The observation that large kenaf particles have a higher absorbance than the medium and small particles raises the question if this is caused by a higher amount of kenaf pith in that fraction.Calculations show that differences pith content of 6%of the total mass can explain the difference in RV after centrifuging at 9.4G. But 19% difference in pith content (on total mass) is needed to explain the difference in water content after centrifuging at 940G.