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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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16 – 30 of 238 results
16

Eisco™ Ungraduated Dropping Funnel
SDP SCI_ED

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

17

Eisco™ Dropping Funnels with Rotaflow Stopcock
SDP SCI_ED

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
18

Chemglass Life Sciences 250mL Addition Funnel, Graduated, 24/40 Joint Size, 2mm PTFE Stpk, 375mm OAH
SDP

250mL Addition Funnel, Graduated, 24/40 Joint Size, 2mm PTFE Stpk, 375mm OAH. Cylindrical style addition funnel similar to CG-1716, but with PTFE stopcocks. Funnels with 14/20 and 19/22 joints are supplied complete with a stopper. For replacement stoppers see CG-3000.

ENCOMPASS_PREFERRED
19

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.

ENCOMPASS_PREFERRED
20

Chemglass Life Sciences 25mL Addition Funnel, Graduated, 24/40 Joint Size, 2mm Glass Stpk, 245mm OAH
SDP

25mL Addition Funnel, Graduated, 24/40 Joint Size, 2mm Glass Stopcock, 245mm OAH. Cylindrical style addition funnel graduated with a double scale of numbers, one up from the stopcock and one down from the capacity line. With a standard taper top outer joint and lower inner joint, both being the same size, and pressure equalizing arm. Funnels with 14/20 and 19/22 joints are supplied complete with a stopper. For replacement stoppers see CG-3000.

ENCOMPASS_PREFERRED
21

Chemglass Life Sciences 250mL Addition Funnel, Graduated, 24/40 Joint Size, 2mm PTFE Metering Stpk, 375mm OAH
SDP

250mL Addition Funnel, Graduated, 24/40 Joint Size, 2mm PTFE Metering Stopcock, 375mm OAH. Cylindrical style addition funnel with a PTFE adjustable bore metering plug. Turning the adjustment knob allows flow rate to be controlled from dropwise to full flow. For replacement stoppers see CG-3000.

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22

Ace Glass, Inc. 250mL graduated cylindrical funnel, 24/40 top, 24/40 bottom
SDP

250ML 24/40-24/40 FUNNEL

ENCOMPASS_PREFERRED
23

Chemglass Life Sciences 2000mL Addition Funnel, 24/40 Joint Size, 6mm PTFE Stpk, 530mm OAH
SDP

2000mL Addition Funnel, 24/40 Joint Size, 6mm PTFE Stopcock, 530mm OAH. Cylindrical style addition funnel with a standard taper top outer joint and lower inner joint, both being the same size. With pressure equalizing arm and PTFE stopcock. For replacement stoppers see CG-3000.

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24

Ace Glass, Inc. 500mL 24/40 addition funnel, PTFE stopcock plug, ungraduated
SDP

500mL short stem addition funnel with 24/40 top and bottom joints, and a PTFE stopcock plug. Funnel is not graduated.

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25

Chemglass Life Sciences 60mL Addition Funnel, 24/40 Joint Size, 2mm PTFE Stpk, 265mm OAH
SDP

60mL Addition Funnel, 24/40 Joint Size, 2mm PTFE Stopcock, 265mm OAH. Cylindrical style addition funnel with a standard taper top outer joint and lower inner joint, both being the same size. With pressure equalizing arm and PTFE stopcock. For replacement stoppers see CG-3000.

ENCOMPASS_PREFERRED
26

Chemglass Life Sciences 10mL Addition Funnel, Graduated, 14/20 Joint Size, 2mm PTFE Metering Stpk, 205mm OAH
SDP

10mL Addition Funnel, Graduated, 14/20 Joint Size, 2mm PTFE Metering Stopcock, 205mm OAH. Cylindrical style addition funnel with a PTFE adjustable bore metering plug. Turning the adjustment knob allows flow rate to be controlled from dropwise to full flow. For replacement stoppers see CG-3000.

ENCOMPASS_PREFERRED
27

Ace Glass, Inc. 50mL graduated cylindrical funnel, 14/20 top, 14/20 bottom, metering valve stopcock plug
SDP

50mL graduated cylindrical funnel with 14/20 top and bottom joints, a drip stem, and double scale graduations that are calibrated from the stopcock. Drip stem does not extend beyond the joint, thereby eliminating a possible source of breakage. Funnel has a metering valve stopcock plug.

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28

Chemglass Life Sciences 1000mL Addition Funnel, 24/40 Joint Size, 4mm Stpk, 520mm OAH
SDP

1000mL Addition Funnel, 24/40 Joint Size, 4mm Stopcock, 520mm OAH. Cylindrical shape addition funnel with PTFE stopcocks. For replacement stoppers see CG-3000.

ENCOMPASS_PREFERRED
29

Chemglass Life Sciences 1000mL Addition Funnel, Graduated, 24/40 Joint Size, 4mm PTFE Stpk, 525mm OAH
SDP

1000mL Addition Funnel, Graduated, 24/40 Joint Size, 4mm PTFE Stpk, 525mm OAH. Cylindrical style addition funnel similar to CG-1716, but with PTFE stopcocks. For replacement stoppers see CG-3000.

ENCOMPASS_PREFERRED
30

Chemglass Life Sciences 500mL Addition Funnel, 29/42 Joint Size, 4mm PTFE Stpk, 445mm OAH
SDP

500mL Addition Funnel, 29/42 Joint Size, 4mm PTFE Stopcock, 445mm OAH. Cylindrical style addition funnel with a standard taper top outer joint and lower inner joint, both being the same size. With pressure equalizing arm and PTFE stopcock. For replacement stoppers see CG-3000.

ENCOMPASS_PREFERRED