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Overview - EN ISO 15971:2014 / ISO 15971:2008 EN ISO 15971:2014 (identical to ISO 15971:2008) provides guidance for measuring the calorific value and Wobbe index of natural gas and natural‑gas substi…
Overview ISO 15971:2008 - Natural gas - Measurement of properties - Calorific value and Wobbe index - specifies principles and practical guidance for measuring the calorific value and Wobbe index of…