ASTM D1293 - 18
Standard Test Methods for pH of Water
| Aviso: | Las normas ASTM en lectura se visualizan a través del área decliente. Los archivos no se pueden descargar | ||||||
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| Fecha edición: |
2018-01-15
En Vigor
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| Idiomas disponibles: | Inglés | ||||||
| Resumen: | |||||||
| Keywords: | hydrogen ion concentration; pH; pH buffer solution; | ||||||
| Scope: | 1.1 These test methods cover the determination of pH by electrometric measurement using the glass electrode as the sensor. Two test methods are given as follows:
1.2 Test Method A covers the precise measurement of pH in water utilizing at least two of seven standard reference buffer solutions for instrument standardization. 1.3 Test Method B covers the routine measurement of pH in water and is especially useful for continuous monitoring. Two buffers are used to standardize the instrument under controlled parameters, but the conditions are somewhat less restrictive than those in Test Method A. For on-line measurement, also see Test Method D6569 which provides more detail. 1.4 Both test methods are based on the pH scale established by NIST (formerly NBS) Standard Reference Materials.2 1.5 Neither test method is considered to be adequate for measurement of pH in water whose conductivity is less than about 5 μS/cm. Refer to Test Methods D5128 and D5464. 1.6 Precision and bias data were obtained using buffer solutions only. It is the user's responsibility to assure the validity of these test methods for untested types of water. 1.7 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| ICS: | 13.060.50 - Determinación de sustancias químicas en el agua | ||||||
| CTN: | D19.03 - D19.03 | ||||||
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Otras Relaciones |
Es referenciada por C1662 - 24e1 Es referenciada por D1067 - 16(2024) Es referenciada por D5464 - 25 Es referenciada por D1291 - 17(2023) Es referenciada por D5615 - 23 Es referenciada por D8039 - 16(2023) Es referenciada por C1663 - 24 Es referenciada por D8006 - 25 Es referenciada por D4985 - 10(2023) Es referenciada por D3838 - 23 Es referenciada por D2187-17 Es referenciada por D5752-10R17 Es referenciada por D6210-17 Es referenciada por D7475-20 Es referenciada por D7572-15R22 Es referenciada por C1220-21 Es referenciada por D7100-11R20 Es referenciada por D5511-18 Es referenciada por D6139-22 Es referenciada por G202 - 12(2025) |
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