SIST ISO 554:1995

Standard atmospheres for conditioning and/or testing -- Specifications

Specifies three atmospheres approximated to the natural environmental conditions. However, it is desirable to use only one of these.

Atmosphères normales de conditionnement et/ou d'essai -- Spécifications

Standardne atmosfere za klimatizacijo in/ali preskušanje - Specifikacije

General Information

• Status: Published
• Publication Date: 31-Oct-1995
• Withdrawal Date: 13-Apr-2016
• ICS: 19.020 - Test conditions and procedures in general
• Technical Committee: I12 - Imaginarni 12 Imaginarni TC za ISO področje - vzdrževani privzeti ISO standardi
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Nov-1995
• Due Date: 01-Nov-1995
• Completion Date: 01-Nov-1995
• Ref Project: ISO 554:1976 - Standard atmospheres for conditioning and/or testing - Specifications

Overview

SIST ISO 554:1995 defines standard atmospheres for conditioning and/or testing, establishing controlled atmospheric conditions that approximate natural environments. Developed by ISO Technical Committee ISO/TC 125, this international standard specifies three different standard atmospheres that can be used during testing and conditioning processes to ensure consistency and comparability of test results across various climates. While multiple atmospheres are defined, the standard recommends selecting a single atmosphere appropriate to the specific application to simplify implementation.

The goal is to provide a reproducible and standardized approach for conditioning materials and conducting tests to simulate ambient environmental conditions under controlled settings. This supports better accuracy, reliability, and comparability in industrial and scientific testing.

Key Topics

• Standard Atmospheres Defined
  ISO 554 specifies three atmospheres characterized by different temperature and relative humidity levels, approximating typical natural environments:

  • Ordinary atmosphere with wider tolerances
  • Reduced tolerance atmospheres with stricter controls

• Conditions Specified
  The atmospheres include parameters of:

  • Temperature (°C)
  • Relative Humidity (%)
  • Atmospheric pressure approximations

• Tolerances
  The standard sets tolerance limits to maintain conditions within:

  • Ordinary wide tolerance range: ±2°C temperature, relative humidity 45-55% or 60-70%
  • Reduced tolerance range: ±1°C temperature, relative humidity 48-52% or 63-67%

• Application Flexibility
  Due to climatic diversity globally, the standard allows selecting one atmosphere best suited for the country or region of use.

Applications

SIST ISO 554:1995 is essential for industries and laboratories requiring standardized environmental conditioning and testing for products and materials. Key practical applications include:

• Material Testing
  Conditioning materials under standard atmospheres to assess performance, durability, and compliance.

• Quality Control
  Ensuring repeatability and comparability of product testing results by controlling environmental variables.

• Calibration and Validation
  Providing consistent atmospheric conditions for calibration of devices sensitive to temperature and humidity.

• Research and Development
  Establishing baseline environmental conditions when developing new materials or products.

The standard benefits sectors like manufacturing, electronics, textiles, aerospace, and laboratory testing facilities by harmonizing testing conditions relative to the natural environment.

Related Standards

ISO 554 relates to other international standards concerning environmental testing and conditioning environments:

• ISO 10012 – Measurement management systems requirements
• ISO 6892 – Metallic materials tensile testing under controlled conditions
• ISO 7243 – Measurement of heat stress using WBGT index in standard atmospheres
• ISO 12500 – Environmentally controlled enclosures for testing
• ISO/IEC 17025 – Testing and calibration laboratory competence

Adherence to ISO 554 combined with related standards enhances the accuracy, reliability, and international acceptance of conditioning and testing processes by utilizing internationally recognized atmospheric conditions.

---

By implementing SIST ISO 554:1995, organizations standardize environmental parameters during testing and conditioning, improving product consistency and facilitating global compliance in diverse climate zones. This standard is a foundational document for developing and maintaining quality testing infrastructures worldwide.

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-1995
Standardne atmosfere za klimatizacijo in/ali preskušanje - Specifikacije
Standard atmospheres for conditioning and/or testing -- Specifications
Atmosphères normales de conditionnement et/ou d'essai -- Spécifications
Ta slovenski standard je istoveten z: ISO 554:1976
ICS:
19.020 Preskuševalni pogoji in Test conditions and
postopki na splošno procedures in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL STANDARD
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXAYHAPOAHAJI OPTAHM3AI_IMR I-IO CTAHAAPTM3A~MM~ORGANISATlON INTERNATIONALE DE NORMALISATION
Standard atmospheres for conditioning and/or testing -
Specifications
Atmosph6res normales de conditionnement et/au d ’essai - Spkifications
First edition - 1976-07 -15
UDC 620.1 : 551.58 : 697.9
Ref. No. IS0 554-1976 (E)
Descriptors : standard atmospheres, controlled atmospheres, test atmospheres, tests, testing conditions,
Price based on 1 page
IS0 (the International Organization for Standardization) is a worldwide federation
of national standards institutes (IS0 Member Bodies). The work of developing
International Standards is carried out through IS0 Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the IS0 Council.
International Standard IS0 554 (originally ISO/DIS 3736) was drawn up by
Technical Committee ISO/TC 125, Enclosures and conditions for testing, and
circulated to the Member Bodies in March 1975.
It has been approved by the Mem
...

INTERNATIONAL STANDARD
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION l MEXAYHAPOAHAJI OPTAHM3AI_IMR I-IO CTAHAAPTM3A~MM~ORGANISATlON INTERNATIONALE DE NORMALISATION
Standard atmospheres for conditioning and/or testing -
Specifications
Atmosph6res normales de conditionnement et/au d ’essai - Spkifications
First edition - 1976-07 -15
UDC 620.1 : 551.58 : 697.9
Ref. No. IS0 554-1976 (E)
Descriptors : standard atmospheres, controlled atmospheres, test atmospheres, tests, testing conditions,
Price based on 1 page
IS0 (the International Organization for Standardization) is a worldwide federation
of national standards institutes (IS0 Member Bodies). The work of developing
International Standards is carried out through IS0 Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up has the right to be represented on that Committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies for approval before their acceptance as International
Standards by the IS0 Council.
International Standard IS0 554 (originally ISO/DIS 3736) was drawn up by
Technical Committee ISO/TC 125, Enclosures and conditions for testing, and
circulated to the Member Bodies in March 1975.
It has been approved by the Member Bodies of the following countries :
Australia Germany Thailand
Austria India Turkey
Belgium New Zealand United Kingdom
Czechoslovakia Romania U.S.A.
Finland South Africa, Rep. of U.S.S. R.
France Spain
of Ilowing countries expressed
The Member Bodies the fo disapproval of the
technical ,ounds :
document on
gr
Netherlands
Sweden
This International Standard cancels and replaces I
...

NORME I 5
INTERNATIONAL ORGANlZATlON FOR STANDARDIZATION .1/1t ik’;(yti.q!‘OjlJtfAR OPI-AtIPl3AUMR no C7At1:1Al’TM3AIIIlM *ORGANISATION !NTERNATIONALE DE NORMALISATION
Atmosphères normales de conditionnement et/ou d’essai -
Spécifications
Standard a tmospheres for conditioning and/or testing - Specifica tions
Première édition - 1976-07 -15
CDU 620.1 : 551.58 : 697.9 Réf. no : ISO 554-1976 (F)
cn
c : atmosphère normalisée, atmosphère contrôlée, atmosphère d’essai, essai, conditions d’essai.
Descripteurs
Prix basé sur 1 page
AVANT-PROPOS
LYS0 (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres KO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a ie droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
La Norme Internationale ISO 554 (précédemment ISO/DIS 3736) a été établie par
le Comité Technique ISO/TC 125, Enceintes et conditions d’essai, et soumise aux
Comités Membres en mars 1975.
Elle a été approuvée par les Comités Membres des pays suivants :
Afrique du Sud, Rép. d’ Finlande Tchécoslovaquie
Allemagne France Thaïlande
Australie Inde Turquie
Autriche Nouvelle-Zélande U.R.S.S.
Belgique Roumanie U.S.A.
Espagne Royaume-Uni
Les CO mités Memb res des pays suivants ont désapprouvé le document pour des
raisons techni ques :
Pays- Bas
Suède
Cette Norme Internationale annu
...

NORME I 5
INTERNATIONAL ORGANlZATlON FOR STANDARDIZATION .1/1t ik’;(yti.q!‘OjlJtfAR OPI-AtIPl3AUMR no C7At1:1Al’TM3AIIIlM *ORGANISATION !NTERNATIONALE DE NORMALISATION
Atmosphères normales de conditionnement et/ou d’essai -
Spécifications
Standard a tmospheres for conditioning and/or testing - Specifica tions
Première édition - 1976-07 -15
CDU 620.1 : 551.58 : 697.9 Réf. no : ISO 554-1976 (F)
cn
c : atmosphère normalisée, atmosphère contrôlée, atmosphère d’essai, essai, conditions d’essai.
Descripteurs
Prix basé sur 1 page
AVANT-PROPOS
LYS0 (Organisation Internationale de Normalisation) est une fédération mondiale
d’organismes nationaux de normalisation (Comités Membres KO). L’élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a ie droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec I’ISO, participent également aux travaux.
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I’ISO.
La Norme Internationale ISO 554 (précédemment ISO/DIS 3736) a été établie par
le Comité Technique ISO/TC 125, Enceintes et conditions d’essai, et soumise aux
Comités Membres en mars 1975.
Elle a été approuvée par les Comités Membres des pays suivants :
Afrique du Sud, Rép. d’ Finlande Tchécoslovaquie
Allemagne France Thaïlande
Australie Inde Turquie
Autriche Nouvelle-Zélande U.R.S.S.
Belgique Roumanie U.S.A.
Espagne Royaume-Uni
Les CO mités Memb res des pays suivants ont désapprouvé le document pour des
raisons techni ques :
Pays- Bas
Suède
Cette Norme Internationale annu
...