DISSOLVED OXYGEN REDUCING APPARATUS.

摘要

A dissolved oxygen reducing apparatus capable of supplying a liquid having an extremely small amount of dissolved oxygen. This dissolved oxygen reducing apparatus consists of a bubbling tank (24) having a liquid introduction port (21), a liquid discharge port (22) and an inert gas discharge port (23), an inert gas ejection nozzle (25) provided in the bubbling tank (24), and a liquid discharge pipe (26) joined to the liquid discharge port (22), an oxygen transmission coefficient of the bubbling tank (24) ad liquid discharge pipe (26) at 25 DEG C being not higher than 10<-><9> cc.cm/cm<2>.sec.atm.