PROBLEM TO BE SOLVED: To provide a convenient-to-use weighing apparatus capable of performing weighing of powdered drugs efficiently.SOLUTION: A weighing apparatus 1 includes: a holder 22 for holding a plurality of powdered drug containers 21 arranged on the same plane; a moving mechanism 23 for moving the holder, and moving the powdered drug containers in a horizontal direction; a tray standby part 4 for holding a plurality of trays T; a delivery mechanism 24; a weighing part 3; a tray loading part; and a tray transfer part 5 for moving the trays. The trays held by the tray standby part are moved to the tray loading part by the tray transfer part; the holder is moved horizontally and a specific powdered drug container is moved to a delivery position above the tray loading part; powdered drugs are delivered from the powdered drug container by the delivery mechanism, and the powdered drugs are transferred to the tray; the weight of the powdered drugs transferred to the tray is detected by the weighing part; and the delivery of the powdered drugs by the delivery mechanism is stopped on condition that a predetermined amount of powdered drugs is transferred to the tray.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】効率良く散剤の秤量を行うことができて使い勝手の良い秤量装置を提供することを課題とする。【解決手段】 秤量装置1は、散剤容器21を同一平面に並べて複数保持する保持体22と、前記保持体を移動して前記散剤容器を水平方向に移動させる移動機構23と、トレイTを複数保持するトレイ待機部4と、払出機構24と、秤量部3と、トレイ載置部と、前記トレイを移動させるトレイ移送部5と、を有し、前記トレイ待機部に保持された前記トレイを前記トレイ移送部によって前記トレイ載置部に移動し、前記保持体を水平移動して特定の前記散剤容器を前記トレイ載置部の上方の払出位置に移動し、前記払出機構によって前記散剤容器から散剤を払い出して散剤を前記トレイに移し、前記トレイに移された散剤の重量を前記秤量部で検出し、所定量の散剤が前記トレイに移されたことを条件として前記払出機構による散剤の払い出しを停止する。【選択図】図3