Método A - Alpine Sieve

Método B - Por mallas

Long. de la fibra, 6 mm., máx.
Pasa malla 150 μm (No.100), 70%(± 10%)

Long. de la fibra, 6 mm., máx.
Pasa No. 20 (850 μm), 85% (± 10%)
Pasa No. 40 (425 μm), 65% (± 10%)
No. 140 (106 μm), 30% (± 10%)