Dropping Funnels
The dropping funnels manage the slow content transfer with the featured stopcock. Stoppers disconnect the funnel and pressure equalizing arm leaving sensitive fluids isolated and unexposed. Typically cylindrical, the laboratory glassware comes with or without calibrated graduations for visible measuring during reagent addition. Protected drip stems will not extend beyond standard taper joint and the ground outer joints allow vessel to fit securely into reaction flask. Dropping funnels are available in different capacities.
Airfree® Schlenk Addition Funnels, Graduated, with Glass T-Bore Stopcock, Chemglass
Supplier: Chemglass
Pressure equalizing addition funnel, with graduations and a glass T-Bore stopcock in the equalizing arm to permit purging and isolation of the funnel contents for storage.
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Eisco Dropping Funnels with Screw Type Needle Valve PTFE Rotaflow Stopcocks
Supplier: Wards
Dropping Funnels with PTFE Rotaflow needle valve stopcocks and sockets fitted with interchangeable plastic stoppers.
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Solvent Addition Funnels, Chemglass
Supplier: Chemglass
Funnel design permits addition of solvents to flash chromatography columns without disturbing the silica-gel/packing layer.
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Funnels, Addition, Graduated, Glass Stopcocks, Chemglass
Supplier: Chemglass
Cylindrical style addition funnels feature a double scale of numbers.
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Polypropylene Solvent Addition Funnel Pack, Chemglass
Supplier: Chemglass
Unbreakable, polypropylene solvent addition funnels are ideal for use with chromatography columns.
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TLG® Pressure Equalizing Funnels with Double Stopcock, Sati International
Supplier: CHEM SCIENCE INC CA
Additional straight bore glass or Teflon® stopcock in the pressure equalizing line. Graduation marks on glass.
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Dropping Funnel with Needle Valve
Supplier: Wards
Cylindrical dropping funnel made of borosilicate glass with a 100 ml capacity, equipped with a 19/26 plastic stopper and a needle valve stopcock for precise control during liquid dispensing, ideal for experimental setups and chemical processes.
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Addition Funnels with Threaded Valves, Chemglass
Supplier: Chemglass
Cylindrical style addition funnel with a threaded, grease-free extended tip valve. Standard taper top outer joint and lower inner joint, both being the same size, and pressure equalizing arm.
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Squibb Dropping Funnels
Supplier: Wards
Made of borosilicate glass, with interchangeable plastic stopper and glass stopcock.
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Funnel With Attached Screen, Mortech
Supplier: Mopec
Stainless steel funnel and screen used for formalin collection systems and specimen pour-off.
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Funnels, Addition, Graduated, PTFE Metering Stopcocks, Chemglass
Supplier: Chemglass
Cylindrical style addition funnels feature a PTFE adjustable bore metering plug.
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Addition Funnels with Glass Stopcock, Chemglass
Supplier: Chemglass
Cylindrical style addition funnel with a standard taper top outer joint and lower inner joint, both being the same size.
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Addition Funnels with PTFE Stopcocks, Chemglass
Supplier: Chemglass
Cylindrical shape addition funnel with PTFE stopcocks.
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TLG® Pressure Equalizing Funnels with High Vacuum Valve, Sati International
Supplier: CHEM SCIENCE INC CA
Teflon® extended tip valve for semi-needle valve adjustment.
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Funnels, Addition, Graduated, PTFE Stopcocks, Chemglass
Supplier: Chemglass
Cylindrical style addition funnels feature a stopper.
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Airfree® Schlenk Addition Funnels, Chemglass
Supplier: Chemglass
Lower outlet is a standard taper inner joint with a 0 to 4 mm Chem-Vac™ Chem-Cap® valve.



