Shown to reduce Total Package Oxygen in beer bottle from 70 ppm to 30 ppm, Gambrinus helps maximize shelf life while optimizing quality and flavor consistency. Stainless steel in-line heater injects very small and precise amount of filtered water into each beer bottle to induce correct foam characteristics and displace oxygen. Constructed using ASME-certified pressure vessel, Gambrinus employs patented sanitary fitting between heating element cap and housing to inhibit bacteria growth.