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
SI Analytics™ Cannon-Fenske Routine Viscometer
Determine absolute and relative kinematic viscosity of liquids with Newtonian flow behavior. SI Analytics™ Cannon-Fenske Routine Viscometer includes three ring marks since they can only be checked by means of manual measurements.
SI Analytics™ Manual Ubbelohde Viscometer
Determine absolute and relative kinematic viscosity of liquids with Newtonian flow behavior. SI Analytics™ Manual Ubbelohde Viscometer includes ring marks to ensure that they can be checked by means of manual measurements.
Includes | Ring Marks |
---|---|
Description | 290mm Long |
Product Type | Viscometer |
Volume (Metric) | 15 to 25 mL |
Certifications/Compliance | DIN 51 562 Part 1, ISO/DIS 3105 (BS-IP-SL) |
For Use With (Application) | For Determination of Absolute and Relative Kinematic Viscosity of Liquids With Newtonian Flow Behavior |
Calibrated | Yes |
SI Analytics™ Ubbelohde Viscometer
Determine absolute and relative kinematic viscosity of liquids with Newtonian flow behavior. SI Analytics™ Ubbelohde Viscometer includes ring marks to ensure that they can be checked by means of manual measurements.
Includes | Ring Marks |
---|---|
Product Type | Viscometer |
Volume (Metric) | 15 to 20 mL |
Certifications/Compliance | DIN 51 562 Part 1, ISO/DIS 3105 (BS-IP-SL) |
For Use With (Application) | For Determination of Absolute and Relative Kinematic Viscosity of Liquids With Newtonian Flow Behavior |
Calibrated | Yes |
SI Analytics™ Ubbelohde Viscometer (DIN)
Ubbelohde viscometers are calibrated for manual measurements
SI Analytics™ Micro-Ubbelohde Viscometers (DIN)
Micro-Ubbelohde viscometers are calibrated for manual measurements
SI Analytics™ Ostwald Viscometer
SI Analytics™ Ostwald Viscometer for determination of absolute and relative kinematic viscosity of liquids with Newtonian flow behavior.
SI Analytics™ ViscoSystem™ AVS 470 Viscometer
Modular viscometry system ideal for simple and complex systems from Schott
SI Analytics™ Ostwald Viscometer
Determine absolute and relative kinematic viscosity of liquids with Newtonian flow behavior. SI Analytics™ Ostwald Viscometer includes ring marks to ensure that they can be checked by means of manual measurements.
Includes | Ring Mark |
---|---|
Product Type | Viscometer |
Volume (Metric) | 3 mL |
For Use With (Application) | For Manual Measurements |
SI Analytics™ Cannon-Fenske Reverse Flow Viscometer
Determine absolute and relative kinematic viscosity of liquids with Newtonian flow behavior. SI Analytics™ Cannon-Fenske Reverse Flow Viscometer includes three ring marks since they can only be checked by means of manual measurements.
Includes | Ring Marks and 2 Constants |
---|---|
ASTM Numbers | D 446 |
Product Type | Viscometer |
Volume (Metric) | 12 mL |
Certifications/Compliance | ISO/DIS 3105, ASTMD 2515, ASTM D 446, NF T 60 - 100 |
For Use With (Application) | Only for manual measurement |
Calibrated | Yes |
SI Analytics™ Ubbelohde Viscometers (ASTM)
SI Analytics™ Ubbelohde Viscometers (ASTM) feature a suspended ball level for determination of absolute and relative kinematic viscosity of liquids with Newtonian flow behavior.
SI Analytics™ Ubbelohde Viscometer (ASTM)
Ubbelohde viscometers are calibrated for automatic measurements
SI Analytics™ Ubbelohde ASTM Viscometer
Determine absolute and relative kinematic viscosity of liquids with Newtonian flow behavior. SI Analytics™ Ubbelohde ASTM Viscometer includes ring marks to ensure that they can be checked by means of manual measurements.
ASTM Numbers | D 446 |
---|---|
Product Type | Viscometer |
Certifications/Compliance | ISO/DIS 3105, ASTM D 2515, ASTM D 446 |
For Use With (Application) | Manual Measurements and Automatic Measurements |
Calibrated | Yes |
SI Analytics™ Micro Ubbelohde Viscometer for Dilution Viscometry
Determine the limit viscosity number of polymers. SI Analytics™ Micro Ubbelohde Viscometer for Dilution Viscometry includes ring marks to ensure that they can be checked by means of manual measurements.
SI Analytics™ Ubbelohde Viscometer for Dilution Viscometry
Determine the limit viscosity number of polymers. SI Analytics™ Ubbelohde Viscometer for Dilution Viscometry includes ring marks to ensure that they can be checked by means of manual measurements.
SI Analytics™ Cannon-Fenske Routine Viscometer
SI Analytics™ Cannon-Fenske Routine Viscometer is calibrated, with a ring mark and constant, for automatic measurements.