Accurate Viscosity Measurement using Disk-Type Electromagnetically Spinning System

We introduce an accurate viscosity measurement method that is especially effective for low-viscosity (<10 mPa·s) samples. The combination of an electromagnetically spinning system and a disk-type rotor remarkably reduces mechanical friction, thus making possible rapid, noncontact viscosity measurements with accuracy better than 1%. The influence of a large Reynolds number on viscosity measurement is also examined.