| 单词 | filter flask |
| 释义 | > as lemmasfilter flask filter flask n. [after German Filtrierkolben (1865 or earlier)] Chemistry a conical flask with a short protruding tube on one side through which suction may be applied, typically used in vacuum filtration. ΚΠ 1869 T. E. Thorpe tr. R. Bunsen in London, Edinb. & Dublin Philos. Mag. 4th Ser. 37 17 In order to employ the consequent difference in pressure..for the purpose of filtration, it is only necessary to connect the mouth of the upper bottle with the tube of the filter-flask [G. Filtrirkolben]. 1964 P. J. Hills Small Scale Org. Prepar. i. 1 Small conical flasks are also useful as receivers in distillation, and side-arm conical flasks (filter flasks) are used in filtering operations. 2015 C. K. Zercher Org. Syntheses XII. 462 A 250-mL filter flask is equipped with a 5 cm porcelain funnel and filter paper. The paper is wetted with water (1–2 mL) and the product is isolated by vacuum filtration. < as lemmas |
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