| http://www.w3.org/ns/prov#value | - Briefly, the preferred embodiment of the present invention utilizes a getter purifier operated at less than 350??? C., (preferably less than 300??? C. and most preferably at about 280??? C.) to remove impurities such as carbon dioxide, carbon monoxide, nitrogen, oxygen, water, and methane to levels of the order of one ppb or less from hydrogen.
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