The signal can be detected using different optical methods, as shown here using fluorescence and transmitted light. The measurement principle involves the detection of viscosity-dependent angular positions in a rotating liquid relative to the direction of centrifugal acceleration in an orbitally shaken vessel.
Here we present a simple, precise and robust contact-free method to determine viscosity, using a single drive motor, inexpensive components and disposable sample vessels. Current methods to measure viscosity involve direct contact with the liquid sample, which is often undesirable. Viscosity is an inherent characteristic of fluids and is therefore an important parameter in many different processes.
