Capillary Viscometers
Calibrated with clear markings, the capillary viscometers support visual viscosity measurements of liquids. The direct or reverse flow styles have respectively positioned reservoirs to calculate the time it takes a specific fluid quantity to flow through the capillary. Since the driving force is gravity and cannot be varied, the standardized glass tubes produce more reliable results. Common Ostwald and Ubbelohde capillary viscometers are inexpensive alternatives to digital versions when determining material properties.
Ubbelohde viscometers, DIN
Supplier: SI Analytics
Ubbelohde viscometers with suspended ball level for determination of relative or absolute kinematic viscosity.
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Cannon-Fenske viscometers, KIMBLE®
Supplier: DWK Life Sciences
This viscometer requires calibration against a standard liquid of known viscosity or against a second viscometer with known constant.



