Viscometers
Viscometers
Instruments used to measure the viscosity of a fluid; available in a variety of configurations.
Viscometers or viscosimeters are important to many industries, including the adhesive, biotech, chemical, food, paint, petroleum, and pharmaceutical industries.
What Is a Viscometer?
Viscometers are instruments used to measure viscosity, the internal friction of the layers of a liquid in motion. An example is the slower flow of syrup from a container — syrup is more viscous than water.
How Is Viscosity Measured?
In general, viscometers move an object through a stationary fluid or move the fluid past a stationary object to measure the friction between the fluid and the object or surface. Viscometers measure using a single flow condition.
What Are the Different Types of Viscometers?
- Glass capillary viscometers or Ostwald or Ubbelohde viscometers consist of a U-shaped glass tube held vertically in a controlled temperature bath. Liquid is drawn by suction into the upper bulb and allowed to flow down into the lower bulb. You calculate viscosity by measuring the amount of time it takes for the liquid to move between two marks.
- Falling ball viscometers measure the time it takes for a sphere of a known size and density to descend through a stationary liquid. This can be done electronically for opaque fluids.
- Rotational viscometers use the concept of torque to measure the effort required to turn a disk or bob in a fluid. Rotating bobs are more common, rotating cups reduce the likelihood of vortex formation, and "cone and plate" viscometers create a constant shear rate at any speed.
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Filtered Search Results
Fisherbrand™ Glass Kinematic Viscometer Tubes
Cannon™-Fenske type viscometer tubes for measuring kinematic viscosity of petroleum products by ASTM™ D 445.
Fisherbrand™ Glass Ubbelohde Calibrated Viscometer Tubes
For measurement of kinematic viscosities of petroleum products according to ASTM™ D 445 and D 446.
Includes | Instruction sheet, calibration certificate |
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Accuracy | ASTM D445, ASTM D446 |
Depth (Metric) Bath | 24.1 cm |
Precision | ±0.2% |
Product Type | Ubbelohde Viscometer |
Volume (Metric) | 11 mL |
Depth (English) Bath | 9.5 in. |
Material | Borosilicate Glass |
Certifications/Compliance | ASTM D445, ASTM D446, ISO 3104, ISO 3105, calibration certificate |
For Use With (Application) | For measurement of kinematic viscosity of transparent Newtonian liquids |
Calibrated | Yes |
Fisherbrand™ Glass Opaque Calibrated Viscometer Tubes
Cannon™-Fenske opaque type viscometer tubes for measuring viscosity of dark liquids and lubricating oils by ASTM™ D 445.
Includes | Instruction sheet, calibration certificate |
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Accuracy | ASTM D445, ASTM D446 |
Depth (Metric) Bath | 22.9 cm |
Precision | ±0.3% |
Product Type | Cannon-Fenske Opaque Viscometer |
Volume (Metric) | 12 mL |
Depth (English) Bath | 9 in. |
Material | Borosilicate Glass |
Certifications/Compliance | ASTM D445, ASTM D446, ISO 3104, ISO 3105, calibration certificate |
For Use With (Application) | For measurement of kinematic viscosity of dark Newtonian liquids, measure kinematic viscosity of liquid to study lubricating oils at low temperatures |
Calibrated | Yes |
Thermo Scientific™ HAAKE™ Falling Ball Viscometer C
Measure viscosity precisely using only a stop watch and no power connection with the Thermo Scientific™ HAAKE™ Falling Ball Viscometer C.
Thermo Scientific™ HAAKE™ Viscotester™ iQ Rheometer Application Packages
Ready to use in seconds in any configuration you need
Cannon™ Fenske Calibrated CFOC Series Opaque Viscometers
Supplier Diversity Partner
Small and/or diverse supplier based on Federal laws and SBA requirements.
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Small and/or diverse supplier based on Federal laws and SBA requirements.
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Measures kinematic viscosity of transparent and opaque Newtonian liquids according to ASTM D445, ISO 3104 and ASTM D2170.
Cannon™ Ubbelohde Calibrated UBC Series Viscometers
Supplier Diversity Partner
Small and/or diverse supplier based on Federal laws and SBA requirements.
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Small and/or diverse supplier based on Federal laws and SBA requirements.
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Suspended level instrument for measurement of kinematic viscosity.
Includes | Instruction sheet, calibration certificate |
---|---|
Depth (Metric) Bath | 24.1 cm |
Precision | ±0.2% |
Product Type | Ubbelohde Viscometer |
Volume (Metric) | 11 mL |
Depth (English) Bath | 9.5 in. |
Material | Borosilicate Glass |
Certifications/Compliance | ASTM D445, ASTM D446, ISO 3104, ISO 3105, calibration certificate |
For Use With (Application) | For measurement of kinematic viscosity of transparent Newtonian liquids by suspended level principle |
Calibrated | Yes |
Cannon™ Fenske Opaque Viscometer
Supplier Diversity Partner
Small and/or diverse supplier based on Federal laws and SBA requirements.
Learn More
Small and/or diverse supplier based on Federal laws and SBA requirements.
Learn More
CFO Calibrated Series that determines viscosities using ASTM testing methods.
Includes | Instruction sheet, calibration certificate |
---|---|
Depth (Metric) Bath | 22.9 cm |
Precision | ±0.3% |
Product Type | Cannon-Fenske Opaque Viscometer |
Volume (Metric) | 12 mL |
Depth (English) Bath | 9 in. |
Material | Borosilicate Glass |
Certifications/Compliance | ASTM D445, ASTM D446, ISO 3104, ISO 3105, calibration certificate |
For Use With (Application) | For measurement of kinematic viscosity of dark Newtonian liquids, measure kinematic viscosity of liquid and to study lubricating oils, upper bulb may be used for determining the degree of non-Newtonian behavior of the sample |
Calibrated | Yes |
Fisherbrand™ Glass Vacuum Viscometer Tubes
Cannon™-Manning type viscometer tubes for measuring viscosities of highly viscous materials such as asphalt cement at 60°C (140°F) according to ASTM™ D 2171.
Includes | Instruction sheet, calibration certificate |
---|---|
Accuracy | ASTM D2171 |
Depth (Metric) Bath | 5.1 cm |
Precision | ±0.5% |
Product Type | Cannon Manning Vacuum Viscometer |
Volume (Metric) | 6 mL |
Depth (English) Bath | 2 in. |
Material | Borosilicate Glass |
Certifications/Compliance | ASTM D2171, calibration certificate |
For Use With (Application) | For measurement of viscosity of highly viscous materials |
Calibrated |