Idexx Laboratories, Inc.

Aravind Reghu

Jeremy Hammond

James Russell

Jui Ming Lin

A method for determining the density of particles includes passing a carrier fluid and particles through a fractionation cell at a predetermined rate, where the carrier fluid has a predetermined density, the fractionation cell has a housing including a first axial end and a second axial end and the fractionation cell defines an interior carrier fluid flow-through channel, and an upper fluid outlet and a lower fluid outlet positioned below the upper fluid outlet, passing the carrier fluid and the particles through the upper fluid outlet and the lower fluid outlet, measuring a first concentration of particles passing through the upper fluid outlet, measuring a second concentration of particles passing through the lower fluid outlet, and determining a density of the particles based at least in part on the first concentration and the second concentration of particles.

Methods for determining the density of polymer particles for quality control materials using split flow thin (SPLITT) cell fractionation principle and fractionation cell for carrying out the methods

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Scarborough, ME, United States of America

Aravind Reghu