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VROC® it!

Application Note - Extensional Viscosity on VROC initium one plus

Extensional, or elongational, viscosity is defined as the resistance of a fluid to extensional flow, which is ideal for studying the complex properties of many fluids used in industrial applications and processes. 

The original VROC® design was based on a uniform channel geometry to create a steady shear deformation during flow. An extensional component can be added by introducing a hyperbolic contraction-expansion in the center of the flow channel along with programming different calculations into the software.

In this application note, the viscosity of guar gum in solution was measured as a function of shear rate with the VROC® initium to demonstrate the ability of the automated viscometer to consistently load and measure the highly shear thinning formulations common utilized in the food industry.

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initium extensional

 

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