volumetric flask

基本解釋

Standard preparation —Weigh accurately 100 mg of USP Papain RS in a 100-mL volumetric flask. And add Buffer solution to dissolve.
標準試劑—精確稱取100mg RS級USP木瓜蛋白酶置于100mL容量瓶中，加入緩沖溶液使之溶解，再用緩沖溶液定容至刻度，混勻。
Dilute with Buffer solution to volume, and mix. Transfer 2.0 mL of this solution to a 50-mL volumetric flask, dilute with Buffer solution to volume, and mix.
移取2.0mL此溶液置于50mL容量瓶中，然后用緩沖溶液定容至刻度，混勻。
When you use this ERM, please carefully break open the ampoule at the neck and pipet 10 ml from the ampule into 250 ml volumetric flask and bring to volume by laboratory-pure water.
臨用時割開安瓿，用10毫升干燥潔凈移液管從安瓿中準確移取濃樣10 毫升于250 毫升容量瓶中，用純水定容。