Acquisitions Department

Microforms Format Guide

All microforms purchased should meet ANSI standards for the production, processing, and storage of film as an archival medium.  The chart below specifies present capabilities and preferences for the U of M Libraries.

	Microfilm	Microfiche	Ultrafiche***
Size	16 mm# 35 mm*	4 x 6"	3 1/8 x 4 7/8"
Reduction ratio       Average size       Oversize	12 - 14X on 35mm 16 - 20X on 35mm	20 - 48X 20 - 48X	55X 90X
Film type       Silver halide       Vesicular       Diazo	Yes* Yes Yes#	Yes* Yes Yes#	Yes* Yes No
Polarity **       Negative       Positive	Yes* Yes	Yes* Yes	No Yes*
Printers available	16mm Yes 35mm Yes	Yes	Yes [In most instances]

* = preferred     ** = continue titles in previously established polarity       *** = check before purchase
# = currently not purchased

Send questions/comments/suggestions to Foster Bunday

Acquisitions Department | The University of Memphis | University Libraries
126 Ned R. McWherter Library | Memphis, TN 38152-3250

Phone: (901) 678-2203 | Fax: (901) 678-8218