Long Time Materials
1580< Refractoriness< 1770
Funnel
Refractory Material
Grey White
Filter Paper
20-350mm
Filter
Porcelain
shangtao
Plywood Case or Carton
Rohs
Shanghai, China
8547100000
Product Description
A Buchner funnel is a porcelain funnel with a flat, perforated bottom. This funnel is used only for vacuum filtration. A holed rubber stopper or adapter is needed to hold the funnel in place inside the neck of a suitably-sized filter flask. When the side-arm of the filter flask is attached to the aspirator (or to a vacuum trap attached to the aspirator), any liquid poured into the top of the Buchner funnel is quickly sucked into the flask, ideally leaving any particulate matter or precipitate on the filter paper inside the funnel. Any precipitate can then be effectively air-dried simply by leaving the vacuum connected, drawing air through the precipitate. Sizes may vary.
Specification of Funnels with perforated Filter Disc, Glazed
| OD (mm) | Dia.of tube (mm) | Total height (mm) | Bowl height (mm) | Perforations dia.(mm) | No of Perforations |
| 20 | 10 | 45 | 15 | 2 | 19 |
| 40 | 14 | 65 | 22 | 2 | 37 |
| 50 | 16 | 80 | 25 | 2 | 37 |
| 60 | 18 | 100 | 30 | 2 | 51 |
| 80 | 22 | 130 | 40 | 2 | 51 |
| 100 | 24 | 150 | 45 | 2 | 88 |
| 120 | 30 | 170 | 60 | 2 | 123 |
| 130 | 32 | 190 | 65 | 2 | 123 |
| 150 | 36 | 220 | 70 | 2 | 164 |
| 180 | 40 | 250 | 80 | 2.5 | 212 |
| 200 | 45 | 270 | 90 | 2.5 | 212 |
| 250 | 50 | 310 | 110 | 2.5 | 326 |
| 300 | 60 | 380 | 140 | 2.5 | 463 |
