布氏漏斗Büchner funnel

漏斗颈通过橡胶塞或锥形橡胶垫圈插入抽滤瓶，颈口斜面应朝向抽滤瓶侧管的反方向，防止滤液被抽入真空管。滤纸剪成比内径略小的圆片，平铺盖住全部小孔，用少量溶剂润湿后先抽气使滤纸紧贴。与之相似的赫希漏斗（Hirsch funnel）呈锥形，适合少量样品；玻璃砂芯漏斗（烧结漏斗）无需滤纸，耐酸。

The funnel stem passes through a rubber bung or cone into the filter flask, with the bevel of the stem facing away from the side arm so filtrate is not drawn into the vacuum line. The paper is cut slightly smaller than the inner diameter, laid flat over all the holes, wetted with a little solvent and sucked down. The similar Hirsch funnel is conical and suits small samples, and sintered-glass funnels need no paper and resist acids.

1888 年德国工业化学家恩斯特·布赫纳发明。常有人误以为它是诺贝尔奖得主爱德华·布赫纳（发现无细胞发酵）发明的，其实是两个不同的人。

The German industrial chemist Ernst Büchner invented it in 1888. It is often wrongly credited to the Nobel laureate Eduard Buchner, who discovered cell-free fermentation; they were different people.

用于收集重结晶得到的晶体、分离合成反应中的固体产物、过滤沉淀，以及在大规模实验中快速过滤大量固液混合物。

It is used to collect recrystallised crystals, isolate solid products of syntheses, filter precipitates and rapidly filter large solid–liquid mixtures at scale.