Give the film base following the dimension.

nitrate

acetate  [Use if more specific type is undetermined]

diacetate

triacetate

polyester

safety  [Use if more specific type is undetermined]

300 ## $a 1 film reel of 1 (10 min., ca. 900 ft.) : $b sd., col. ; $c 35 mm. $3 triacetate dupe neg.

300 ## $a 10 film reels of 10 (ca. 105 min., 9,431 ft.) : $b si., b&w ; $c 35 mm. $3 nitrate pos pic.

Other film bases may be given as needed (e.g., acetate propionate).

Mixed film bases may be given in a single line of physical description.

300 ## $a 1 film reel of 1 (ca. 10 min., 875 ft.) : $b si., b&w ; $c 35 mm. $3 acetate and nitrate neg.

Do not give the film base if it is standard for the archive.

See also:

5.  Physical Description Area