I.S. 131:1964

SCOPE
DEFINITIONS
PRESERVATIVE
TABLE 1 - COMPOSITION OF PRESERVATIVE
SAMPLING
INSOLUBLE MATTER WORKING SOLUTION
ANALYSES
CONDITION OF THE TIMBER BEFORE TREATMENT
TIMBER FORMING CHARGE
STACKING IN CYLINDER
TREATMENT SCHEDULE
SALT RETENTION
TIMBER SUBJECTED TO FABRICATION AFTER TREATMENT
RECORDS
CERTIFICATES
APPENDIX A - SAMPLING
APPENDIX B - INSOLUBLE MATTER
APPENDIX C - CONCENTRATION OF WORKING SOLUTION
APPENDIX D - DETERMINATION OF COPPER CONTENT
APPENDIX E - DETERMINATION OF DICHROMATE AND CHROMIC
             ACETATE (TYPE 1 PRESERVATIVE)
APPENDIX F - DETERMINATION OF DICHROMATE CONTENT (TYPES
             2 AND 3 PRESERVATIVE)
APPENDIX G - DETERMINATION OF ARSENIC CONTENT (TYPES 2
             AND 3 PRESERVATIVE)
APPENDIX H - SALT RETENTION

Applies to vacuum/pressure treatment, using copper/chrome or copper/chrome/arsenic solutions, of structural or joinery timber. Also specifies composition of the dry preservative and of the treating solution, treatment schedule, salt retention and gives analytical methods and recommendations for post-treatment drying.