Table 2.
Criteria of fiber quality for pulp and paper manufacturing

Criteria	Class I		Class II		Class III
	Requirement	Value	Requirement	Value	Requirement	Value
	Fiber length (μm)	>2000	100	1000-2000	50	<1000	25
Runkle ratio (RR)	<0.25	100	0.25-0.50	50	>0.50	25
Felting power (FP)	>90	100	50-90	50	<50	25
Muhlsteph ratio (MR)	<30	100	30-60	50	>60	25
Flexibility ratio (FR)	>0.80	100	0.50-0.80	50	<0.50	25
Coef. of rigidity (CR)	<0.10	100	0.10-0.15	50	>0.15	25
SCORING	450-600		225-449		<225