AS/NZS 1605.2:2018 pdf free download.Methods for sampling and analysing timber preservatives and preservative-treated timber – Part 2: Determination of preservative penetration by spot test.
AS/NZS 1605.2:2018 sets out the method for determining the penetration of preservative into preservative-treated wood products. It deals with the preparation of material for testing and the methods for determining the penetration of creosote, boron, copper in copper-based preservatives, pentachiorophenol, tin, zinc and fluorine.
1.3.2 Related document
Attention is drawn to the following related document:
Kerner, G. Colour reactions for the detection and determination of the depth of penetration
of preservatives in wood. Hol:i,idustrie. 1969. vol. 22, no. 9, pp. 275—278.
1.4 DEFINITIONS
Refer to AS/NZS 1605.1 for applicable definitions.
1.5 PREPARATION OF TEST PIECES FROM TEST SPECIMEN
One test piece shall be cut from each test specimen, which has been prepared in accordance with AS/NZS 1605.1.
Test pieces shall be prepared to enable examination of the full cross section of the test specimen and so that contamination of the freshly prepared surface is minimized.
1.6 RECOGNITION OF PENETRATION
1.6.1 Method of recognition
The depth and pattern of preservative shall be identified either visually or by the appropriate colorimetric test.
NOTE: For analytical mcthods, see ASNZS 1605.3, Clause 1.6.
1.6.2 Colorimetric test interference
In some instances, naturally occurring substances may interfere with colorimetric tests. In
such cases, analytical methods shall be used.
1.7 EVA IUAT1O OF PENETRATION
1.7.1 Distribution of preservative
Where a colorimetric test is available, the penetration pattern as described in AS/NZSI6O4 series or NZS3 640 shall apply.AS/NZS 1605.2:2018 pdf free download.