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TAPPI T 233 cm-25:2024
Fiber length of pulp by classification
This method is designed to measure the weighted average fiber length of a pulp. If a fiber is 1 mm in length and weighs w mg, then for a given pulp, the weighted average length (L) is S(wl)/Sw, or the sum of the products of the weight times the length of each fiber divided by the total weight of the fibers in the specimen.
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Technical Association of the Pulp and Paper Industry [tappi]