Page 16, hemodynamics, Dr. D. Penney


Viscosity:

Viscosity can be determined readily using a device called an Ostwald viscometer, a piece of fancy glassware. It has a reservoir on one side and a fine capillary tube on the other. A small volume of fluid is placed into the reservoir, it is drawn up into the tube, and then allowed to flow through it. The flow time past fixed points on the glass is recorded and compared to the flow time for pure water at the same temperature, etc. The normal relative viscosity of blood is approximately 3 (2.5-4.0).




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