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AS/NZS 1605.1:2018 pdf free.Australian/New Zealand Standard Methods for sampling and analysing timber preservatives and preservative-treated timber. 2.1 GENERAL This Section applies to the sampling of the following materials: (a) Preservative liquid, for the determination of compliance with...

AS/NZS 1605.4:2018 pdf free.Australian/New Zealand Standard Methods for sampling and analysing timber preservatives and preservative-treated timber. 2.1 PRINCIPLE Copper and arsenic are determined by atomic-absorption spectrophotometry. Hexavalent chromium is determined by back-titration of excess iron added as...