The present invention relates to an apparatus for dispensing lightweight, bulk material, particularly permeated, perlummetric metric, from a measuring container (13) provided with an upper material inlet (1) from a silo and a lower opening (9) leading to the mixer (9). ) formed from two telescopically sliding telescopically adjustable portions (5,6) defining the height of the measuring container (13) and movable against each other (5,6) below and above the maximum filling height (8) and the lower part (6) of the weighing tank is connected to the mixer by a flexible connection, moreover, when the desired filling height of the material is reached, a measuring nozzle (3) which closes the inlet opening is arranged on the weighing tank (13). above the maximum filling height there is a single ventilation device and a second measuring strainer is arranged above the material outlet (2), furthermore the upper and lower locking devices (8, 9) are controlled by the luminous signals, the upper and lower locking devices (8, 9) and (7) are connected to a computer and control unit, and the air handling unit is fitted with a lint filter. ŕ
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