Filtering Funnels

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  • Funnel has a sealed-in glass fritted disc of the listed porosity. Useful wherever filter paper or membranes cannot withstand the chemical attack of the filtrate. Constructed with heavy wall stems and the top of the funnel is beaded for additional strength. Not recommended for use where pressure…

  • This unique disposable filter funnel system for solid-liquid separation can be used in chemistry and biological laboratories. The system consists of a polypropylene filter funnel with diatomaceous earth/polyethylene fritted disc, a CG-1049-J style glass vacuum adapter, and a flask or vial. The…

  • Glassware system for vacuum filtration using 47mm membranes. Assembly is designed for use with vacuum manifolds or optional plastic coated filtering flask. Support base has a sealed-in coarse porosity fritted disc. Complete assembly includes a 300mL graduated funnel, aluminum clamp, support base…

  • Cylindrical style addition funnel with a standard taper top outer joint and lower inner joint, both being the same size. With pressure equalizing arm and glass stopcock. Funnels with 14/20 and 19/22 joints are supplied complete with a stopper. For replacement stoppers see CG-3000.

  • Similar to CG-1402 but with a water jacket enclosing the funnel bowl and upper portion of the stem. Jacket permits heating or cooling of the contents of the funnel during filtration. Stem length listed is the length below the jacket.

  • This unique disposable filter funnel system for solid-liquid separation can be used in chemistry and biological laboratories. The system consists of a polypropylene filter funnel with diatomaceous earth/polyethylene fritted disc, a CG-1049-J style glass vacuum adapter, and a flask or vial. The…

  • Disposable filter funnel for solid-liquid separation can be used in chemistry and biological laboratories. The molded funnel has a 10 micron polyethylene fritted disc. Polypropylene filter funnel is designed for use with the CG-1049-J style glass vacuum adapter and a flask or vial. The CG-1049-J…

  • Glassware system for vacuum filtration using 47mm membranes. This assembly uses a standard taper 40/35 joint to connect the support base to the filtering flask, eliminating the possiblility of phthalate contamination from rubber stoppers. Recommended for filtering corrosive solutions, particulate…

  • For positive pressure filtration of materials up to 15 psi. Connection between the funnel and adapter is made by an o-ring joint which permits a larger, grease free opening for sample retrieval. The 24/40 lower inner standard taper joint has an outlet for connection to a vacuum source. Complete…

  • Filter Apparatus

    Chemglass

    Useful for direct filtration applications of small volumes under vacuum. Complete apparatus consists of a Buchner funnel with 14/20 top outer and lower inner joints, and a 50mL Erlenmeyer flask having a 14/20 outer joint.

  • Duran® heavy wall filtering flask has a unique removable PPN hose connection. Hose connection is secured to the flask via a silicone rubber seal. Bottle shape filter flask, PLASTIC COATED, with removable PPN hose connection. For replacement PPN hose connection sets see CG-1563.

  • This unique disposable filter funnel system for solid-liquid separation can be used in chemistry and biological laboratories. The system consists of a polypropylene filter funnel with silica gel/polyethylene fritted disc, a CG-1049-J style glass vacuum adapter, and a flask or vial. The…

  • Buchner style filter funnel having a lower standard taper inner joint and serrated tubulation for connection to a vacuum source. Disc diameters and height above the disc are the same as CG-1402.

  • Buchner funnels having a perforated plate rather than a fritted disc. Funnels accept filter paper size as listed.

  • Cylindrical style addition funnel similar to CG-1710, but with a PTFE stopcock. Funnels with 14/20 and 19/22 joints are supplied complete with a stopper. For replacement stoppers see CG-3000.

  • Jacket permits the cooling of the contents of the funnel by means of dry ice. Drain outlet is 8mm O.D. With a standard taper top outer joint and lower inner joint, both being the same size, and pressure equalizing arm.

  • Fritted filter funnel has a choice of coarse or medium porosity fritted disc. Lower outlet is a standard taper inner joint and has a CG-961-01 0-4mm Chem-Vac™ Chem-Cap® valve. Top outer joint is the same size as the lower inner joint. Capacity listed is that above the fritted disc.…

  • Cylindrical style addition funnel with a threaded, grease-free extended tip valve. Design of all PTFE plug permits semi-needle valve action. With a standard taper top outer joint and lower inner joint, both being the same size, and pressure equalizing arm. Funnels with 14/20 and 19/22 joints are…

  • Buchner style filter funnel having a lower standard taper inner joint and serrated tubulation for connection to a vacuum source. Disc diameters and height above the disc are the same as CG-1402. Improved design incorporates a delivery stem being sealed within the inner joint to prevent breakage.…

  • Used in applications where it is necessary to wash and re-dissolve the precipitate with chemicals that would attack standard filter paper. The 60º angle on the funnel permits removal of precipitates.

  • Cylindrical style addition funnel with a standard taper top outer joint and lower inner joint, both being the same size. With pressure equalizing arm and PTFE stopcock. Funnels with 14/20 and 19/22 joints are supplied complete with a stopper. For replacement stoppers see CG-3000.

  • Cylindrical style addition funnel graduated with a double scale of numbers, one up from the stopcock and one down from the capacity line. With a standard taper top outer joint and lower inner joint, both being the same size, and pressure equalizing arm. Funnels with 14/20 and 19/22 joints are…

  • Cylindrical style graduated addition funnel has a threaded, grease-free extended tip valve. Design of all PTFE plug permits semi-needle valve action. With a standard taper top outer joint and lower inner joint, both being the same size, and pressure equalizing arm. Funnels with 14/20 and 19/22…

  • Cylindrical style addition funnel similar to CG-1716, but with PTFE stopcocks. Funnels with 14/20 and 19/22 joints are supplied complete with a stopper. For replacement stoppers see CG-3000.

  • Similar to CG-1402, but with the height above the disc increased by 33% for greater capacity. Not recommended for use where pressure would exceed 15 PSI.

  • Cylindrical shape addition funnel with PTFE stopcocks. For replacement stoppers see CG-3000.

  • Cylindrical style addition funnel with a PTFE adjustable bore metering plug. Turning the adjustment knob allows flow rate to be controlled from dropwise to full flow. For replacement stoppers see CG-3000.

  • Similar to AF-0542 but with the top having a standard taper inner joint instead of the outer joint. Available with a choice of a 2mm high vacuum glass stopcock having a S.S. constant pressure retaining device or a 0-4mm Chem-Cap® Airfree® inlet valve.

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