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a year ago

Hydrodynamic Radius extraction manually


In our Lab we have a Delsa instrument, it's nice, but I did not find how to get Hydrodynamic radius manually from the correlation curve. I don't want to get it automatically, I want to get it from the correlation curve. So how can I do it please? Because automatically, it's giving a very strange PDI (2.893e-09).

many thanks,


    Beckman Coulter - Delsa™Nano Series
    by Beckman Coulter

    Beckman Coulter - Delsa™Nano Series
    A New Generation of PCS and ELS Instruments

    The DelsaNano series is a new generation of instruments that use photon correlation spectroscopy (PCS), which determines particle size by measuring the rate of fluctuations in laser light intensity scattered by particles as they diffuse through a fluid, for size analysis measurements and/or electrophoretic light scattering (ELS), which determines electrophoretic movement of charged particles under an applied electric field from the Doppler shift of scattered light, for zeta potential determination.    This series has a broad range of capabilities, including conventional static and automatic titration measurements for both size and zeta potential distributions of suspended particles in a wide range of size and concentration. The DelsaNano also can measure zeta potential of a solid surface or film.