Blain air permeability apparatus (Best qualitiy)

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Blaine Air Permeability Apparatus-
used for determining the fineness of Portland Cement measures the specific surface area of fine materials in square centimeters per gram of test sample. By using this apparatus, a quantity of air is drawn through a bed of definite porosity. The rate of airflow is determined by the pore volume in the bed, a function of the size of particles.
Components of the apparatus are a stainless-steel test cell, plunger, perforated disk, calibrated U-tube manometer, and rubber aspirator and bulb, and are all mounted on a sturdy wood panel with base. An 8oz bottle of red spirit manometer fluid, a package of filter paper, and a woodblock for holding the cell during filling are also included.