A volumeter for dropping any amount of liquid. A typical one is a long glass tube of uniform thickness with evenly marked graduations, a tapered tip and a stopcock. It is mainly used to drop standard solutions for volumetric analysis. Hard transparent glass burettes of about 25-50 mL are generally used, but colored glass burettes are used in cases where the burette is susceptible to photodecomposition. Typical burettes include chamber burettes with a bulge at the top, Schellbach burettes which make it easier to read the meniscus, and Mohs-Blalock burettes used for testing, but there are also horizontal burettes which are used in a horizontal position. For trace amounts, there are micrometer burettes, ultratrace burettes, Scholl's microburettes and horizontal ultratrace burettes. Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
任意量の液体を滴下するための体積計.普通のものは,太さが一様の長いガラス管に均等な目盛線を刻み,先端を細くし,コックをつけたもの.主として容量分析の標準液の滴下に用いられる.硬質透明ガラス製の25~50 mL 程度のものが一般に用いられるが,光分解を受けやすい場合には着色ガラスビュレットを用いる.上部に膨らみをもつチェンバービュレット,メニスカスを読みやすくしたシェルバッハビュレット,検定用のモース・ブラロック検定用ビュレットなどが代表的なものであるが,水平位置で用いる水平ビュレットもある.また,微量用としては,マイクロメータービュレット,超微量ビュレット,ショールのミクロビュレット,水平型超微量ビュレットなどがある. 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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