Apparatus for and method of characterising particles

Abstract

The present invention provides an apparatus for characterising particles using nanoparticle tracking analysis (NTA). The apparatus comprises: a flow cell for containing a sample comprising a plurality of particles suspended in a fluid; a pump configured to provide a flow of the sample through the flow cell; a light source configured to illuminate the sample; an imaging system configured to collect light scattered or fluoresced by particles moving within the flow cell and within a detection region of the imaging system, and capture a video of the particles moving within the detection region; and a computer configured to process the video. The computer is configured to determine an estimated flow velocity of the sample through the flow cell. Determining the estimated flow velocity comprises performing 1-dimensional particle tracking in a direction perpendicular to an expected flow direction of the sample.

Dependencies are inferred from the claim text.