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TAPPI UM 253
- Laboratory processing of pulp (ball or pebble-mill method)
- standard by Technical Association of the Pulp and Paper Industry, 04/01/2015
- Publisher: TAPPI
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This method concerns the processing of pulp by means of a laboratory ball or pebble-mill prior to forminghandsheets for determining pulp behavior when subjected to beating [see also TAPPI T 200 "Laboratory Processingof Pulp (Beater Method)," TAPPI T 248 "Laboratory Beating of Pulp (PFI Mill Method)," UM 221 "LaboratoryProcessing of Pulp (Plate Refiner)," and UM 258 "Laboratory Processing of Pulp (Kollergang Method)"]. Only thefurnishing and processing of the stock and the withdrawal and dilution of samples are described. The forming ofsheets is described in TAPPI T 205 "Forming Handsheets for Physical Tests of Pulp," their physical testing inTAPPI T 220 "Physical Testing of Pulp Handsheets," and their classification in TAPPI T 233 "Fiber Length of Pulpby Classification."
This method has the advantage of small specimen size and good reproducibility of beating action.
This method has the advantage of small specimen size and good reproducibility of beating action.
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