In a recent post, we discussed how some liquids containing bacteria swimmers can display negative viscosity. This can be a misleading since the apparent negative viscosity occurs due to swimmers pushing the surrounding fluid so that the overall system shows negative resistance to flow (i.e. it flows by itself!). One of the best examples of super fluidity is super cooled helium.
Intrinsic viscosity is an important tool in the fields of polymer and protein research. Intrinsic viscosity allows for determination of molecular weight and size more reliably than dynamic light scattering. Small sample m-VROC™ viscometer is an ideal tool to measure intrinsic viscosity of samples. The high accuracy, low sample volume requirements, and high speed of measurement ensure that data collection is fast, simple, and accurate.
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