laboratory sample weighing 10 g will provide suficient material for all of fle u al fiber tests. When a smaller amount is suficient for the tests. the size of the pitches may be reduced accordingly. The xtmber of pinches may be reduced when the bulk lot sample is suficiently homogeneous for a smaller number to preserve represextativeness. NOTE 4-Most mechanical blending procedures require that the sample be passed through the blender tluee times to ensure adequate mixing