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EN ISO 17507-1:2025

Natural gas - Calculation of methane number of gaseous fuels for reciprocating internal combustion engines - Part 1: MNc method (ISO 17507-1:2025)

Publication date:   Feb 17, 2026

General information

60.60   Standard published   Dec 17, 2025

CEN

CEN/TC 408 Natural gas and biomethane for use in transport and biomethane for injection in the natural gas grid

European Norm

75.060   Natural gas

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Scope

This document specifies the MNC method for the calculation of the methane number of a gaseous fuel, using the composition of the gas as sole input for the calculation.
This document applies to natural gas (and biomethane) and their admixtures with hydrogen.

Life cycle

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PUBLISHED
EN ISO 17507-1:2025
60.60 Standard published
Dec 17, 2025