RagingBull
Well-Known Member
- Joined
- 21/2/09
- Messages
- 97
- Reaction score
- 1
Afternoon brewers,
I'd recently purchased a 5L Erlenmeyer flask (with wide mouth) from a science for kids type online shop - due to it being the cheapest one I could source on the net and also confirming by prior email that it had a flat bottom.. This may be one for the adage: buy cheap buy twice...
I was keen to get the flask out and give it a test run - then immediately noticed it had a Ø10mm x 3mm hemisphere pointing upward in the centre of the bottom of the flask; naturally affecting the central placement of the 25mm oval shaped stir bar I possess.
I'm hoping the ahb community may have some remedial advice on any of the following.
Worst-case I can just return and source elsewhere, but if there is a solution I'd be keen to try.
- Do your own 5L flasks have the same issue on the bottom? If so - do you position your stirplate away from it with success?
- I've read the bar-bell type stir bars may be a solution? anyone here had success?
- Get stronger magnets to hold it down in the middle
- Should the above not work - Any other ideas?
Cheers,
edit: "- Get stronger magnets to hold it down in the middle"
I'd recently purchased a 5L Erlenmeyer flask (with wide mouth) from a science for kids type online shop - due to it being the cheapest one I could source on the net and also confirming by prior email that it had a flat bottom.. This may be one for the adage: buy cheap buy twice...
I was keen to get the flask out and give it a test run - then immediately noticed it had a Ø10mm x 3mm hemisphere pointing upward in the centre of the bottom of the flask; naturally affecting the central placement of the 25mm oval shaped stir bar I possess.
I'm hoping the ahb community may have some remedial advice on any of the following.
Worst-case I can just return and source elsewhere, but if there is a solution I'd be keen to try.
- Do your own 5L flasks have the same issue on the bottom? If so - do you position your stirplate away from it with success?
- I've read the bar-bell type stir bars may be a solution? anyone here had success?
- Get stronger magnets to hold it down in the middle
- Should the above not work - Any other ideas?
Cheers,
edit: "- Get stronger magnets to hold it down in the middle"