Buchner funnel

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Related to Buchner funnels: Hirsch funnel

Büch·ner fun·nel

(buk'nĕr),
a porcelain funnel that contains a perforated porcelain plate upon which filter paper can be laid.
Farlex Partner Medical Dictionary © Farlex 2012

Büchner,

Eduard, German chemist and Nobel laureate, 1860-1917.
Büchner extract - a cell-free extract of yeast.
Büchner funnel - a porcelain funnel that contains a perforated porcelain plate on which filter paper can be laid.
Medical Eponyms © Farlex 2012
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Initially wash the precipitate by decanting: pour off most of the liquid through the Buchner funnel (so as to catch small amounts of cobalt carbonate), add 20 mL of distilled water, stir up the suspension, and let the solid settle again.
Vacuum filtration setup (much preferred): Buchner funnel (7 cm or larger) Filter paper (7 cm or larger) Filter flask (125 mL or larger) Vacuum adapter Vacuum tubing Water aspirator or Gravity Filtration setup (possible but not recommended): 7 cm funnel Larger filter paper, folded into a cone (cotton ball inadequate) Erlenmeyer flask (125 mL)
A practical and educational synthesis of cobalt carbonate: Chris Garcia and David Kammler have experimented with cobalt carbonate and discovered a cost efficient alternative

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