01105naa a2200193 a 450000100080000000500110000800800410001910000230006024501240008326000090020752004690021665000160068565300160070165300360071765300360075370000200078970000190080977300830082810876252009-07-20       1990    bl uuuu     u00u1 u    #d1 aOLIVEIRA, M. M. de  aThe Effect of Diameter Variability and Medullation of Wool on Fibre Fineness Distribution Analyser (FFDA) Measurements.  c1990  aThe effect of medullation and variability of fibre diameter on FFDA measurements were investigated. For a FFDA fitted with the expanding (new) cell, medullated wools and more variable wools gave finer results than those obtained with the projection microscope. Equations correcting FFDA results for the degree of medullation are presented. It is suggested that calibration using a coarser top than those currently in use would improve measurements on coarse wools.  acalibration  acoarse tops  amedullations assessment methods  awool fibre diameter variability1 aTEASDALE, D. C.1 aKENNEDY. J. P.  tPesquisa Agropecuária Brasileira, Brasília, V. 25gn.3, p. 435-443, mar.1990