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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 20 results
1

Lenz Laborglasinstrumente™ Cylindrical Dropping Funnels, with Glass Plug

For the safe, easy and accurate transfer of fluids in the laboratory. Lenz Laborglasinstrumente™ Cylindrical Dropping Funnels, with Glass Plug are manufactured from durable DURAN™ borosilicate glass.

Product Type Dropping Funnel
Graduated Yes
Material Borosilicate Glass
2

Quickfit™ Glass Funnel with Rotaflo™ Stopcock and Open Top

Enables easy fitting to the top of Quickfit™ chromatography columns etc where protruding stem would be undesirable.

3

Quickfit™ Glass Funnel with Rotaflo™ Stopcock and PTFE Key

Fitted with GP Rotaflo™ stopcock with PTFE key. Quickfit™ Glass Funnel with Rotaflo™ Stopcock and PTFE Key does not require lubrication or contaminating greases and does not seize with caustic solutions. Complies with ISO 4800 Type 3 Standards.

Includes GP Rotaflo™ stopcock with PTFE key, cone
Certifications/Compliance ISO 4800
4

Quickfit™ Funnel with Ground Glass Cone

Manufactured from chemically resistant Pyrex™ Borosilicate Glass. Quickfit™ Funnel with Ground Glass Cone is designed for transferring powders into Quickfit™ flasks and vessels.

Includes Quickfit™ Ground Glass Cone
Diameter (Metric)Top 105mm
Product Type Powder Funnel
Material Borosilicate Glass,Borosilicate Glass
5

Pyrex™ Quickfit™ Glass Key and Stem with Cone

Add liquid to most Quickfit™ flasks and assemblies. Pyrex™ Quickfit™ Glass Key and Stem with Cone includes stopcock with interchangeable glass key.

Includes Ground glass cone, stopcock with glass key
Certifications/Compliance ISO 4800
6

Pyrex™ Borosilicate Graduated Glass dropping Funnels with Cone and PTFE Key

Has double graduated scale showing volume of liquid contained/delivered

Includes Cone
Description PTFE closure
Product Type Dropping Funnel
Material Borosilicate Glass
Certifications/Compliance ISO 4800
7

Lenz Laborglasinstrumente™ Pressure Equalizing Dropping Funnels, with PTFE Plug

Useful for transferring fluids and handling air-sensitive reagents in a sealed, inert-gas environment. Lenz Laborglasinstrumente™ Pressure Equalizing Dropping Funnels are manufactured from durable DURAN™ borosilicate glass.

Product Type Dropping Funnel
Graduated Yes
Material Borosilicate Glass
8

Pyrex™ Graduated Dropping Funnel with Glass Key

Used to transfer fluids.

Product Type Dropping Funnel
Graduated Yes
9

DWK Life Sciences DURAN™ Dropping Funnel, cylindrical, with scale, ground joint and pressure equalisation tube

The dropping funnel allows a dosed addition of solutions. Due to the pressure compensation tube a possible under- and overpressure is prevented.

Quantity 1 Ea.
Material Boro 3.3, Polypropylene
For Use With (Application) Uniform and metered liquid supply to a reaction mixture; Measuring liquid amounts; Dropping funnels with a volume of 250 mL (with socket: 29/32, cone: 24/29) and 500 mL (with socket: 29/32, cone: 24/29) are special sizes and not according to DIN ISO
Autoclavable Autoclavable
10

Lenz Laborglasinstrumente™ Funnels with NS cone

For the safe and easy mixing, pouring and storage of chemicals in the laboratory. Lenz Laborglasinstrumente™ Funnels with NS Cone are manufactured from durable DURAN™ borosilicate glass.

Product Type Addition Funnel (Solids)
Material Borosilicate Glass
11

Lenz Laborglasinstrumente™ Conical Dropping Funnels with PTFE Plug

Constructed from borosilicate glass. Lenz Laborglasinstrumente™ Conical Dropping Funnels with PTFE Plug are utilized in liquid-liquid extractions to separate a mixture into immiscible solvent phases of different densities.

Product Type Dropping Funnel
Material Borosilicate Glass
12

Lenz Laborglasinstrumente™ Conical Dropping Funnels with Glass Plug

Made of borosilicate glass. Lenz Laborglasinstrumente™ Conical Dropping Funnels with Glass Plug is used to manage the slow transfer of fluids with the featured stopcock to control the flow rate.

Product Type Dropping Funnel
Material Borosilicate Glass
13

DWK Life Sciences DURAN™ Blank for separating and dropping funnel, cylindrical with stopper bed for ISO 4800

Raw body for further processing as dropping funnel.

Quantity 10/Pk.
Material Borosilicate Glass (3.3)
For Use With (Application) Blank for further processing as dropping funnel; Phase separation
Autoclavable Autoclavable
14

DWK Life Sciences DURAN™ Dropping Funnel, cylindrical, with scale

The dropping funnel allows a dosed addition of solutions.

Quantity 1 Ea.
Material Boro 3.3, Polypropylene
For Use With (Application) Uniform and metered liquid supply to a reaction mixture; Measuring liquid amounts
Autoclavable Autoclavable
15

Lenz Laborglasinstrumente™ Dropping funnel, conical-shaped, with PTFE plug

Made of borosilicate glass. Lenz Laborglasinstrumente™ Dropping funnel, conical-shaped, with PTFE plug are used for transferring fluids. The funnel is fitted with a stopcock which allows the flow to be controlled.

Material Borosilicate Glass
Stopper Material PTFE