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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 – 14 de 14 résultats
1

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.

Certifications/Conformité USP Type I, ASTM E438 Type I
Description PTFE closure
Type de produit Addition Funnel
Numéro de joint 24/25
Matériau Borosilicate Glass
2

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

Graduations to stopcock are numbered both up and down

Certifications/Conformité USP, ASTM E438, Type I, Class A
Description PTFE closure
Type de produit Addition Funnel
Numéro de joint 24/40
Matériau Borosilicate Glass
Comprend Pressure equalizing lines, lower drip tip, stopcock
Graduée Yes
3

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

Reproducible addition rates achieved

Certifications/Conformité USP Type I, ASTM E438 Type I
Robinets d’arrêt 2
Type de produit Addition Funnel
Numéro de joint 24/40
Matériau PTFE
Comprend PTFE metering plug
Graduée Yes
Graduations 1 mL
4

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.

Certifications/Conformité USP Type I, ASTM E438 Type I
Description PTFE closure
Type de produit Addition Funnel
Numéro de joint 24/40
Matériau Borosilicate Glass
Graduée No
5

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

Cylindrical addition funnel with a pressure equalizing line.

Certifications/Conformité USP Type I, ASTM E438 Type I
Description Glass closure
Type de produit Addition Funnel
Numéro de joint 24/40
Matériau Borosilicate Glass
Comprend Pressure equalizing lines, stopcock
6

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

Supplied with a ground glass stopper and PTFE stopcock

Certifications/Conformité USP Type I, ASTM E438 Type I
Robinets d’arrêt 2
Type de produit Addition Funnel
Matériau Borosilicate Glass
Graduée Yes
Longueur (métrique) du tube 60mm
7

Synthware™ Solvent Addition Funnels
GREENER_CHOICE

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

Diamètre (métrique) supérieur 90mm
Type de produit Addition Funnel (Solvents)
Matériau Glass
8

Synthware™ Addition Funnels with High Vacuum Valve
GREENER_CHOICE

Used for filling containers

Type de produit Addition Funnel
Matériau Glass
9

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.

Couleur Clear
Robinets d’arrêt PTFE
Matériau Borosilicate Glass
Quantité 1
Matériau du bouchon Plastic
Comprend Stopper
Graduée No
Autoclavable Autoclavable
À utiliser avec (application) transferring liquids
10

Eisco™ Dropping Funnel with Glass Key Stopcock

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

Couleur Clear
Robinets d’arrêt Glass key
Type de produit Cylindrical Dropping Funnel
Matériau Borosilicate Glass
Quantité 1
Matériau du bouchon Polypropylene
Comprend funnel, stopper
Autoclavable Autoclavable
À utiliser avec (application) Titration, neutralization
11

Eisco™ Dropping Funnels with Rotaflow Stopcock

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

Couleur Clear
Robinets d’arrêt Rotaflow
Type de produit Cylindrical Dropping Funnel
Matériau Borosilicate Glass
Quantité 1
Matériau du bouchon Polypropylene
Comprend funnel, stopper
Autoclavable Autoclavable
À utiliser avec (application) Titration, neutralization
12

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.

Couleur Clear
Matériau Borosilicate Glass
Quantité 1
Graduée No
Autoclavable Autoclavable
13

Eisco™ Glass Dropping Funnels with Screw Threads

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

Couleur Clear
Type de produit Dropping Bottle,Dropping Bottle
Matériau Borosilicate Glass (3.3),Borosilicate Glass (3.3)
Stérilité Non-sterile
Quantité 1,1
Matériau du bouchon PTFE
Graduée No
À utiliser avec (application) Transfer liquid,Transfer liquid
14

Eisco™ Ungraduated Dropping Funnel

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