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.
VWR® Graduated Addition Funnels with PTFE Stopcocks
Supplier: VWR International
VWR® Graduated Addition/Dropping funnels with PTFE Stopcocks are made from Borosilicate 3.3 glass, ASTM 438, Type 1, Class A standard.
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Instatherm® Addition Funnel, Ace Glass Incorporated
Supplier: Ace Glass
Graduated addition funnel with Instatherm® coating for critical heating
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Funnels, Pressure Equalizing, Graduated with Glass Stopcock, Ace Glass Incorporated
Supplier: Ace Glass
Cylindrical with standard taper joint top and bottom, drip stem, pressure equalizing arm and double scale graduations, calibrated from stopcock
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Addition Funnels, Cylindrical, Ace Glass Incorporated
Supplier: Ace Glass
These graduated, cylindrical, addition funnels have a reinforced [ST] 24/40 outer joint at the top and a 1:5 PTFE stopcock plug at bottom
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Pressure Equalizing Addition Funnel, Graduated, Ace Glass Incorporated
Supplier: Ace Glass
Cylindrical with standard taper joint top and bottom, drip stem, pressure equalizing arm and double scale graduations, calibrated from stopcock
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Addition Funnel, Cylindrical, Ace Glass Incorporated
Supplier: Ace Glass
This funnel is used for charging columns
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Ungraduated Addition Funnels with Pressure Equalizing Line, DWK Life Sciences
Supplier: DWK Life Sciences (KIMBLE)
Cylindrical shaped funnels.
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KONTES® Graduated Addition Funnels, [ST] Joints, Metering PTFE Plug Stopcock, Kimble Chase, DWK Life Sciences
Supplier: DWK Life Sciences (KIMBLE)
Cylindrical funnels have PTFE "Varibor" metering plug stopcock and double scale graduations
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Graduated Addition Funnels with Pressure Equalizing Line, DWK Life Sciences
Supplier: DWK Life Sciences (KIMBLE)
Cylindrical shaped funnel with glass or PFTE stopcock and lower drip tip. Graduations to the stopcock are numbered both up and down.
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Addition Funnels, Ungraduated with 1:5 PTFE Plug, Ace Glass Incorporated
Supplier: Ace Glass
Ungraduated, with a standard taper joint at top and bottom
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Addition Funnels with 1:5 PTFE Plug, Ace Glass Incorporated
Supplier: Ace Glass
Ungraduated with a standard taper joint top and bottom
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Addition Funnels, Graduated, Jacketed with PTFE Stopcock, Ace Glass Incorporated
Supplier: Ace Glass
Double scale graduated funnel with jacket for cooling with dry ice
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Addition Funnels, Graduated with Glass Plug, Ace Glass Incorporated
Supplier: Ace Glass
Cylindrical addition funnel with [ST] joint top and bottom, drip stem, double-scale graduated and calibrated up from the stopcock
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Addition/Storage Funnels, Ace Glass Incorporated
Supplier: Ace Glass
Permits solutions to be prepared with 89077-852 stirring magnet and added portion wise
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Addition Funnels, Offset, Ace Glass Incorporated
Supplier: Ace Glass
Graduated, borosilicate glass, liquid addition funnels with an offset bottom outlet and [ST] inner joint
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Addition Funnels, Graduated, Ace Glass Incorporated
Supplier: Ace Glass
Cylindrical addition funnel with [ST] joint top and bottom, drip stem, double-scale graduated and calibrated up from the stopcock



