Standard
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AS/NZS 1604.3:2021
[Current]Preservative-treated wood-based products, Part 3: Test methods
Specifies requirements for testing and analysing preservatives and preservative-treated wood-based products. Includes penetration spot tests, retention tests and solution analysis. Keywords: Wood-based product; Preservative treatment; Testing wood-based products
Published: 16/04/2021
Pages: 96
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.3 Normative references
1.4 Terms and definitions
1.5 Report of test results
1.5.1 Analysis of preservative-treated wood-based products
1.5.2 Analysis of preservatives
1.6 Other methods of analysis
1.7 Sampling preservative liquid — Requirements
1.8 Sampling preservative-treated wood-based products
1.9 Presence of sapwood and heartwood in some softwoods
1.9.1 Principle
1.9.2 Reagents
1.9.3 Procedure
1.10 Presence of sapwood and heartwood in some hardwoods
1.10.1 Principle
1.10.2 Reagent — 0.1 % methyl orange
1.10.3 Procedure
2 Solution analysis
2.1 Scope and general requirements
2.1.1 Scope of section
2.1.2 Preparation of preservative liquids and solutions for analysis
2.1.2.1 Oil-borne preservatives
2.1.2.2 Waterborne preservatives
2.1.2.3 Creosote
2.1.2.4 Light organic solvent preservative (LOSP)
2.1.3 Related methods of analysis
2.2 Determination of copper, chromium and arsenic in CCA preservative solutions
2.2.1 Principle
2.2.2 Reagents
2.2.3 Procedure
2.2.3.1 Instrument settings and operation
2.2.3.2 Preparation of calibration solutions
2.2.3.3 Analysis of preservative solutions
2.2.4 Calculations of the percentage of metals
2.2.4.1 Hexavalent chromium
2.2.4.2 Copper or arsenic
2.3 Determination of boron in preservative solution
2.3.1 Principle
2.3.2 Reagents
2.3.3 Procedure
2.3.4 Calculation
2.4 Determination of quaternary ammonium compounds in solutions
2.4.1 General
2.4.2 Reagents
2.4.3 Standardization of sodium tetraphenylboron solution
2.4.4 Analysis procedure
2.4.5 Calculations
2.5 Determination of copper in copper-based preservative solutions
2.5.1 Principle
2.5.2 Reagents
2.5.3 Procedure
2.5.3.1 Instrument settings and operation
2.5.3.2 Preparation of calibration solutions
2.5.3.3 Analysis of preservative solution
2.5.4 Calculation
2.6 Determination of bifenthrin in water-based solutions by gas chromatography (GC)
2.6.1 Principle
2.6.2 Reagents
2.6.3 Procedures
2.6.3.1 Instrument settings and operating conditions
2.6.3.2 Solution preparation
2.6.4 Calculations
2.7 Determination of propiconazole, tebuconazole and permethrin in preservative solutions
2.7.1 Principle
2.7.2 Reagents
2.7.3 Procedures
2.7.3.1 HPLC equipment and conditions
2.7.3.2 Sample preparation
2.7.4 Calculation
2.7.5 Suitability and specificity
2.8 Determination of imidacloprid in preservative solutions
2.8.1 Principle
2.8.2 Reagents
2.8.3 Procedures
2.8.3.1 Sample preparation
2.8.3.2 Preparation of working standard solution
2.8.3.3 Chromatography
2.8.4 Calculations
2.8.4.1 Relative response factor
2.8.4.2 Percentage mass per volume (m/v) of imidacloprid
2.9 Determination of triadimefon and cyproconazole in aqueous solutions
2.9.1 Principle
2.9.2 Reagents
2.9.3 Procedures
2.9.3.1 Sample preparation
2.9.3.2 Preparation of working standard solution
2.9.3.3 Gas chromatography using flame ionization detection
2.9.4 Calculations
2.10 Determination of copper in copper naphthenate solution
2.10.1 Principle
2.10.2 Reagents
2.10.3 Procedure
2.10.3.1 Sample preparation
2.10.4 Calculation
2.11 Determination of water content in high-temperature creosote
2.11.1 Principle
2.11.2 Apparatus
2.11.3 Reagent — Dry carrier liquid
2.11.4 Procedure
2.11.5 Calculation
2.11.6 Report
2.12 Determination of matter insoluble in toluene for high-temperature creosote
2.12.1 Principle
2.12.2 Reagents
2.12.3 Apparatus
2.12.4 Procedure
2.12.5 Calculations
2.12.6 Report
2.13 Determination of relative density of high-temperature creosote by hydrometer
2.13.1 General
2.13.2 Apparatus
2.13.3 Procedure
2.13.4 Calculation
2.13.5 Report
2.14 Determination of relative density of high-temperature creosote by density pycnometer
2.14.1 Apparatus
2.14.2 Calibration of pycnometers
2.14.3 Procedure
2.14.4 Calculation
2.14.5 Report
2.15 Test of distillation for high-temperature creosote
2.15.1 Principle
2.15.2 Apparatus
2.15.3 Preparation of laboratory sample
2.15.4 Dehydration of sample
2.15.5 Apparatus assembly
2.15.6 Procedure
2.15.7 Calculations
2.15.8 Report
2.16 Determination of coke residue in high-temperature creosote
2.16.1 Principle
2.16.2 Apparatus
2.16.3 Procedure
2.16.4 Calculation
2.16.5 Report
2.17 Determination of phenols (tar acids) in high-temperature creosote
2.17.1 Principle
2.17.2 Apparatus
2.17.3 Reagents
2.17.4 Procedure
2.17.5 Report
2.18 Determination of closed flashpoint of high-temperature creosote (closed cup)
2.18.1 Principle
2.18.2 Apparatus
2.18.3 Procedure
2.18.3.1 Drying of oil
2.18.3.2 Determination of flashpoint
2.18.4 Report
2.19 Determination of limpid point of high-temperature creosote
2.19.1 Principle
2.19.2 Apparatus
2.19.3 Preparation of samples
2.19.4 Procedure
2.19.5 Report
3 Penetration spot tests
3.1 Scope and general requirements of section
3.1.1 Scope of section
3.1.2 Preparation of test pieces from test specimens
3.1.3 Assessment of penetration
3.2 Determination of copper penetration in wood-based products treated with copper-based preservatives
3.2.1 Method 1 — Rubeanic acid
3.2.1.1 General
3.2.1.2 Principle
3.2.1.3 Reagents
3.2.1.4 Procedure
3.2.2 Method 2 — Chromazurol S
3.2.2.1 General
3.2.2.2 Principle
3.2.2.3 Reagent — Stock solution
3.2.2.4 Procedure
3.2.3 Method 3 — PAN indicator
3.2.3.1 General
3.2.3.2 Principle
3.2.3.3 Reagent — Stock solution
3.2.3.4 Procedure
3.3 Determination of boron penetration in wood-based products treated with boron-based preservatives
3.3.1 Method 1 — Turmeric acid
3.3.1.1 General
3.3.1.2 Principle
3.3.1.3 Reagents
3.3.1.4 Procedure
3.3.2 Method 2 — Pyrocatechol violet
3.3.2.1 General
3.3.2.2 Principle
3.3.2.3 Reagents
3.3.2.4 Procedure
3.4 Determination of zinc penetration in wood-based products treated with zinc-containing preservatives
3.4.1 General
3.4.2 Method 1 — Dithizone
3.4.2.1 Principle
3.4.2.2 Reagent — Dithizone indicator
3.4.2.3 Procedure
3.4.3 Method 2 — PAN indicator
3.4.3.1 General
3.4.3.2 Principle
3.4.3.3 Reagent — PAN indicator
3.4.3.4 Procedure
3.5 Determination of cobalt penetration in wood-based products treated with cobalt-containing preservatives
3.5.1 General
3.5.2 Principle
3.5.3 Reagent — PAN indicator
3.5.3.1 Procedure
4 Retention tests
4.1 Scope and general requirements of section
4.1.1 Scope of section
4.1.2 Preparation of test pieces from test specimen
4.1.3 Related methods of analysis
4.2 Determination of copper, chromium and arsenic in preservative-treated wood-based products
4.2.1 Principle
4.2.2 Reagents
4.2.3 Procedure
4.2.3.1 Instrument settings and operation
4.2.3.2 Preparation of calibration solutions
4.2.3.3 Analysis of treated timber
4.2.4 Calculation of the percentages of metals in treated wood-based products
4.2.5 Composition of copper chromium arsenic (CCA)
4.3 Determination of boron in preservative-treated wood-based products
4.3.1 Principle
4.3.2 Reagents
4.3.3 Procedure for analysis of treated wood-based product
4.3.4 Calculation
4.4 Determination of copper in preservative-treated wood-based products treated with copper preservatives
4.4.1 Principle
4.4.2 Reagents
4.4.3 Procedure
4.4.3.1 Instrument settings and operation
4.4.3.2 Preparation of a blank
4.4.3.3 Preparation of calibration solutions
4.4.3.4 Analysis of treated timber
4.4.4 Calculation
4.5 Determination of tebuconazole and/or propiconazole in preservative-treated wood-based products by gas chromatography (GC)
4.5.1 Principle
4.5.2 Reagents
4.5.3 Sampling
4.5.4 Procedure
4.5.4.1 Extraction by reflux
4.5.4.2 Extraction by ultrasonic bath
4.5.5 Standard solutions
4.5.5.1 Calibration standards
4.5.5.2 Internal standard
4.5.5.3 Operation of gas chromatograph
4.5.6 Standardization
4.5.7 Calculations
4.5.7.1 Timber samples
4.5.7.2 Azole concentration (Cs)
4.5.7.3 Concentration of azole in treated timber sample
4.6 Determination of bifenthrin in preservative-treated wood-based products
4.6.1 Principle
4.6.2 Reagents
4.6.3 Sampling
4.6.4 Procedure
4.6.4.1 Instrument settings and operating conditions
4.6.4.2 Weighing and moisture content
4.6.4.3 Extraction
4.6.5 Data handling and calculations
4.6.5.1 Oven-dried weight
4.6.5.2 Calibration and sample calculation
4.6.5.3 Expression of results
4.7 Determination of permethrin in preservative-treated wood-based product extracts
4.7.1 General
4.7.2 Principle
4.7.3 Reagents
4.7.4 Apparatus
4.7.5 Sampling
4.7.6 Procedure
4.7.7 Data handling and calculations
4.7.7.1 Oven-dry weight
4.7.7.2 Calibration and sample calculation
4.7.7.3 Expression of results
4.8 Determination of imidacloprid in preservative-treated wood-based product extracts
4.8.1 Principle
4.8.2 Reagents
4.8.3 Sampling and moisture content
4.8.4 Procedure
4.8.4.1 Sample preparation
4.8.4.2 Preparation of working standard solution
4.8.4.3 Chromatography
4.8.5 Calculations
4.8.5.1 Moisture content
4.8.5.2 Relative response factor
4.8.5.3 Percentage mass/mass of imidacloprid
4.9 Determination of quaternary ammonium compound in wood-based products
4.9.1 Principle
4.9.2 Reagents
4.9.3 Sampling
4.9.4 Procedure
4.9.4.1 Standardization of sodium lauryl sulfate
4.9.4.2 Analysis of sample extract
4.9.5 Calculation of quaternary ammonium compound retention
4.10 Determination of bifenthrin in glueline-treated wood-based products
4.10.1 Principle
4.10.2 Reagents
4.10.3 Sampling
4.10.4 Procedure
4.10.4.1 Instrument settings and operating conditions
4.10.4.2 Weighing and moisture content
4.10.4.3 Extraction
4.10.5 Preparation of standards
4.10.6 Data handling and calculations
4.10.6.1 Oven-dried weight
4.10.6.2 Calibration and sample calculation
4.10.6.3 Expression of results
4.11 Determination of imidacloprid in glueline-treated wood-based products — ELISA analysis
4.11.1 Principle
4.11.2 Reagents and apparatus
4.11.3 Sampling and moisture content
4.11.4 Procedure
4.11.4.1 Sample preparation
4.11.4.2 ELISA procedure
4.11.4.3 Conversion of absorbance data to imidacloprid concentrations
4.11.5 Calculations
4.11.5.1 Moisture content
4.11.5.2 Sample extract dilution factor
4.11.5.3 Percentage mass per mass (% m/m) of imidacloprid
4.12 Determination of triadimefon and cyproconazole in glueline-treated and surface-treated wood-based products
4.12.1 Principle
4.12.2 Reagents
4.12.3 Sampling and moisture content
4.12.4 Procedure
4.12.5 Standard solutions
4.12.5.1 Internal standard
4.12.5.2 Triadimefon and cyproconazole standards
4.12.6 Quantitation
4.12.7 Chromatography
4.12.8 Calculations
4.12.8.1 Moisture content
4.12.8.2 Corrected sample weight
4.12.8.3 Relative response factor
4.12.8.4 Percentage mass/mass of active ingredients
4.13 Determination of thiacloprid in glueline-treated wood-based products
4.13.1 Principle
4.13.2 Reagents and apparatus
4.13.3 Sampling and moisture content
4.13.4 Procedure
4.13.4.1 Sample preparation
4.13.4.2 ELISA procedure
4.13.4.3 Conversion of absorbance data to thiacloprid concentrations
4.13.5 Calculations
4.13.5.1 Moisture content
4.13.5.2 Sample extract dilution factor
4.13.5.3 Percentage m/m of thiacloprid
4.14 Determination of creosote or pigment-emulsified creosote in preservative-treated wood-based products
4.14.1 Principle
4.14.2 Reagent — Toluene
4.14.3 Procedure
4.14.3.1 Determination of moisture content
4.14.3.2 Apparatus
4.14.3.3 Extraction of timber
4.14.4 Calculations
4.14.5 Correction
4.15 Determination of deltamethrin in preservative-treated wood-based products
4.15.1 Principle
4.15.2 Reagents
4.15.3 Apparatus
4.15.4 Sampling
4.15.5 Procedure
4.15.6 Extraction
4.15.7 Data handling and collection
4.15.8 GC configuration
4.16 Determination of didecyldimethylammonium chloride in wood-based products
4.16.1 Principle
4.16.2 Apparatus
4.16.3 Reagents
4.16.4 Sampling
4.16.5 Calibration
4.16.6 Sample analysis
4.16.7 Calculation of DDAC concentration
4.17 Determination of copper in copper naphthenate preservative-treated wood-based products
4.17.1 Principle
4.17.2 Reagents
4.17.3 Procedure
4.17.3.1 Instrument settings and operation
4.17.3.2 Preparation of a blank
4.17.3.3 Preparation of calibration solutions
4.17.3.4 Analysis of treated timber
4.17.4 Calculation
Appendix A
A.1 General
A.2 Solution analysis methods
A.3 Penetration spot tests
A.4 Retention tests
Bibliography
Cited references in this standard
ASTM D370
Standard practice for dehydration of oil-type preservatives
BS 676
Specification for flasks with graduated necks (phenols type)
NZS 3640
Chemical preservation of round and sawn timber
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