This company announces its Model LB-500 dynamic light-scattering particle-size analyzer. The unit has been developed for submicron particle-size measurement with a size range of 0.002 to 6 microns. The compact analyzer can measure samples over a range of concentrations, and most samples can be analyzed undiluted. The majority of samples can be analyzed within two minutes in convenient, replaceable sample cells. It is suitable for the majority of particle-size applications for both R&D and quality assurance.