A technique for the high precision grain size analysis of soils, various industrial powders and building materials. Measurements are made after pretreatment and ultrasonic homogenisation of samples, using two linearly polarised laser beams. The determination of grain size is based on the principle of laser diffraction. The measurement range of the equipment is 0.08 – 2000 μm. The analysis requires 1 – 2 g of material.

30 – 50 samples can be pretreated in one day, the laser analysis of the same batch takes another day.