UNE - Spanish national standards

Natural gas - Extended analysis - Gas-chromatographic method (ISO 6975:1997)

Available languages: English, Spanish

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Natural gas - Calculation of calorific values, density, relative density and Wobbe indices from composition (ISO 6976:2016)

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Natural gas - Determination of mercury - Part 1: Sampling of mercury by chemisorption on iodine (ISO 6978-1:2003 )

Available languages: English, Spanish

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Natural gas - Determination of mercury - Part 2: Sampling of mercury by amalgamation on gold/platinum alloy (ISO 6978-2:2003)

Available languages: English, Spanish

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Nuclear energy - Reference beta-particle radiation - Part 1: Methods of production (ISO 6980-1:2023) (Endorsed by Asociación Espanola de Normalización in November of 2025.)

Available languages: English

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Nuclear energy - Reference beta-particle radiation - Part 2: Calibration fundamentals related to basic quantities characterizing the radiation field (ISO 6980-2:2023, including corrected version 2024-03) (Endorsed by Asociación Espanola de Normalización in November of 2025.)

Available languages: English

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Nuclear energy - Reference beta-particle radiation - Part 3: Calibration of area and personal dosemeters and the determination of their response as a function of beta radiation energy and angle of incidence (ISO 6980-3:2023) (Endorsed by Asociación Espanola de Normalización in November of 2025.)

Available languages: English

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Pulps. Determination of alkali resistance

Available languages: Spanish, English

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Graphical symbols - Safety colours and safety signs - Registered safety signs (ISO 7010:2019, Corrected version 2020-06)

Available languages: English

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Aerospace series - Configuration - Definition and designation for product standards for externally threaded fasteners (Endorsed by Asociación Espanola de Normalización in June of 2020.)

Available languages: English

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