Fibre diameter distribution

The distribution of the fibre diameter in a wool sample. Distribution can be expressed as a frequency table or a frequency histogram with data grouped into class intervals of one micron, and integer micron values as midpoints of the class intervals. The results may also be expressed as a standard deviation, coefficient of variation and the percentage of fibres coarser than a given value such as 30 micron. Fibre diameter distribution is measured by both the Sirolan Laserscan and the OFDA instruments.