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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 – 14 of 14 results
1

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

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
2
Promotions Available

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

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
3

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

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
4

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

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
5

Eisco™ Dropping Funnel with Glass Key Stopcock

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
6

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

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
7
Promotions Available

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

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
8
Promotions Available

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

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
9

Synthware™ Solvent Addition Funnels
GREENER_CHOICE

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™ Glass Dropping Funnels with Screw Threads

Eisco™ Glass Dropping Funnels with Screw Threads are not graduated and include a PTFE stopcock.

Product Type Dropping Bottle
Color Clear
Quantity 1
Graduated No
Material Borosilicate Glass (3.3)
Stopper Material PTFE
For Use With (Application) Transfer liquid
Sterility Non-sterile
11

Eisco™ Glass Dropping Funnels, Open With PTFE Key Stopcock

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
12

Synthware™ Addition Funnels with High Vacuum Valve
GREENER_CHOICE

Used for filling containers

Product Type Addition Funnel
Material Glass
13

Eisco™ Ungraduated Dropping Funnel

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

14

Eisco™ Dropping Funnels with Rotaflow Stopcock

High quality borosilicate 3.3 glass funnel with screw cap Rotaflow stopcocks and interchangeable polypropylene stoppers

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