Filter funnels -

Duran glass filter crucibles

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• Borosilicate glass 3.3
• For drying of precipitates
• To be completed with conical seal 046571

Glass filter funnel

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• For 25, 47 or 90 mm membrane
• Filter glass holder, stainless steel or PTFE
• To be completed by ramp or vacuum flask

Filtration funnels Whatman

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• Glass filter funnel for fibreglass membranes
• With 3 removable clamps which ensure impermeability
• Easy to clean

Büchner filter funnels with vacuum socket

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• Büchner funnels for filtration under vacuum with sintered glass disc
• Made from borosilicate glass for increased resistance to chemical attacks
• Enables filtration of solutions that cannot be filtered by filter papers that are not resistant to acids and alkalis
• With Quickfit male socket to enable direct filtration in Quickfit® conical flasks for vacuum

Porcelain Büchner funnels

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Büchner filter funnels, rod with socket

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• Büchner funnels with sintered glass disc
• Made from borosilicate glass for increased resistance to chemical attacks
• Useful when classic filter papers would be destroyed by acids and alkalis
• Male socket on flow rod to adapt it to fit directly onto the Büchner Quickfit vacuum flasks

Büchner funnels with slit

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Büchner type filter funnels made from borosilicate glass 3.3.

Polypropylene Büchner funnels

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• Autoclavable
• Moulded in 2 pieces that can be easily separated
• Resistant to corrosion and heat
• Excellent chemical resistance

Büchner funnels

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• Autoclavable polypropylene
• Can be separated into two for easier cleaning

Watertight PTFE seals

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• For use with glassware equipped with a Quickfit flat socket flange
• Made from PTFE with excellent chemical resistance
• Ensure perfect impermeability with flat socket flanges

Seals for filter funnels

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Set of conical rubber filter cones for filter funnels. Parts from 22 to 84 mm.

Nalgene analytical test filter funnels

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Sterile, economical, graduated disposable funnel with a membrane for microbiological filtration and analysis.
The polypropylene squeeze and twist funnel is easy to remove for retrieval of the membrane.