sedimentation velocity, v B

Velocity of a component in a fluid relative to the fluid in the direction of gravitational or centrifugal acceleration. Also called sedimentation rate.
Source:
PAC, 1996, 68, 957 (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 992
PAC, 1994, 66, 897 (Quantities and units for centrifugation in the clinical laboratory (IUPAC Recommendations 1994)) on page 904