Vacuum degassing services remove detrimental elements such as hydrogen, nitrogen and oxygen, which may be harmful to the integrity of the metal. Hydrogen is one of the more common interstitial impurities which requires degassing. Vacuum degassing can be used for very small impurity levels (<100 ppm) to very high hydrogen levels. Post degas treatments typically result in <10 ppm of contaminant. In addition to hydrogen impurities, nitrogen, moisture, sulfur and oxide impurities can also be removed through specific degassing processes too.