Bauer-McNett fractionator is for measuring the weight-average fiber length of pulp fiber according to screening method by pulp and paper-making laboratory.

TAPPI T233cm, SCAN M6

Fill pulp suspension into classifier, and each classifier container is equipped with sieve, The containers are stepped, and when the pulp suspension flows from one container to another, pulp of different fiber lengths is retained on different sieves. The fiber length of the retained pulp is consistent with the mesh size of the sieve plate. After sieving at a certain water flow rate for a certain period of time. Collect the fibers on each sieve plate, dry them, and after constant weight, report the results of the mass percentage of the input sample based on the amount of fibers remaining on each mesh.