Getter is a kind of absorbent. For example, it maintains for long time the high level of vacuum in a closed system which is evacuated physically and chemically, by adsorbing remaining gases and outgases without releasing them. And the getter which adsorbs a particular gas component through special processes can be manufactured.
Getter are used for products we meet daily such as lamps, TV sets, monitors, vacuum bottles, refrigerators and so on, to enhance their performance. As industries developed, the range of its application is being widened.