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  1. AS/NZS 1301.421:2020


    Method of test for pulp and paper, Method 421: Paper, board and pulps - Determination of pH of aqueous extracts - Cold extraction

    • Most Recent
  2. AS/NZS 1301.421:2008


    Methods of test for pulp and paper, Method 421: Determination of pH of aqueous extracts - Cold extraction method

    • Historical Version
  3. AS/NZS 1301.421S:1998


    Methods of test for pulp and paper, Method 421S: Determination of the pH value of aqueous extracts of paper, board and pulp - Cold extraction method

    • Historical Version
  4. AS 1301.421S-1991


    Methods of test for pulp and paper, Method 421S: Determination of the pH value of aqueous extracts of paper, board and pulp - Cold extraction method

    • Historical Version
  5. AS 1301.P421M-1973


    Methods of test for pulp and paper (metric units), Method P421M: Determination of the pH value of aqueous extracts of paper - Cold extraction method

    • Historical Version
  6. AS P1.P421M-1964

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    Methods of test for pulp and paper - Determination of the pH value of aqueous extracts of paper - Cold extraction method

    • Historical Version