EV Centrifugation Model

Based on Livshts et al., Sci. Rep. 5, 17319 (2015)

1 Select Your Rotor

mm
mm
List of Standard Rotors
Type Rotor Rmin (mm) Rmax (mm) Rav (mm) Angle (°) Tube ⌀ (mm) Lsed (mm)

2 Properties of the Centrifugation Medium

g/cm³
g/cm³
cP

3 Calculations

Fix two of the three parameters (RCF/RPM, centrifugation time, “cut-off size” of completely sedimented vesicles). The third will be calculated. The proportion of pelleted vesicles in the specified population is calculated automatically.

Centrifugation Protocol

Centrifugation Time

min

Vesicle Sedimentation Profile

nm

Pelleting Results

Vesicle diameter 50 nm 70 nm 100 nm 120 nm 150 nm
Portion pelleted

4 Sedimentation Profile Plot

5 K-Factor (Clearing Factor) Calculator

The K-factor quantifies rotor pelleting efficiency. Lower K = faster sedimentation. Use it to convert run times between rotors at the same RCF: tnew = told × Knew / Kold

Select a rotor and set rotation speed to see K-factor.

Compare All Rotors

Generate a comparison table showing K-factors and equivalent run times for all preset rotors at the current RCF. Times are scaled relative to the currently selected rotor.

Run Time Conversion

Convert a run time from one rotor to another at the current RCF.

min

6 Multi-Step Protocol Designer

Design a complete differential centrifugation protocol with multiple steps. Add steps and see cumulative effects on different vesicle populations.

Step 1: