We do grain-size analysis using a Sympatec HELOS KR laser-diffraction particle sizer that allows for grain size measurement in the range 0.15-2000 microns. Combined grain-size and grain-shape analysis in the range 2-400 microns (current set-up) is done using a Sympatec QICPIC dynamic image analyser.
The QICPIC instrument is equipped with a high performance camera and data compression module which supports the grabbing of up to 25 images of the suspended sediment particles per second, resulting in the storage of size and shape data of up to a few million individual particles per sample in just a few minutes time. The software offers simultaneous calculations of different particle size and shape characteristics. A particle gallery in combination with multiple filter functions supports the evaluation of the measured sediment sample, even if very large amounts of several million particles per sample are stored.