Dynamic viscosity is commonly measured in Poise (P). The higher the poise value – the thicker the fluid is, and so the more resistant to flowing. The lower the poise value – the thinner the fluid is, and the less resistant to flowing.

Poise is the CGS (centimetre-gram-second) unit of viscosity, equivalent to dyne-second per square centimetre.

There are other values that viscometers use to measure dynamic viscosity, such centipoise (Cp) which is 0.01 poise, and Pascal-second (Pa.s) which is equivalent to 0.1 poise and sometimes referred to as Poiseuille (PI).

Pascal-second is the SI unit of viscosity, equivalent to newton-second per square meter.

When testing for viscosity, you set the RPM or desired shear rate of the viscometer, and then the machine gives you the reading in poise / centipoise / pascal-second etc.

Different temperatures and different speeds can result in different viscosity readings, so it is important that your viscometers are set to the correct values to obtain / analyse the viscosity reading you are hoping to achieve.

Why are the NuLine viscometers the best?

Our NuLine viscometers can set temperatures to 0.1°C, variable RPM of between 5 – 900 RPM and offer a range of cones that covers 0 – 13,500 poise.

We also include software that can measure viscosity across a range of speed, time and temperature, creating a useful viscosity graph.

Our viscometers are accurate, high precision, durable and very easy-to-use.