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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 di 21 risultati
1

Lenz Laborglasinstrumente™ Imbuti contagocce cilindrici con tappo in PTFE

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.

Graduato Sì
Product Type Imbuto contagocce
Materiale Vetro borosilicato
2

Lenz Laborglasinstrumente™ Imbuti contagocce cilindrici con tappo in vetro

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.

Graduato Yes
Product Type Dropping Funnel
Materiale Borosilicate Glass
3

Pyrex™ Graduated Dropping Funnel with Glass Key

Used to transfer fluids.

Graduato Yes
Product Type Dropping Funnel
4

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

Has double graduated scale showing volume of liquid contained/delivered

Product Type Dropping Funnel
Materiale Borosilicate Glass
Descrizione PTFE closure
Include Cone
Certificazione/Conformità ISO 4800
5

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.

Quantità 1 Ea.
Autoclavabile Autoclavable
Materiale Boro 3.3, Polypropylene
Da utilizzare con (applicazione) 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
6

Lenz Laborglasinstrumente™ Cylindrical Dropping Funnel with Solid Glass Plug

Made of DURAN™ borosilicate glass. Lenz Laborglasinstrumente™ Cylindrical Dropping Funnel with Glass Plug includes pressure equalizing tubes. For use in liquid-liquid extractions to separate the components of a mixture into immiscible solvent phases of different densities.

7

Imbuto in vetro Quickfit™ con rubinetto d'arresto Rotaflo™ e chiave in PTFE

Con rubinetto d'arresto GP Rotaflo™ e chiavetta in PTFE. L'imbuto in vetro Quickfit™ con rubinetto d'arresto Rotaflo™ e chiavetta in PTFE non richiede lubrificazione o grassi contaminanti ed è esente da grippaggio con soluzioni caustiche. Conforme agli standard ISO 4800 Tipo 3.

Include GP Rotaflo™ stopcock with PTFE key, cone
Certificazione/Conformità ISO 4800
8

Pyrex™ Imbuto con chiavetta in vetro e gambo con cono Quickfit™

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

Include Ground glass cone, stopcock with glass key
Certificazione/Conformità ISO 4800
9

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.

Materiale Borosilicate Glass
Stopper Material PTFE
10

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

The dropping funnel allows a dosed addition of solutions.

Quantità 1 Ea.
Autoclavabile Autoclavable
Materiale Boro 3.3, Polypropylene
Da utilizzare con (applicazione) Uniform and metered liquid supply to a reaction mixture; Measuring liquid amounts
11

Lenz Laborglasinstrumente™ Cylindrical Dropping Funnels with PTFE plug

Made borosilicate glass. Lenz Laborglasinstrumente™ Cylindrical Dropping Funnels with PTFE Plug are excellent for transferring liquids.

12

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.

13

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

The dropping funnel allows a dosed addition of solutions.

Quantità 1 Ea.
Autoclavabile Autoclavable
Materiale Boro 3.3, Polypropylene
Da utilizzare con (applicazione) 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
14

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.

Quantità 10/Pk.
Autoclavabile Autoclavable
Materiale Borosilicate Glass (3.3)
Da utilizzare con (applicazione) Blank for further processing as dropping funnel; Phase separation
15

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
Materiale Borosilicate Glass