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BS ISO/TR 12031:2000

Current
Current

The latest, up-to-date edition.

Micrographics. Inspection of silver-gelatin microforms for evidence of deterioration
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

09-15-2000

Foreword
Introduction
1 Scope
2 References
3 Terms and definitions
4 Inspection conditions
5 Equipment and supplies
      5.1 General
      5.2 Light box and film rewinds for 16 mm and 35 mm
             film
      5.3 Eye loupe (eye glass)
      5.4 Microscope
      5.5 Specular light source
      5.6 Black velvet
      5.7 Inspection gloves
6 Sampling method
      6.1 General
      6.2 Division into survey groups
7 Inspection procedure
      7.1 General
      7.2 Procedure for all microfilms
      7.3 Checks for all microfilms
      7.4 Additional checks for roll film
      7.5 Additional checks for jackets
      7.6 Additional checks for aperture cards
8 Inspection reporting
      8.1 Classification
      8.2 Data collection, general
      8.3 History and description of group or collection
      8.4 Individual microfilm inspection report
      8.5 Data analysis (optional)
9 Types of defects
      9.1 General
      9.2 Microbiological growths
      9.3 Redox blemishes
      9.4 Residual processing chemicals
      9.5 Emulsion adhesion
      9.6 Separation of the emulsion from the film base
      9.7 Brittleness
      9.8 Base shrinkage
10 Remedial action
      10.1 General
      10.2 Subsequent re-inspections
Annex A - Determination of base type
Annex B - Factors affecting deterioration
      B.1 - General
      B.2 - Inappropriate choice of film material
      B.3 - Processing
            B.3.1 - Improper fixing
            B.3.2 - Improper washing
            B.3.3 - Insufficient drying
      B.4 - Improper climatic conditions during storage
Annex C - Examples of types of defects
      C.1 - Microbiological growths
      C.2 - Redox blemishes
            C.2.1 - Exposed leader
            C.2.2 - Silver sheen
      C.3 - Separation of the emulsion from the film base

Applicable to all kinds of silver-gelatin microfilm, in roll, aperture card, jacket or microfiche format. Covers the equipment and methods required for identification and monitoring of deterioration. Acts to identify the extent and nature of the problem and will eventually give a sound basis for any remedial action necessary.

This Technical Report applies to all forms of silver-gelatin microfilm, whether in roll, aperture card, jacket or microfiche format. It describes the equipment and procedures necessary to identify and monitor deterioration. This information serves to identify the extent and nature of the problem and will ultimately provide a sound basis for any remedial action that may be required.

Committee
IDT/1
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Current

Standards Relationship
ISO/TR 12031:2000 Identical

BS 6660-1:2005 Guide to setting up and maintaining micrographics and digital imaging units Micrographics

ISO 2859-3:2005 Sampling procedures for inspection by attributes — Part 3: Skip-lot sampling procedures
ISO 417:1993 Photography — Determination of residual thiosulfate and other related chemicals in processed photographic materials — Methods using iodine-amylose, methylene blue and silver sulfide
ISO 5466:1996 Photography — Processed safety photographic films — Storage practices
ISO 10602:1995 Photography — Processed silver-gelatin type black-and-white film — Specifications for stability
ISO 2859-2:1985 Sampling procedures for inspection by attributes — Part 2: Sampling plans indexed by limiting quality (LQ) for isolated lot inspection
ISO 2859-0:1995 Sampling procedures for inspection by attributes — Part 0: Introduction to the ISO 2859 attribute sampling system
ISO 543:1990 Photography Photographic films Specifications for safety film
ISO 6196-1:1993 Micrographics Vocabulary Part 1: General terms

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