Maybe someone can help me with this. I finally popped for a 2L Erlenmeyer flask for yeast starters. I got it at the homebrew shop. I've never had a problem with my 1L flask, but with the 2L the stir bar will fly off to the side of the bottom instead of spinning in the middle. I guess there must be a slight crown in the bottom, but I can't believe mine is much different than others. I have tried centering the bar on the bottom with my magnet and then carefully setting it on the plate and then turning it on - this has worked sporadically but more often than not the bar still flips off to the side and remains stationary.
Any ideas? I really don't want to buy yet another one.
Any ideas? I really don't want to buy yet another one.