The Acorn Area uses NMR to measure the surface area of a wide range of particles in suspensions, emulsions and colloids.
Liquid molecules in free solution have a different NMR relaxation time to those attached to the particle surface - the Area measure this difference and then calculates surface area.
The technique makes no assumption about particle size or shape and does not require lengthy sample preparation; it can also measure most samples without the need for dilution.
It can be used for measuring surface area in less than five minutes.
The Acorn Area is available from Meritics.