Indoor Stainless Steel Kitchen Cabinets home stainless steel kitchen Guangdong Planet Cabinetry Co., Ltd. , https://www.cnplanetcabinetry.comThe purification matrix of the Valco helium (HP) purifier is a non-volatile adsorptive alloy. There is an oxide film on the surface of the adsorbent particles that needs to be activated by heating. The activation process must be completed in a vacuum or inert gas environment, which allows Helium gas diffuses freely therebetween to prevent the formation of an oxygen purification layer, and can also adsorb impurity gases. HP's adsorbent material has good thermal stability, including two temperature control ranges.