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.
Anton Paar ViscoQC 300 - H a multi-point high 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 softwareSpeed range: 0.01 to 250 rpm (freely selectable)Accuracy: ±1.0 % full scale rangeRepeatability: ±0.2 %H model is perfectly suited for high-viscosity samples such as pastes, ointments, gels. Viscosity range: 60* to 320M mPa·s (*with optional double-gap system DG26, with RH1 spindle 800 mPa·s).Includes: Fully assembled instrument, 6 spindles equipped with Toolmaster™, Magnetic coupling, SOP, V-Collect
Canon Instrument Co Ubbelohde Viscometer, Size 0, Calibrated
The Ubbelohde Viscometer measures kinematic viscosity of transparent Newtonian liquids according to ASTM D445 and ISO 3104. Minimum sample volume is 11 mL. Minimum bath depth is 241 mm (9.5 in). Unity factor series has a constant within +/- 0.2% of the values listed. Approximate Constant (mm²/s²): 0.001. Viscosity Range (mm²/s): 0.3-1.0
Bellco Glass, Inc. The OxyProbe 12mm dissolved oxygen sensors offer the most rugged and versatile design for bench-top vessels the compact profile saves space and will fit directly into any port with standard compression fittings or pg 135 threads the small diameter facilit
The OxyProbe 12mm dissolved oxygen sensors offer the most rugged and versatile design for bench-top vessels the compact profile saves space and will fit directly into any port with standard compression fittings or pg 135 threads the small diameter facilit
Bellco Glass, Inc. Pre-mounted stainless steel clamps for Bellco Erlenmeyer flask. Flask Tray fits on top of the standard tray platform. Includes clamps. Flask positions: 49 Dimensions: 51x51cm Size: 50ml
Pre-mounted stainless steel clamps for Bellco Erlenmeyer flask. Flask Tray fits on top of the standard tray platform. Includes clamps. Flask positions: 49 Dimensions: 51x51cm Size: 50ml
DC Scientific Glass Inc CROSS ARM VISCOMETER - SIZE 5
CROSS ARM VISCOMETER, SIZE 5, PROVIDED WITH ISO/IEC 17025:2017 CALIBRATION CERTIFICATE
Enterprise Technology Solutions Optional Loop Arm Kit for Mesh
Optional Loop Arm Kit for Mesh Extended Height Chairs for Safco Vue Mesh Extended-Height Chairs Black 2/Set
Bellco Glass, Inc. Sst constructionDimensions 12 x 12 x 16"Digital tach input0-36 vdc; power @ 15a6' cable interface to CellTrol ii
Sst constructionDimensions 12 x 12 x 16"Digital tach input0-36 vdc; power @ 15a6' cable interface to CellTrol ii
Sigma Aldrich Fine Chemicals Biosciences HiTrapR CaptoTM S Cytiva 1
HiTrap(R) Capto(TM) S is a strong cation exchanger prepacked with BioProcess Capto(TM) media for screening and small-scale protein purifications using ion exchange chromatography (IEX).
Sigma Aldrich Fine Chemicals Biosciences MolymodR molecular model s
Top quality Molymod molecular model sets are for use by students teachers and researchers. May be upgraded or customized with additional model parts for more info go to sigma-aldrich.com and enter Molymod in our search engine. Scale is 2.8 cm 100 pm (open style) and 1.45 cm 100 pm (compact semi-space-filling). Sets include standard color-coded plastic atom centers (with bond holes set at the appropriate angles) bonding links and a plastic storage box.Set pictured is representative of the Student set.See our Selection Guide for detailed descriptions of set contents.