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Biological Stirrer FAQs
Q: Is it possible to re-siliconize the stirrer bottles?
A: Yes, standard solutions for siliconizing glassware can be used, such as SigmaCote® from Sigma Aldrich. The bottles and stirrers are cleaned, dried and then the neat siliconizing agent added, swirled to ensure complete coverage of the surfaces, the excess removed and then allowed to air dry. The glassware then needs rinsing a couple of times with deionized water and once auto-claved is ready for use.
Q: Is it possible to buy the culture flask's magnetic stirrer separately?
A: The magnetic stirrers can be purchased separately. The part codes for each vessel size are shown in the table below.
| Vessel Size | Part Code (w/rods) | Part Code (w/o rods) |
| 125ml | 6027988 | 6027987 |
| 250ml | 6027689 | 6027690 |
| 500ml | 6027607 | 6027609 |
| 1 liter | 6027608 | 6027610 |
| 3 liter | 6027613 | 6027615 |
| 5 liter | 6027883 | 6027884 |
Q: Will the stirrers generate heat and increase the temperature in the incubator?
A: Negligible heat is generated by the stirring action due to the non-slip magnetic drive between the rotating magnets in the base and the embedded magnets in each stirring rod. The continuous running of the motor produces no measurable increase in temperature which could affect the cells/media.
Q: Can the culture vessels in the MCS system be auto-claved?
A: The glass flasks and stirring rods for the MCS biological stirrers can be auto-claved at 121°C at 15psi for 30 minutes.
