Laboy Glass Double Maniflod Vacuum Gas Distributor for Schlenk Line with 4-Port Hollow Glass Stopcock & 35/20 Spherical Joint at Left Side 350mm in Length Air-Free Chemistry Lab Glassware

Vacuum/gas manifold is the key component of the schlenk line which is a commonly chemistry apparatus used to manipulate moisture-and air-sensitive compounds with vacuum and inert gas. The double or dual manifold is designed with two banks .The two banks are used as a inert gas line and a vacuum line.The inert gas line is attached to an inert gas supply and to the gas outlet by flexible rubber or plastic tubing.The inert gas is usually led to the manifold directly or pass through a drying tube first.and exists from the manifold through a mercury or mineral oil bubbler.The vacuum line is usually closed at one end and attached a vacuum pump at the other.In between the manifold and the pump there should be a cold trap to prevent the solvent vapors from contaminating the vacuum pump. There are multiple ports with hollow stopcocks allowing vacuum or inert gas to be selected without the need for placing the reaction vessels on a separate line. For example, gases can be vacuum transferred from one reaction flask to another or several reactions may be run at the same time This double vacuum gas manifold is designed with 4mm double oblique,high vacuum hollow glass stopcocks precision ground with corresponding numbers on barrel and plug.Lower vacuum chambers on stopcock are evacuated with a separate hole in the plug in order to hold the plug in the stopcock barrels With 35/20 ball joints instead of the serrated hose connection at the ends of inert gas manifold bank and vacuum manifold bank.