These dropping cylinders are ideal for the measured addition of solutions, reagents and/or chemicals to a reaction mixture. The double graduated scale shows the approximate volume of liquid contained in the funnel or the volume dispensed from the funnel. Pressure-equalising dropping funnels have an additional narrow-bore glass tube from the bulb of the funnel, to the ground glass joint around the stem. These replace the liquid volume lost in the bulb with the equivalent gas volume from the flask into which the reagent is flowing, and are useful when handling air-sensitive reagents in a sealed, inert-gas environment. Without this tube, or some other means to equalize the pressure between a sealed receiving flask and the bulb of the funnel, the flow of fluid from the bulb will stop.

ProductsCone NS 14/23

Catalog No	Capacity (mL)	Height h (mm)	Socket Size	Graduation Intervals (mL)	Quantity
241252009	50	240	19/26	1	1
241252506	100	270	19/26	2	1

 

Cone NS 19/26

Catalog No	Capacity (mL)	Height h (mm)	Socket Size	Graduation Intervals (mL)	Quantity
241252403	100	270	19/26	2	1

 

Cone NS 24/29

 

Catalog No	Capacity (mL)	Height h (mm)	Socket Size	Graduation Intervals (mL)	Remarks	Quantity
241253605	250	350	29/32	5	Special size , non-DIN size	1
241254404	500	430	29/32	10	Special size , non-DIN size	1

 

Cone NS 29/32

Catalog No	Capacity (mL)	Height h (mm)	Socket Size	Graduation Intervals (mL)	Quantity
241253708	250	380	29/32	5	1
241254601	500	430	29/32	10	1