Cold Activated Oxygen Barrier Bottle Caps (Case of 10,000 Caps)

Similar to the thermochromatic cans and labels found on commercial be, these caps will turn blue when the beer is cold. They are light a gray when warm (see pictures). They also have a plastic liner containing an oxygen absorbing agent, that absorbs oxygen from the head space. These caps are necessary for long term storage of beer (over one year). Case contains 10,000 bottle caps, enough to bottle almost 200 gallons of beer!