the present invention is a bubbler having a diptube inlet ending in a bubble size reducing outlet and at least one baffle disc positioned between the outlet of the diptube and the outlet of the bubbler to provide a narrow annular space between the baffle disc and the wall of the bubbler to prevent liquid droplets from entering the outlet to the bubbler . the bubble size reducing outlet is an elongated cylindrical porous metal frit situated in a sump of approximately the same dimensions . a metal frit is placed at the inlet of the outlet of the bubbler . the present invention is also a process of delivering a chemical precursor from a bubbler vessel having the above structure .