36 CFR 1238.26: What are the restrictions on use for permanent and unscheduled microform records?

(a) Agencies must not use the silver gelatin master microform or duplicate silver gelatin microform of permanent or unscheduled records created in accordance with § 1238.14 of this part for reference purposes. Agencies must ensure that the master microform remains clean and undamaged during the process of making a duplicating master.

(b) Agencies must use duplicates for:

(1) Reference;

(2) Further duplication on a recurring basis;

(3) Large-scale duplication; and

(4) Distribution of records on microform.

(c) Agencies retaining the original record in accordance with an approved records disposition schedule may apply agency standards for the use of microform records.