MASS DEACIDIFICATION

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MASS DEACIDIFICATION
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DAMAGE SURVEY

• CARRIED OUT IN 1991
• 1.5 OF THE COLLECTIONS BRITTLE
• 6.3 OF THE COLLECTIONS IN WEAK CONDITION

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(No Transcript)
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MASS-DEACIDIFICATION
SELECTION CRITERIA

• ONLY MATERIALS FROM THE 19TH CENTURY
• INFORMATION ALSO AVAILABLE ON MICROFILM
• PREPARATION FOR TREATMENT IN THE ARCHIVE
• ALL TREATMENTRUNS EVALUATED

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THE PRACTICE

• DEZ
• 1993 RESULTS ACCEPTED
• TREATMENT STOPPED EARLY 1994
• BATTELLE
• 1995-1996 RESULTS NOT ACCEPTED AT THAT MOMENT
• BOOKKEEPER
• 1997 RESULTS ACCEPTED
• TREATMENT STARTED JANUARI 1998

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DEZ RESULTS

• PH VALUE AFTER TREATMENT
• 7.0 TO 7.8
• ALKALINE RESERVE 1.8 TO 2.5
• HOMOGENIOUS DISTRIBUTION
• INITIAL LOS OF STRENGTH IN
• SOME CASES
• DUE TO TRANSPORT, VERY
• EXPENSIVE

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DEZ PROCES

• 1992 TESTSHIPMENT TO HOUSTON
• 1993 THREE RUNS OF ORIGINALS
• ARCHIVES TREATED
• 1993 SEVEN BOXES OF MATERIALS
• CHEMICALLY BURNED
• 1994 LAST TREATMENT
• 1994 AKZO TERMINATED THE DEZ
• PROCES

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BATTELLE PROCESS

• 1995. EVALUATION. THE ROYAL LIBRARY
• 1995-1996. EVALUATION. TNO INSTITUTE FOR PAPER
  AND BOARD AND THE NATIONAL ARCHIVES

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EVALUATION RESULTS

• HOMOGENIOUS
• DEACIDIFICATION
• SUFFICIENT ALKALINE RESERVE
• GOOD PROTECTION AGAINST
• AIR- POLLUTANTS

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EVALUATION RESULTS

• INITIAL LOS OF STRENGTH
• PRINTING INKS AFFECTED
• NO TRACE OF
• PAPERSTRENGTHENING
• RESIDUE OF SILICONOIL

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BOOKKEEPER PROCESS

• 1994 EVALUATION LIBRARY OF CONGRESS
• 1995 EVALUATION BY THE ROYAL LIBRARY
• 1996 EVALUATION BY TNO AND THE NATIONAL
  ARCHIVES
• 1998 OPERATIONAL IN THE NETHERLANDS

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EVALUATION RESULTS

• pH AFTER TREATMENT 7.6 TO 10
• ALKALINE RESERVE 1.5 TO 2
• HOMOGENIOUS TREATMENT
• FOR UNBOUND MATERIALS
• CONCLUSIONS COMAPABLE
• WITH OTHER EVALUATIONS

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EVALUATION RESULTS

• HOMOGENIOUS TREATMENT OF
• BOOKS SOMETIMES A PROBLEM
• DAMAGE TO BINDINGS IN SOME
• CASES
• IN SOME CASES INITIAL LOSS OF
• STRENGTH

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ANALYSES

• Ph-value of the cold extract
• conductivity and TOC values
• alkaline reserve
• copper number
• weigth
• moisture content
• folding endurance

• Tear resistence
• tensile strenght
• yellowing of the paper
• microscopic research (SEM/EDXA)
• research on the morphological structure

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BOOKKEEPER, THE FACILITY
Photografy dr.J.B.G.A.Havermans, TNO
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TREATMENT REPORT
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ARCHIVE ASSESSMENT

• DEVELOPED INSTRUMENTS
• DAMAGE ASSESSMENT MANUAL
• SAMPLING PROTOCOL
• CLASSIFICATION MODEL
• DAMAGE FORM

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ARCHIVE ASSESSMENT

• RESULTS OVER 175 KILOMETERS
• 8000 LINEAR METER ARCHIVE
• NO ACCES DUE TO CONDITION

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COLLECTION POLICY PLAN
PLANNING LIST / PRIORITIES A. High frequency of
use B. Vulnerable collections C. Objects with
high intrinsic/historical value D. Objects for
exhibition purposes
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COLLECTION POLICY PLAN
SELECTION CRITERIA 1. Frequency of use 2. Special
programs for the public 3. Physical condition 4.
Value ofthe information 5. Intrinsic/historical
value