ISO 18912:2002建立了聚酯基安全膜稳定性的规范，该安全膜具有由氮气泡形成的热处理泡状摄影图像。本标准仅适用于拟用作LE-10和LE-100存储副本的泡状照相胶片，其应按照ISO 18902和ISO 18911进行存储。 ISO 18912:2002适用于照相胶片，其中图像层是附着在透明支架上的离散层，它适用于卷式胶片和片式胶片。 ISO 18912:2002不适用于拟用作工作副本的囊泡胶片记录。

ISO 18912:2002 establishes specifications for the stability of polyester-base safety film which has a heat-processed vesicular photographic image formed by nitrogen bubbles. It is applicable only to vesicular photographic film intended and used as LE-10 and LE-100 storage copies, which shall be stored in accordance with ISO 18902 and ISO 18911. ISO 18912:2002 is applicable to photographic film in which the image layer is a discrete layer attached to a transparent support, and it applies to roll film and sheet film. ISO 18912:2002 is not applicable to vesicular film records intended and used as work copies.