Patent ID: 8235364

Claim:
A vapor phase reagent dispensing apparatus comprising: a vessel which comprises a vessel top wall member, a vessel side wall member and a vessel bottom wall member configured to form an internal vessel compartment to hold a source chemical up to a fill level and to additionally define an inner gas volume above the fill level; said vessel top wall member having a single port capable of receiving a carrier gas and dispensing a vapor phase reagent; said single port having a branched configuration comprising a first port portion extending generally vertically and exteriorly from said top wall member, a second port portion extending generally horizontally and exteriorly from said first port portion, and a third port portion extending generally vertically and exteriorly from said second port portion; said first port portion having a port top wall member and a port side wall member, said port top wall member having an opening through which a bubbler extends; said bubbler comprising a tube that extends through a centrally located portion of said first port portion and through said inner gas volume into the source chemical and through which a carrier gas can be bubbled into the source chemical to cause at least a portion of source chemical vapor to become entrained in said carrier gas to produce a flow of vapor phase reagent to said inner gas volume above the fill level, said tube having an inlet end located generally vertically and exteriorly from said first port portion and an outlet end located generally adjacent to the vessel bottom wall member; and said first port portion having interstitial space between said tube and said port side wall member through which said vapor phase reagent can be dispensed from the inner gas volume of said vessel.