Particle Size Analysis

Overview of the Particle Size Analyser

Grain sizes of particles in suspension are measured by laser diffraction. The technique uses the scattering of light, delivered from a laser, that is passed through a chamber containing the particles in suspension. The scattered light is detected by a photo-detector array. The intensity of light on each detector is then converted into a particle size distribution plot that is calculated by mathemmatical algorithm. It is an elegant, simple, fast and flexible technique that produces high quality data.

• A Beckmann Coulter LS100 which measures the grain sizes of particles in suspension in the range 0.4um - 800um.

• A Beckmann Coulter LS230 with PIDS detector and variable speed fluid module This instrument measures grain sizes in suspension in the range 0.04um-2000um.

Access

Contact: Ann Mennim, by e-mail to Ann.Mennim@ed.ac.uk or telephone: 0131 650 8532

Charges

Users must provide an IT form, Purchase Order Number or Cost Centre prior to using the instrument.