Editing Viscometer (section)

==Miscellaneous viscometer types==
Other viscometer types use balls or other objects. Viscometers that can characterize [[non-Newtonian fluid]]s are usually called ''[[rheometer]]s'' or ''[[plastometer]]s''. Some instruments like capillary or VROC® viscometers can measure both Newtonian and non-Newtonian fluids.<ref>{{cite journal |last1=Shin |first1=Sehyun |last2=Keum |first2=Do-Young |title=Viscosity measurement of non-Newtonian fluid foods with a mass-detecting capillary viscometer |journal=Journal of Food Engineering |date=June 2003 |volume=58 |issue=1 |pages=5–10 |doi=10.1016/S0260-8774(02)00327-8 }}</ref><ref>{{cite web | url=https://dhanbadinstruments.com/measuring-instruments/viscometer-viscosity-meter | title=Viscometer/Viscosity Meter }}</ref>

In the I.C.I "Oscar" viscometer, a sealed can of fluid was oscillated torsionally, and by clever measurement techniques it was possible to measure both viscosity and elasticity in the sample.

The [[Marsh funnel]] viscometer measures viscosity from the time (''efflux time'') it takes a known volume of liquid to flow from the base of a cone through a short tube. This is similar in principle to the [[flow cups]] (efflux cups) like the [[Ford viscosity cup|Ford]], [[Zahn cup|Zahn]] and [[Shell viscosity cup|Shell]] cups which use different shapes to the cone and various nozzle sizes. The measurements can be done according to [[International Organization for Standardization|ISO]] 2431, [[ASTM]] D1200 - 10 or [[DIN]] 53411. <ref>{{Cite web|url=https://kb.oges.info/library/25113/marsh-funnel-drilling-fluid-viscosity-equation-for-field-use|title=The Marsh Funnel and Drilling Fluid Viscosity: A New Equation for Field Use|website=kb.oges.info}}</ref>

The [https://patents.google.com/patent/WO2013001538A1/en flexible-blade rheometer] improves the accuracy of measurements for the lower-viscosity liquids utilizing the subtle changes in the flow field due to the flexibility of the moving or stationary blade (sometimes called wing or single-side-clamped cantilever).

A [[rotating disk viscometer]] is the standard viscometer for measuring material viscosity and scorch time for rubber before vulcanization.