# Intrinsic Viscosity

I'm presently undergoing an Experiment for the determination of the viscosity of Ficoll-70 using Ostwald viscometer to calculate the time and a digital weighing balance to determine the weight of a specified volume of the solution at different concentration. I have reached a result but unable to correlate with any data provided by the journals or thesis on this area. It's because they all have given the value of 'Intrinsic Viscosity'. How different is the Dynamic viscosity from the Intrinsic one? Can I calculate the dynamic viscosity of a solution if I know its Intrinsic viscosity ?

$$\eta = ([\eta]\phi + 1)\eta_0$$
where $[\eta]$ is the intrinsic viscosity, $\eta_0$ is the viscosity of the solvent (presumably water in this case) and $\phi$ is the concentration of the Ficoll-70. You'll probably find $[\eta]$ is given in units of ml/g, so you need to give $\phi$ in g/ml. You could try calculating the viscosity using this formula, but I'd be suprised if it worked for the sort of concentrations Ficoll-70 is normally used at i.e. a few percent by weight.