With nuclear magnetic resonance (NMR), the Acorn Drop can be used to measure emulsion or foam droplet size and distribution, entirely without dilution. Simply place 0.5 ml of sample in a 5mm tube, insert it into the Drop and press START. The results are available a few minutes later. In contrast, conventional particle sizing techniques such as laser diffraction require extensive dilution of the emulsion in order to measure droplet size.
The measuring range of the Acorn Drop goes from 10nm to 100 microns. High concentration, highly viscous, opaque and light-sensitive emulsions can be measured directly as well as nano or or micro emulsions (that cannot be diluted due to their composition dependence). The method is nondestructive - therefore the same sample emulsion can be studied minutes, days or weeks later, which enables the user to analyze the stability of emulsion of a given period of time.