Name: SIST ISO 18928:2014 — Imaging materials - Unprocessed photographic films and papers - Storage practices
SKU: SIST ISO 18928:2014
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SIST ISO 18928:2014 PDF — Imaging materials - Unprocessed photographic films and papers - Stora… — GOST Standards

Scope and Applicability SIST ISO 18928:2014 applies exclusively to unprocessed photographic materials such as negative and positive films, reversal films, photographic papers, and X-ray films. It is not intended for processed films or photographic prints.
Storage Conditions Effective storage practices focus on maintaining optimal temperature and relative humidity (RH) to prevent premature ageing and damage:
- Temperature: Recommended temperatures depend on material type and storage duration. For exposures shorter than one month, up to 25 °C is acceptable. For longer storage, temperatures should be below 13 °C, with very long-term storage ideally at -18 °C to -20 °C.
- Relative Humidity: Photographic materials should be stored between 40% and 60% RH and protected from levels below 30% or above 65% to avoid brittleness, curling, fungal growth, and container degradation.
- Handling Temperature Acclimatization: Materials stored at low temperatures require a warm-up period before use to prevent condensation.
Protection Against Environmental Hazards
- Gases: Storage areas must avoid exposure to harmful gases such as hydrogen sulphide, sulfur dioxide, formaldehyde, and oxidizing compounds that can fog or desensitize materials.
- Radiation Exposure: Exposure to extraneous penetrating radiation, including X-rays and certain natural background radiation sources, must be minimized. Airport X-ray inspections can damage unprocessed films. Hand inspection is recommended to prevent fogging and loss of image quality.
Mechanical Storage Requirements Proper physical storage includes orienting rolls horizontally to avoid pressure damage and storing sheet materials vertically or horizontally depending on size and packaging status.
Handling Guidelines Handling should occur in controlled environments with 20 °C to 24 °C temperature and 40% to 65% RH. Use of lint-free cotton gloves, dust filters, and caution against static and physical damage such as kinking or fingerprinting is advised.

SIST ISO 18928:2014 PDF

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Related Standards

Технические детали

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