Journal
LAB ON A CHIP
Volume 9, Issue 21, Pages 3151-3154Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b908683h
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Using short lengths of fused silica capillary tubing embedded in the disk, a system for valving and filtering samples on centrifugal microfluidic devices has been designed and implemented. Sedimentation of turbid samples and transfer of the clear supernatant was also accomplished. Also demonstrated is the transfer of the liquid through a second capillary valve to the final reservoir. By controlling rotational speed, sedimentation and multiple step valving operations are readily implemented and easily prototyped.
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