2 0.27 0.43 1.0
5
4 0.19 0.39 1.0
4
8 0.13 0.37 1.0
3
11.1.4 Differences between two averages of N determinations, for the appropriate precision parameter should reach or exceed the table value to be statistically significant at the 95% probability 1evel． 11.2 Bias.
11.2.1 To the extent the pH meter used in this test method is capable of measuring values of pH that are consistent with true values of pH，the determination of the pH of the water-extract from a
bleached textile，using this test method, has 130 known bias．During this study，no determination was made of the true value of this properly by an independent, referee analytical method for the purpose or establishing presence or absence or absence of bias. 关键词： PH值 湿法 英文名称：
pH of the Water-Extract from Wet Processed Textiles