Falling Sphere Viscometer Identification

A falling sphere viscometer measures the viscosity of a fluid by determining the time it takes for a sphere to fall under gravity through the fluid. This method relies on Stokes' Law.

Alternative Viscometer Nomenclature

The falling sphere viscometer is commonly referred to by other names depending on its specific design and manufacturer. One well-known designation for this type of instrument is the:

• Hoeppler viscometer

Distinguishing Viscometer Types

It is important to differentiate the falling sphere viscometer from other common types:

• Cup and bob viscometers are a type of rotational viscometer where viscosity is measured based on the torque required to rotate a bob within a cup containing the fluid.
• Brookfield viscometers are also rotational viscometers, measuring the resistance to rotation of a spindle submerged in the fluid.
• Anton Paar viscometers encompass a range of instruments, often rotational or based on oscillating bodies, used for precise rheological measurements, but not typically classified as simple falling sphere types.

Therefore, the Hoeppler viscometer is an alternative name for the falling sphere viscometer.