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For refining of pulp samples under laboratory conditions

  • Applicable standards
    ISO 5264-2
    DIN EN 25264-2
    SCAN C 24
    TAPPI T 248
    PAPTAC C.7


    • High precision of the revolution speed of the beating elements by frequency converter
    • Sturdy and lasting construction with a stainless steel frame
    • All materials used are corrosion resistant
    • Improved safety level by two-hand operation
    • No rotating components accessible
    • Easy handling and ergonomic design
    • Touch screen


    A pulp sample of 30 g (od) at 10% consistency is beaten between a roll with 33 bars and the smooth inside of the beater housing at a certain speed, with a certain pressure for a certain number of revolutions. Typical time for beating is between two and ten minutes.

    Test description

    A prepared pulp sample is distributed on the inside wall of the housing. After the roll has been swing in, both start buttons left and right of the mill are pressed. Die roll is lowered down into the housing and the cover is pneumatically closed. The beating elements are started automatically and the roll pressed against the sample with the selected force. At the end of the pre-set number of revolutions, the PFI mill is stopped automatically, which is then opened by pushing the two buttons left and right.


    • Roll and housing are made of stainless steel
    • Timing belt driven
    • Vernier screw for adjustable beating-gap
    • Pneumatic application and removal of the housing cover
    • Pneumatic opened and closed drain at the centre of the housing
    • Weight-loaded, ensures constant beating pressure

    Technical data

    Electricity: 400 V, 50 Hz
    Water supply: None
    Compressed air: 600 kPa
    Dimensions (WxDxH): 56x84x143 cm
    Dimensions (incl. swing out area for the roll) (WxDxH): 86x84x143 cm
    Net weight: 430 kg
    Gross weight: 520 kg



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