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Draft standard

DIN ISO 13964/A1:2025-06 - Draft

Air quality - Determination of ozone in ambient air - Ultraviolet photometric method - AMENDMENT 1: Consensus value for the ozone absorption cross-section at room temperature at the mercury-line wavelength (253,65 nm air) (ISO 13964:1998/Amd.1:2024); Text in German and English

German title
Luftbeschaffenheit - Bestimmung von Ozon in der Außenluft - UV-photometrisches Verfahren - ÄNDERUNG 1: Konsenswert für den Absorptionsquerschnitt von Ozon bei Raumtemperatur bei der Quecksilberlinien-Wellenlänge (253,65 nm Luft) (ISO 13964:1998/Amd.1:2024); Text Deutsch und Englisch
Date of issue
2025-04-25
Publication date
2025-06
Original language
German, English
Pages
10

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Date of issue
2025-04-25
Publication date
2025-06
Original language
German, English
Pages
10
DOI
https://dx.doi.org/10.31030/3613087

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Short description
Noting that the major national measurement and standards bodies around the world have recommended that the new value for the absorption cross-section of ozone at room temperature at the mercury-line wavelength (253,65nm, air) (CCQM.O3.2019) be adopted into the methods and standards for measuring ozone in air it was decided to amend ISO 13964:1998 in order - to incorporate the change in the ozone absorption cross section value at 253.65 nm (air), (CCQM.O3.2019), - to correct the typographical errors in the reference pressure value in ISO 13964, - to harmonize the use of significant figures used in temperature and pressure values in the two methods, - to limit the amendments to changing only the ozone absorption cross-section value, the correction of the typographical errors in the reference pressure value, and the harmonization of temperature and pressure values.
Content
ICS
13.040.20
DOI
https://dx.doi.org/10.31030/3613087

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