CENTRIFUGE BRAKING SPEED
CENTRIFUGE BRAKING SPEED LEVEL 5
The slower breaking feature prevents platelets from being released or agitation which can occur at the quicker settings, such as 30 seconds.
When you stop this quick you can have some of the samples resuspend or mix, so most PRP users use the lower brake speeds.
Level 5 is fairly common, or 6, which is almost an air brake with a bit of assistance to prevent it from going on forever.
If you having issues with a purity would suggest trying level 6.