Editing Laboratory glassware (section)

===Controlling fluid flow===
When using glassware it is often necessary to control the flow of fluid.  It is commonly stopped with a [[Bung|stopper]]. Fluid may be transported between connected pieces of glassware.  Types of interconnecting components include [[glass tubing]],  T-connectors, Y-connectors, and glass adapters.  For a leak-tight connection a [[ground glass joint]] is used (possibly reinforced using a clamping method such as a [[Keck clips]]).  Another way to connect glassware is with a [[hose barb]] and flexible [[Tube (fluid conveyance)|tubing]]. Fluid flow can be switched selectively using a [[valve]], of which a [[stopcock]] is a common type fused to the glassware. Valves made entirely of glass may be used to restrict [[fluid]] flows. Fluid, or any material which flows, can be directed into a narrow opening using a [[Funnels (laboratory)|funnel]].

{{Gallery
|title=Controlling fluid flow with specific glassware
|width=160 | height=170
|align=center
|footer= 
|File:All Glass Check Valve.jpg
 |alt1=An all-glass check valve.
 |An all-glass check valve.
|File:Erlenmeyer and Filtering Flask.jpg
 |alt2=An Erlenmeyer and a filtering flask.
 |An Erlenmeyer and a filtering flask. Note the barbed sidearm on the filtering flask.
|File:Glass adapter with barbed end and ground glass fitting.jpg
 |alt3=A glass adapter. 
 |A glass adapter with a hose barb on the left and a ground glass connector on the right.
|File:Glindemann PTFE Sealing Ring for Taper Joint Glassware.JPG
 |alt4=A taper joint stopper with PTFE sealing ring.
 |A taper joint stopper with [[PTFE]] sealing ring. Note the optical transparency of the narrow sealing ring pressured by glass joint on the right.
|File:T bore plug.JPG
 |alt5=A thread T-bore plug valve
 |A thread T-bore plug valve used as a side arm on a [[Schlenk flask]].
|File:Sidearm stockcock.JPG
 |alt6=A common straight bore glass stopcock attached with a plastic plug retainer 
 |A common straight bore glass [[stopcock]] attached with a plastic plug retainer in the side arm of a [[Schlenk flask]].
}}