These application types are the least common and require highly specialized equipment designs.Īlthough there is not a standard viscosity value that determines an application to be “high viscosity,” for practical purposes we will consider it to be relatively so when achieving continual flow throughout a mixing vessel requires significant assistance to remain in motion. Extreme viscosities for products such as asphalt that almost completely resist flow can exceed 250,000 cps and we have even seen examples of some printing ink formulations that exceeded 1,000,000 cps. Centipoise (cps) is one common unit of measure with 1 centipoise being the viscosity of water. Viscosity values can be provided by liquid ingredient producers on their product data sheets or they can be determined using multiple types of test equipment with results provided in various units of measure. The degree to which a fluid resists continual movement when subjected to shear force such as from a mixing impeller is primarily determined by its viscosity. Understanding the unique needs of high-viscosity mixing is critical for businesses to ensure they have the right equipment for their needs. There is much more flexibility in designing mixing equipment for low-viscosity applications, while high-viscosity applications present more challenges. In practice, most industrial mixing processes feature low-viscosity fluids - i.e., those that move easily when agitated and continue to flow after agitation is removed, as opposed to high-viscosity fluids which do not flow easily, if at all, unless directly driven by mechanical means. Liquid mixing processes are used in a wide range of industries to produce an even wider range of products.
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