A new capillary viscometer for whole blood viscosimetry.
A new capillary system was developed, incorporating infrared sensors, which allowed the determination of whole blood viscosity over a wide range of shear stresses. Flow conditions were defined by the geometry of the capillary and the sample pressure head. Whole blood was considered to be a power law fluid and a modified Mooney's formula was used for the calculation of the related invariants. The new viscometer proved to be very simple in use, requiring one run, had a short measuring time and utilised a small test sample volume. However it can be used for whole blood viscosity measurements only at medium and high shear stresses.
Marinakis
G N
GN
Department of Mechanical Engineering, National Technical University of Athens, Greece. eiaa@otenet.gr
Barbenel
J C
JC
Fisher
A C
AC
Tsangaris
S G
SG
D001809:Blood Viscosity; D005069:Evaluation Studies as Topic; D006403:Hematologic Tests / Q000295:instrumentation*; D006801:Humans; D013314:Stress, Mechanical; D013997:Time Factors