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(biāo)準(zhǔn)試劑—精確稱取100mg RS級USP木瓜蛋白酶置於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此溶液置於50mL容量瓶中，然後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毫陞乾燥潔淨(jìng)移液琯從安瓿中準(zhǔn)確移取濃樣10 毫陞於250 毫陞容量瓶中，用純水定容。