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.
PCE AMERICAS INC Viscometer with a resolution 0.01 cP and repeatability ±0.5 %
Viscometer with LC display / Mains operation / Sample quantity 250 ... 400 ml /Measuring range 15 ... 100,000 cP / Adjustable speed of rotation /Simple operation / Spindle set L1 ... L4 included in delivery.The viscometer has a measuring range of 15 ... 100,000 cP. With an accuracy of <±2% of the range, the viscometer is a precise measuring device to determine the viscosity of a sample liquid. The viscosity is determined by the viscometer on the basis of an applied mechanical resistance that acts in the opposite direction to the rotational movement of a spindle. The viscometer can be operated with an adjustable speed in the range between 6… 60 RPM.
Enterprise Technology Solutions Hi-Start Hand Tacker
Hi-Start Hand Tacker T50 Style Staples (0 25 to 0 56) and 18-gauge Brads (0 5 to 0 63)
Anton Paar ViscoQC 300 – R a multi-point medium 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 %R model is perfectly suited for medium-viscosity samples such as creams, food and paints. Viscosity range: 10* to 40M mPa·s (*with optional double-gap system DG26, with RH1 spindle 100 mPa·s).Includes: Fully assembled instrument, 6 spindles equipped with Toolmaster™, Magnetic coupling, SOP, V-Collect
Ace Glass, Inc. Cannon-Fenske viscometer, calibrated, size 450, 500-2500centistokes
Cannon-Fenske viscometer, calibrated, size 450, 500-2500centistokes
Cole-Parmer Cannon 9721-R62 Viscometer, Size 1C; 6 to 30 Centistokes
Ubbelohde Viscometers. Use to determine kinematic viscosities of transparent Newtonian liquids. Require an 11-mL sample volume. Precision is ±0.2%.
Ace Glass, Inc. Cannon-Fenske viscometer, calibrated, size 650, 9000-45000centistokes
Cannon-Fenske viscometer, calibrated, size 650, 9000-45000centistokes
Ace Glass, Inc. Cannon-Fenske viscometer, uncalibrated, size 700, 20000-100000 centistokes
Cannon-Fenske viscometer, uncalibrated, size 700, 20000-100000 centistokes
Hach Company SC4500 Ctrl Claros 5x mA Out 1
SC4500 Controller-Claros-enabled-5x mA Output-1 digital Sensor-100-240 VAC-without power cordIncludes SC4500 Controller-Claros-enabled-with EU plug includes mounting hardware
Sigma Aldrich Fine Chemicals Biosciences Cannon-fenske viscometer t1EA
Obtain kinematic viscosities using tubes designed for ASTM Method D445 and D2515. Viscosities can be measured with a precision of /-0.2% quickly and easily.Requires approximately 7 mL of sample. Certificate of Calibration supplied.
YSI 3P LifeScience OSTWALD CAPLLRY VISCOMTR 51623
Type No. 516 23, Capillary No. IIc, Constant K = 0.3, calibrated for manual measurements