The stir rate can’t be adjusted on the setup page for all the sleeves except the assembled sleeve coming with the eVOLVER package (I think we should assemble the sleeves correctly). When I set the stir rate to different numbers, it seems that the real stir rates in the sleeve are the same, but i can stop stirring in all sleeves by setting the stir rate to 0.
And another question regarding stir rate is what the numbers of stir rate mean? like, what rpm do the numbers of stir rate represent? This would be very useful to choose different stir rates for different culture volume, which should decrease the influence of stirring on OD readings.
The stir rates are not calibrated to RPM. They are at an arbitrary value since it depends on on the stir bar used. One way to check the RPM is to stir a vial of water (or something with the same viscosity as your media) and measure with a high speed camera (e.g. on a normal smart phone).
If the stir rate is toggle-able ON or OFF (0 or not), then it is working properly. The stir rate different might not be obvious.
The stir rate difference for different number is very obvious for the assembled sleeve coming the eVOLVER package (even between 1 and 3), but not for other sleeves we assembled (almost no difference for 1 and the maximum 15).
