# Lidstrom:Sorvall Centrifuge

(Difference between revisions)
 Revision as of 13:28, 24 October 2013 (view source) (→Centrifugation Math & Basics)← Previous diff Current revision (13:44, 24 October 2013) (view source) (→Rotors) (3 intermediate revisions not shown.) Line 9: Line 9: ** Rotors we have: ** Rotors we have: *** SS-34.  Holds 8*50 mL, spins at 20,000 RPM/36,900 RCF *** SS-34.  Holds 8*50 mL, spins at 20,000 RPM/36,900 RCF + ****Tubes: [[image:Lidstrom_SS-34 tubes.png|thumb|upright=0.3|center|SS-34 tubes]] Can't be autoclaved.  Can't write on body; can only write on cap.  Sandy says syickers don't stick. *** GS-3. *** GS-3. *** ____.  Holds eppendorf (1.5mL) tubes *** ____.  Holds eppendorf (1.5mL) tubes * For reference, the benchtop 50mL centrifuges (e.g. [https://static.thermoscientific.com/images/D21714~.pdf ST-15R] with a [https://extranet.fisher.co.uk/webfiles/fr/Pjointes/Documentation/SOR007_EN%20SORVALL%20ST16&ST40%20CENTRIFUGE.pdf TX-400] swinging bucket rotor) we have spin at 4696 RCF. * For reference, the benchtop 50mL centrifuges (e.g. [https://static.thermoscientific.com/images/D21714~.pdf ST-15R] with a [https://extranet.fisher.co.uk/webfiles/fr/Pjointes/Documentation/SOR007_EN%20SORVALL%20ST16&ST40%20CENTRIFUGE.pdf TX-400] swinging bucket rotor) we have spin at 4696 RCF. + There are stickers with maximum speeds.  These were set by Katya, circa 2011.  It is unknown what the motivation was for keeping the rotors below maximum speed. [[image:Lidstrom_sorvoll_speed_instructions.png|thumb|upright=2.0|center|Lidstrom sorvoll speed instructions]] [[image:Lidstrom_sorvoll_speed_instructions.png|thumb|upright=2.0|center|Lidstrom sorvoll speed instructions]]

## Current revision

Back to Protocols

## Picture

Lidstrom Sorvoll centrifuge

## Rotors

• Sorvall rotors
• Rotors we have:
• SS-34. Holds 8*50 mL, spins at 20,000 RPM/36,900 RCF
• Tubes:
SS-34 tubes
Can't be autoclaved. Can't write on body; can only write on cap. Sandy says syickers don't stick.
• GS-3.
• ____. Holds eppendorf (1.5mL) tubes
• For reference, the benchtop 50mL centrifuges (e.g. ST-15R with a TX-400 swinging bucket rotor) we have spin at 4696 RCF.

There are stickers with maximum speeds. These were set by Katya, circa 2011. It is unknown what the motivation was for keeping the rotors below maximum speed.

Lidstrom sorvoll speed instructions
SS-34 rotor speeds and k factors
GS-34 rotor speeds and k factors
RCF explanation

## Instructions

Example protocol for AM1:

Janet's SIP3-4 centrifugation:

• Chill to 4oC with SS-34 rotor inside
• Fill correct tubes
• Spin for ___ min at ___ RCF at ___oC

## Centrifugation Math & Basics

• Sigma summary:
• sedimentation rate is proportional to RFC, and proportional to the square of the particle diameter (cell diameter).
• Stoke's equation
• centrifugation speeds for applications