Dedusting plant (1, 40) for a test device (31) for small volume bulk materials (4 to 10) comprising a chamber (2) with a feed opening (3) for introducing small-volume bulk goods (4 to 10) into the chamber (2), - wherein the chamber (2) comprises a first exit opening (11) for dust and a second exit opening (12) for bulk materials (4 to 10), wherein above the first exit opening (11) and the second exit opening (12) one about an axis (A) pivotable bottom (13) is arranged, - wherein the bottom (13) has a first portion (17) and a second portion (18), - wherein the first section (17) has openings (19 to 21) which have a screen function so that dust can be removed from the chamber (2) via the first outlet opening (11), - And wherein the second portion (18) of the bottom (13) is closed.
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