物理安全检测
ASTM E70用玻璃电极测量水溶液pH值的标准试验方法
ASTM E70用玻璃电极测量水溶液pH值的标准试验方法—标准名称
ASTM E70 Standard Test Method for pH of Aqueous Solutions With the Glass Electrode
ASTM E70用玻璃电极测量水溶液pH值的标准试验方法
ASTM E70用玻璃电极测量水溶液pH值的标准试验方法—适用范围
Scope:
This test method specifies the apparatus and procedures for the electrometric measurement of pH values of aqueous solutions with the glass electrode. It does not deal with the manner in which the solutions are prepared. pH measurements of good precision can be made in aqueous solutions containing high concentrations of electrolytes or water-soluble organic compounds, or both. It should be understood, however, that pH measurements in such solutions are only a semi quantitative indication of hydrogen ion concentration or activity. The measured pH will yield an accurate result for these quantities only when the composition of the medium matches approximately that of the standard reference solutions. In general, this test method will not give an accurate measure of hydrogen ion activity unless the pH lies between 2 and 12 and the concentration of neither electrolytes nor non electrolytes exceeds 0.1 mol/L (M)
ASTM E70用玻璃电极测量水溶液pH值的标准试验方法—引用文件
ASTM D1193 Specification for Reagent Water
ASTM D1293 Test Methods for pH of Water
ASTM D5128 Test Method for On-Line pH Measurement of Water of Low Conductivity
ASTM D5464 Test Method for pH Measurement of Water of Low Conductivity
ASTM D6569 Test Method for On-Line Measurement of pH
ASTM D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
ASTM E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ASTM E180 Practice for Determining the Precision of ASTM Methods for Analysis and Testing of Industrial and Specialty Chemicals
ASTM E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM E1910/E1910M Test Method for Agricultural pH Control Agents, Measurement of pH Change and Buffering Capacity
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