Hr non glass design. Also 'Serrata' have a Stainless Steel 4.5Lt/Hr. Does anyone have these and are they ok?

Look forward to your replies

Cindy

Yes I agree with you Fibreweb. I would like it in black & white from the Department before starting to do it.

Thanks everyone

Having a mental blank.
The old Ammonia bottle we had was 10%.
On the new bottle we purchased says Ammonia solution 18%. How much of the 18% Ammonuia do I need to make a 1M solution?
Thanks

Can anyone recommend a pH meter.
Needs to be Staff & Student friendly.

The old ones are pass their due by date.

Thanks Cindy

Gday Nicky

All good here in sunny Narrabri. Yeh Galvo & Knighty still here. Jenny said to say hello.

Cindy

We are going to buy some new monocular microscopes for Yr7-Yr10 students to use. HT wants to know if anyone has brought some in the last 12 months & are they any good and if so what brand/model etc

Thanks
Cindy

Printing MSDS & labels is fine, but as for the other stuff it is a pain in the backside. I printed off User guide and still can't make heads or tails of it. (Wasted a lot of time - Not Happy!!!) Think I will stick to my spreadsheet.

I have 4 x 200ml bottles labelled "Alcohol specially denatured". Can you tell what it is ??? I thought maybe Methanol /Ethanol combo, but I'm not sure. (Bottles have been here for a long time.)

Gday Rosalie,

Kemproof Industries checks our fume cupboards. They have always come and checked it since we had it installed years ago. We have had another 2 put in with the lab upgrades and the bloke checked them as well. He checked them in March this year.

Cindy

Gday Nicky,
Nothing has changed, it is still bloody hot here at Narrabri. The old Air Con doesn't work well. The other day it was still 30+ here in the Prep rm with them going. We tried to get split systems when they did the upgrades but they wouldn't come to the party.

Re the use of Cobalt chloride.
Why is Cobalt chloride only a Green labelled chemical ? When you read the Health info it says 'May cause Cancer by inhalation'. I'm not keen to use it. - Cindy

Just to let you know that Ammonia didn't do anything BUT 'Gumption' removed it. Thanks for you help - Cin

Any ideas on how to get Silver nitrate stain off the door (white plastic) on the dishwasher ???? I've tried Sodium thiosulphate and it did not work. - Cindy

I've put the following in each of the new work stations: 3x50ml glass Beakers ,2x150ml glass Beaker, 4x 250ml glass Beakers , 2x 250ml Plastic Beakers, Bench mat, Bunsen burner, Funnel,Gas jar, Gauze mat, 2x Plastic Mcyclinders, 2 x Plastic M.cyclinders, 2x Glass M.cyclinder, 1x Plastic 500ml M.Cycl...

Same here Wendy, labs nearly finished but not before we go on holidays. Seeing if they will let me come in the last week of hols and get labs in some sort of order. Then take the days I work in lieu during the year.

Have a great break everyone
Cin