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.
Cannon™ Fenske Opaque Viscometer
CFO Calibrated Series that determines viscosities using ASTM testing methods.
Cannon™ Fenske Calibrated CFOC Series Opaque Viscometers
Measures kinematic viscosity of transparent and opaque Newtonian liquids according to ASTM D445, ISO 3104 and ASTM D2170.
Cannon™ Zeitfuchs Cross-Arm Viscometer
Use to determine kinematic viscosities of transparent and opaque Newtonian liquids according to ASTM D 445 and ISO 3104.
IKA™ ROTAVISC SBS me-vi HELI Complete Viscometer
IKA ROTAVISC SBS Complete Viscometers are characterized by their high robustness. Predestined for applications with very high sample throughput, frequent spindle changes, operation in harsher environments, or even frequently changing device locations.
IKA™ Rotavisc me-vi Complete Viscometer Package
Rotational Viscometer Packages
IKA™ Rotavisc hi-vi II Complete Viscometer Package
Rotation Viscosimeter Packages
IKA™ ROTAVISC hi-vi II HELI Complete Viscometer Package
The ROTAVISC hi-vi II HELI Complete Viscometer Package determines the viscosity of extremely viscous liquids in all areas of application ranging from the laboratory to quality control.
IKA™ Rotavisc hi-vi I Complete Viscometer Package
Rotation Viscosimeter Packages
IKA™ HELISTAND Set
The motorized IKA HELISTAND allows you to measure the viscosity of highly viscous samples with a high level of reliability. It moves the mounted viscometer and its rotating body slowly and uniformly up and down in the sample.
Cannon™ Manning Calibrated CMSMC Semi-Micro Viscometers
For measurement of kinematic viscosity of small samples of transparent Newtonian liquids, including petroleum products or lubricants, according to ASTM D 445 and ISO 3104.
Brookfield Engineer Labs LVDV2T VISCOMETER
• 5-inch full colour, touch screen display supports multiple languages • Displayed info includes: viscosity (cP/mP·s), temperature (°C/°F), shear rate/stress, % torque, spindle/speed, step program status • Enhanced Security with customizable user access, date/time stamp file, password access, portable log-in settings • Built-In options include timed tests, data averaging, programmable QC limits/alarms, customizable speed/spindle lists, on screen data comparison • Auto range shows maximum viscosity measured with any spindle/speed combination • USB PC interface provides optional computer control and automatic data gathering capability • Download custom test programs with included PG Flash software • Front-facing bubble level for convenient viewing • Built-in temperature probe • Accuracy of ±1.0% of range with displayed test data • Repeatability of ±0.2% • NIST traceable viscosity standards available
Brookfield Engineer Labs DV2T Viscometer - RV Torque Range
Brookfield DV2T Viscometers are built with a 5-inch color display to guide you through test creation and data gathering for fast and easy laboratory viscosity measurements. You can record test data directly on a local printer or send to a PC. Optional RheocalcT Software enables additional automated control and data collection.
Koehler™ Instrument Round Holder for Viscometers
For use with Ubbelohde glass capillary viscometers.
Anton Paar ViscoQC 300 – L a multi-point low viscosity rotational viscometer
ViscoQC 300 is a digital rotational viscometer that determines the dynamic viscosity as multiple points for analyzing the flow behavior. Unique benefits include automatic spindle detection by Toolmaster™, automatic guard detection by TruGuard™, unique TruMode™, magnetic coupling for easy one-hand exchange of spindles and digital leveling to ensure the proper alignment of the instrument. It features a data memory and a 7” color glass touchscreen. The instrument is upgradeable with compliance (21 CFR Part 11) and/or additional analysis software.Speed range: 0.01 to 250 rpm (freely selectable)Accuracy: ±1.0 % full scale rangeRepeatability: ±0.2 %L model is perfectly suited for low-viscosity samples such as oils, solvents and juices. It can measure the thinnest samples. Viscosity range: 1* to 6M mPa·s (*with optional double-gap system DG26, with L1 spindle 15 mPa·s).
