Borosilicate Watch glasses

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bigmack
Posts: 816
Joined: 15 Dec 2015, 10:49
Job Title: Lab Technician
School: FCAC
State/Location: QLD

Borosilicate Watch glasses

Post by bigmack »

Does anyone know where to get these ?
I just got quoted $285 +GST for a pack of 10 8O

Edit: sorry 125mm
Ines
Posts: 25
Joined: 23 Mar 2012, 13:56
State/Location: NSW

Re: Borosilicate Watch glasses

Post by Ines »

Hi bigmack,
Try Modern Teaching Aids
https://www.teaching.com.au/search?acti ... atch+glass
Very reasonably priced, I am thinking of getting ammeters from there too.
Ines
bigmack
Posts: 816
Joined: 15 Dec 2015, 10:49
Job Title: Lab Technician
School: FCAC
State/Location: QLD

Re: Borosilicate Watch glasses

Post by bigmack »

Thanks Ines
They seem to be Soda glass .Seems that's what all our regular suppliers have .
I was looking for Pyrex ( Borosilicate ) ones as we have been having a lot crack when they do a prac where they are on a beaker of water heated with a Bunsen with Ice cubes in them .

HT has now decided that its going to be cheaper to loose a few to cracking than spend over $30 each for Pyrex ones.
Another teacher has just mentioned that she never cracks them because she tells the kids to put a bit of water in the watch glass with the Ice cubes .
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