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SKU 200CERFUNN
USA Lab
200MM Ceramic Buchner Funnel
$90.00
In stockGlazed ceramic Buchner filtration funnel in the 200 mm size, with a flat perforated filter plate and a tapered stem for a stoppered filter flask. The larger plate area shortens filtration time at a given vacuum compared with the 150 mm funnel in the same range. The listing covers the funnel alone.
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Description
A 200 mm Buchner filtration funnel in glazed ceramic, the middle size in a range that also runs at 150 mm and 250 mm. The flat perforated plate supports a filter paper disc, vacuum applied to the receiving flask draws the filtrate through, and the tapered stem seats into a stopper or filter-flask adapter.
The whole funnel, plate included, is glazed ceramic. There is no sintered frit to blind or back-flush, and no elastomer seal in the funnel itself; cleaning is a wipe-down of a glazed surface.
Specification
- Nominal size: 200 mm
- Construction: glazed ceramic throughout, including the perforated filter plate
- Outlet: plain tapered stem, no ground-glass joint
- SKU: 200CERFUNN
Filter paper, stoppers, adapters and the receiving flask are not part of this SKU.
Frequently asked questions
What size filter paper does it take?+
Size the paper to the perforated plate, not to the 200 mm funnel designation. The plate diameter is smaller than the funnel body, so measure the plate on arrival before ordering discs in quantity.
What is supplied with the funnel?+
SKU 200CERFUNN covers the ceramic funnel on its own. Filter paper, stoppers, adapters and the receiving flask are not listed as part of it.
What is the funnel made of?+
Glazed ceramic throughout, including the perforated filter plate. No glass, plastic or elastomer components are used in the funnel body.
How does it mount to a filter flask?+
Via a plain tapered stem seated in a stopper or a filter-flask adapter sized to your flask neck. There is no ground-glass joint, so it will not mate directly to a standard-taper socket.
Should I choose 150 mm, 200 mm or 250 mm?+
Choose on filtration area against batch volume and on the receiving flask you already own. The 200 mm plate clears a given volume faster than the 150 mm at the same vacuum, but the funnel is heavier and the loaded cake correspondingly larger, so check that your flask and stopper can carry it safely.
