3B Scientific UHH-VISKOS Falling Sphere Viscometer, 0.5 to 70,000 Millipascal Seconds Viscosity Measurement Range

The 3B Scientific UHH-VISKOS Hoppler-type falling sphere viscometer has a 0.5 to 70,000 millipascal seconds (mPa s) measuring range and is suitable for measurement of dynamic viscosity of transparent Newtonian fluids. It includes six spheres of size #1 and #2 borosilicate glass, size #3 and #4 nickel-iron, and size #5 and #6 steel for testing a variety of fluids. The 40mL viscometer tube is housed in a water bath for temperature-controlled viscosity testing.

The viscometer includes a test certificate with data values for sphere constant K and density ⍴ for converting the sphere fall duration to viscosity. This falling sphere viscometer is suitable for testing a variety of fluids, such as oils, gases, polymers, cosmetics, detergents, and foods for use in a variety of industries.

H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.

A viscometer, also called a viscosimeter, is an instrument used to measure the friction caused by the relative motion of a Newtonian fluid and a known surface, and is usually expressed in units of poise (P), centipoise (cP), pascal seconds (Pa s), and millipascal seconds (mPa s). Viscometers have several forms, including but not limited to falling ball, rotational, vibrating, capillary, funnel, and bubble. A falling ball viscometer measures the time it takes for a ball of known diameter and density to fall through fluid in a cylinder of known diameter. A rotational viscometer measures the force required to stir a fluid. A vibrating viscometer measures the power input necessary to keep the oscillator vibrating at constant amplitude while immersed in a fluid. A capillary viscometer has a narrow-bore vertical section with two printed marks that measure time required for a known volume of fluid to fall a known distance. A funnel viscometer, such as a Ford, Zahn, or Shell cup, measures the time it takes a known volume of fluid to flow from the base of a cone through a short tube. A bubble viscometer measures the time required for an air bubble to rise through a fluid. Viscosity measurements are used in laboratories, research and development, process control, and plant quality control applications. Some viscometers are manufactured to meet industry or governmental standards, including Ingress Protection (IP), National Institute of Standards and Technology (NIST), International Standards Organization (ISO), and ASTM International (formerly American Society for Testing and Materials)

3B Scientific manufactures anatomical models, simulators, charts, and other training materials for use in scientific, medical, and patient education. The company, founded in 1948 and headquartered in Hamburg, Germany, meets International Organization of Standardization (ISO) standard 9001: 2008.

What's in the Box?

• Falling sphere viscometer
• (6) Spheres
• Ball gauge
• Thermometer
• Cleaning set
• Test certificate