Perform the following with each microcentrifuge tube containing sample and acid:
- Vortex at maximum speed vigorously for 50 seconds.
- Wait 10 minutes.
- Vortex vigorously for 30 seconds.
Note: Vortexing the tubes individually reduces the chance of liquid splashing on the underside of the cap. Tubes may be vortexed in the MPC®-S without the magnet strip; however, if the MPC®-S is used, the sample may need to be shaken down to ensure the liquid is at the bottom of the tube prior to separation.
Narration:
Vortex vigorously for 50 seconds, wait 10 minutes and vortex vigorously for another 30 seconds. Be sure all the liquid is at the bottom of the tube after each vortex.