Diamond Powders pass check on laser granulometer Horiba, which certified by Reatch Technology GmbH, it guarantees consistency declared sizes according to DIN or CSN standards. High-speed control of micron size distribution of powder grain is provided on Laser Particle Size Analyzer. A beam of coherent light from helium-neon laser comes through the sample of analized powder, which is being suspended in liquid, and refracted. On the difraction picture appears a number of concentric rings, with dia-meter depending on the size of grains. Measuring results are being given as a grain composition graph. It must be considered that the measurement results received on Laser Particle Size Analyzer need an adjustment with respect to the optical method of measurement declared in most state standards like FEPA, ANSI or GOST.

Optical microscope Zeiss equipped with high-resolution CMOS Camera and special Measurement Software VideoTest allows controlling precise size and shape distribution of grains. This is quite a slow method, featuring high accuracy of measuring and visual monitoring of samples micron powder, with sizes from 3 microns and more. Fine sizes of diamond powder from 0 up to 3µm are best controlled using an SEM microscope, SEM-photos, calibrated to measure size, are also processed by the measurement software.