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PCE
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CPC Subgroup Additional Only
F25J 2215/42

Nitrogen or special cases, e.g. multiple or low purity N2

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Processes characterised by the type or other details of the product stream > Nitrogen or special cases, e.g. multiple or low purity N2

1 direct subcode

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  • F25J 2215/44 Ultra high purity nitrogen, i.e. generally less than 1 ppb impurities