007/12 Motion picture (/00 = m) |
Base of film (Variable Control Field - Physical Description Fixed Field) |
Character position definition and scope:
A one-character alphabetic code indicates the base of the film.
Safety base film is a comparatively nonflammable film base that meets ISO requirements for a safety base. On some film, the phrase safety film appears on the edge of motion pictures.
Nitrate film base is a highly flammable film base that does not meet the ISO requirements for safety base film.
A fill character ( | ) is used when no attempt has been made to code this position.
Record requirements for National-level and Minimal-level records: Optional.
Guidelines for applying content designators:
Codes: |
Descriptions: |
Safety base: |
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a |
Safety base, undetermined Safety base film whose type has not been identified. |
c |
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d |
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p |
Safety base, polyester A film base made of a synthetic resin (e.g., estar). |
r |
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t |
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Nitrate: |
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i |
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m |
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All other: |
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n |
Not applicable Item does not have a film base, e.g., paper film. |
u |
Unknown |
z |
Other A film base for which none of the other defined codes is appropriate. |
| |
No attempt to code |
Prior to the definition of this character position in 1985, base of film was coded in field 009 (Physical Description Fixed Field for Archival Collection) /04 (Film base).
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