AS NZS 1301.421:2020 pdf free.Method of test for pulp and paper Method 421: Paper, board and pulps一 Determination of pH of aqueous extracts一Cold extraction. 8.1 Weighing Weigh 2,0 g ± 0,1 g of air-dry sample (6.2) in a 250 ml flask (5.1). NOTE Since the amount of sample is not critical, there is no need to determine the dry matter...
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