British Standard Graticules - NG10, Electron Microscopy Sciences

Supplier: Electron Microscopy Sciences

British Standard Graticules - NG10, Electron Microscopy Sciences

British Standard Graticules - NG10, Electron Microscopy Sciences

68026-16 68026-19

100499-242EA 690.93 CAD

100499-242 100499-244

British Standard Graticules - NG10, Electron Microscopy Sciences

Graticules, Reticles and Grids

Originally designed by the National Coal Board for use in coal mining.

In this graticule the circle areas double progressively, hence the diameters alter by Root 2, so that the size classes can form a continuation of the standard series of sieves for particle sizing. Each particle is assigned to a size class defined by two adjacent circles, which represent the size limits of that class. Thus the distribution of size is obtained in terms of the diameter of circles having the same projected area as the particles. This method will cover particles in the range 150 micron to 0.38 micron. The size distributions with respect to their number and weight are determined separately. Final results are calculated as cumulative percents.

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