
[分化] 量瓶;[分化] 容量瓶
When you use this ERM, please carefully break open the ampoule at the neck and pipette 10ml from the ampoule into 250 ml volumetric flask and bring to volume by purified water.
臨用時割開安瓿,用10毫升幹燥潔淨移液管從安瓿中準确移取濃樣10 毫升于250 毫升容量瓶中,用純水定容。
When you use this ERM, please carefully break open the ampoule at the neck and pipette10 ml from the ampoule into 250 ml volumetric flask and bring to volume by 1% HNO3 solution.
臨用時割開安瓿,用10毫升幹燥潔淨移液管從安瓿中準确移取濃樣10 毫升于250 毫升容量瓶中,用1%硝酸定容。
When you use this ERM, please carefully break open the ampoule at the neck and pipette 10 ml from the ampoule into 250 ml volumetric flask and bring to volume by 1% HNO3 or 1% HCl.
臨用時割開安瓿,用10毫升幹燥潔淨移液管從安瓿中準确移取濃樣10毫升于250毫升容量瓶中,用1%硝酸或1%鹽酸定容。
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毫升幹燥潔淨移液管從安瓿中準确移取濃樣10 毫升于250 毫升容量瓶中,用純水定容。
When you use this ERM, please carefully break open the ampoule at the neck and pipette 10 ml from the ampoule into 250 ml volumetric flask and bring to volume by 0.1% NaOH solution.
臨用時割開安瓿,用10毫升幹燥潔淨移液管從安瓿中準确移取濃樣10 毫升于250 毫升容量瓶中,用0.1%************定容。
|measuring flask/graduated flask;[分化]量瓶;容量瓶
volumetric flask(容量瓶)是一種用于精确配制特定體積溶液的實驗室玻璃器皿。其核心特征和用途如下:
精确體積測量
容量瓶的頸部有一圈精細的環形刻線(标線),當液體的彎月面底部與标線相切時,瓶内液體的體積即為瓶身标注的标準體積(如100mL、250mL)。這種設計确保了溶液定容的高精度,誤差通常小于0.1%,適用于定量分析。
結構特點
主要應用場景
主要用于配制标準溶液(如滴定用試劑)或精确稀釋樣品。操作時需将溶質溶解後,用溶劑稀釋至标線,并反複倒置搖勻以保證濃度均勻。
權威參考文獻來源:
注:因未搜索到相關網頁,暫未提供具體鍊接。建議查閱NIST官網或化學領域權威教材獲取詳細标準。
"Volumetric flask"(容量瓶)是化學實驗室中用于精确配制溶液的玻璃器皿,其核心特點與用途如下:
使用時需注意平視刻度線、溫度控制(标準20°C)及避免倒置震蕩,這些細節直接影響配制精度。
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