ISO 18928:2013

INTERNATIONAL ISO
STANDARD 18928
Third edition
2013-02-01
Imaging materials — Unprocessed
photographic films and papers —
Storage practices
Matériaux pour l’image — Films et papiers photographiques non
traités — Pratiques de stockage
Reference number
ISO 18928:2013(E)
©
ISO 2013

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ISO 18928:2013(E)

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ISO 18928:2013(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established 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.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 18928 was prepared by Technical Committee ISO/TC 42, Photography.
This third edition cancels and replaces the second edition (ISO 18928:2002), of which it constitutes a
minor revision with the following changes:
— Annex A has been removed.
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ISO 18928:2013(E)

Introduction
International Standards have been written specifying the recommended practices for the storage of
processed safety photographic film (ISO 18911), processed photographic reflection prints (ISO 18920),
processed photographic plates (ISO 18918), and the specifications for safety film (ISO 18906).
This International Standard is concerned with the storage of unprocessed photographic materials.
While many of the recommendations for unprocessed and processed storage are very similar, there
are some important differences. These include the very beneficial effects of low temperature and the
harmful effects of adverse storage and radiation.
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INTERNATIONAL STANDARD ISO 18928:2013(E)
Imaging materials — Unprocessed photographic films and
papers — Storage practices
1 Scope
This International Standard specifies recommended storage conditions for unprocessed photographic
materials. It is not applicable to processed films and prints.
This International Standard is applicable to black-and-white and colour photographic materials (negative
films, positive films, reversal films, positive papers, and X-ray films), as well as to safety films.
2 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
2.1
raw photographic material
photographic material that has not been exposed to actinic radiation and has not been processed
3 Storage conditions
3.1 General
The photographic properties of imaging materials change during ageing. These changes result from
high temperatures and high relative humidities and may also be influenced by plastics, papers, solvents,
lacquers, varnishes, gases (see 3.4), and extraneous radiation (see 3.5). Frequent temperature changes
may also have adverse effects.
Changes caused by unfavourable storage conditions may be much greater than those due to variations
in original manufacture. It is important to comply with the manufacturer’s recommended storage
conditions and, where given, to an expiration date.
Films and papers should be exposed and processed as soon as possible after the original package has
been opened. Opened packages should be resealed under recommended conditions for further storage.
...