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Addition Funnels

Addition Funnels

Addition funnels are used in the lab to allow for the slow and controlled addition of a reagent solution to a reaction. The funnels provide the ability to control the temperature, speed and extent of the reactions. These funnels are typically cylindrical and are available with or without graduation marks for easier measuring. Some funnels feature a pressure equalizing arm and stoppers that disconnect from the funnel, leaving fluids isolated and unexposed. The funnels have ground outer joints, allowing them to securely fit into reaction flasks, and their protected drip stems do not extend beyond a standard taper joint. A stopcock at the base of an addition funnel allows for the transfer of a solution.
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1 – 15 of 240 results
1

DWK Life Sciences Kimble™ Kontes™ Pressure Equalizing Lines, standard taper Stopcocks, Ground Joint Funnels
SDP

Cylindrical addition funnel with a pressure equalizing line.

Includes Pressure equalizing lines, stopcock
Description Glass closure
Product Type Addition Funnel
Joint Number 24/40
Material Borosilicate Glass
Certifications/Compliance USP Type I, ASTM E438 Type I
2

DWK Life Sciences Kimble™ Kontes™ PTFE-Plug Stopcocks, Graduations, Pressure Equalizing Lines, Ground Joint Funnels
SDP

Graduations to stopcock are numbered both up and down

Includes Pressure equalizing lines, lower drip tip, stopcock
Description PTFE closure
Product Type Addition Funnel
Joint Number 24/40
Graduated Yes
Material Borosilicate Glass
Certifications/Compliance USP, ASTM E438, Type I, Class A
3

DWK Life Sciences Kimble™ Kontes™ Funnel with PTFE-Plug Stopcock, Ground Joints
SDP

Ungraduated cylindrical addition funnel with PTFE stopcock manufactured from 33 expansion, low extractable borosilicate glass. Available with 250mL or 500mL capacity.

Description PTFE closure
Product Type Addition Funnel
Joint Number 24/40
Graduated No
Material Borosilicate Glass
Certifications/Compliance USP Type I, ASTM E438 Type I
4

DWK Life Sciences Kimble™ KIMAX™ Addition Funnel with PTFE Stopcock
SDP

Supplied with a ground glass stopper and PTFE stopcock

Stopcock 2
Product Type Addition Funnel
Length (Metric) Stem 60mm
Graduated Yes
Material Borosilicate Glass
Certifications/Compliance USP Type I, ASTM E438 Type I
5

DWK Life Sciences Kimble™ Kontes™ PTFE-Plug Stopcocks, Stoppers, Ground Joints Funnels
SDP

Ungraduated cylindrical addition funnel with PTFE stopcock and glass stopper. It is manufactured from 33 expansion, low extractable borosilicate glass.

Description PTFE closure
Product Type Addition Funnel
Joint Number 24/25
Material Borosilicate Glass
Certifications/Compliance USP Type I, ASTM E438 Type I
6

DWK Life Sciences Kimble™ Kontes™ Graduated Addition Funnels with PTFE Metering Plug
SDP

Reproducible addition rates achieved

Includes PTFE metering plug
Stopcock 2
Product Type Addition Funnel
Joint Number 24/40
Graduated Yes
Material PTFE
Certifications/Compliance USP Type I, ASTM E438 Type I
Graduations 1 mL
7

Synthware™ Addition Funnels with High Vacuum Valve
GREENER_CHOICE SDP

Used for filling containers

Product Type Addition Funnel
Material Glass
8

Heidolph™ Radleys Solid Additions Funnel
SDP

Heidolph™ Reactor-Ready™ Swan Neck Adapter features Rodaviss joints

9

Synthware™ Solvent Addition Funnels
GREENER_CHOICE SDP

Permits addition of solvents to flash chromatography columns without disturbing silica-gel/packing layer

Diameter (Metric)Top 90mm
Product Type Addition Funnel (Solvents)
Material Glass
10

Eisco™ Ungraduated Dropping Funnel
SDP SCI_ED

Features a 100 mL capacity, Rotaflow stopcock, and is fitted with a 19/26 interchangeable plastic stopper

11

Eisco™ Dropping Funnel with Glass Key Stopcock
SDP SCI_ED

High quality borosilicate 3.3 glass cylindrical dropping funnels with glass key stopcocks and interchangeable polypropylene stoppers

Includes funnel, stopper
Stopcock Glass key
Product Type Cylindrical Dropping Funnel
Color Clear
Quantity 1
Material Borosilicate Glass
Stopper Material Polypropylene
For Use With (Application) Titration, neutralization
Autoclavable Autoclavable
12

Eisco™ Glass Dropping Funnels, Open With PTFE Key Stopcock
SDP SCI_ED

Glass dropping funnels are open and made from high quality borosilicate glass. Cylindrical shape with PTFE key stopcocks. Autoclavable.

Color Clear
Quantity 1
Graduated No
Material Borosilicate Glass
Autoclavable Autoclavable
13

Eisco™ Glass Dropping Funnel, Pressure Equalizing with Glass Key Stopcock, 100 ml
SDP SCI_ED

Pressure equalizing dropping funnel made from high quality borosilicate glass. Cylindrical shape with glass key stopcock and interchangable platic stopper. Autoclavable.

14

Eisco™ Glass Dropping Funnels with PTFE Stopcock, Interchangable Plastic Stopper
SDP SCI_ED

Glass dropping funnels made from high quality borosilicate glass. Cylindrical shape with PTFE key stopcocks and interchangable polypropylene stoppers. Autoclavable.

Includes Stopper
Stopcock PTFE
Color Clear
Quantity 1
Graduated No
Material Borosilicate Glass
Stopper Material Plastic
For Use With (Application) transferring liquids
Autoclavable Autoclavable
15

Chemglass Life Sciences 250mL Powder Addition Funnel, 24/40 Joint Size, Auger B
SDP

250mL Powder Addition Funnel, 24/40 Joint Size, Auger B. Facilitates the delivery of free-flowing, granular solids into reactions. Pressure equalizing arm is equipped with a vented stopper for air-free operations and also permits access into the delivery stem for easy clean-out. One piece, easily removed grooved PTFE auger delivers powders at a uniform rate. The 250 and 500mL capacities have the larger, deep cut auger (Size B) for use with coarse material. Funnel has a lower inner joint and top outer, both being the size listed.

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