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GB/T 27757-2011: Reference electrodes for the measurement of pH value
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 27757-2011 | English | 209 |
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Reference electrodes for the measurement of pH value
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GB/T 27757-2011
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Basic data | Standard ID | GB/T 27757-2011 (GB/T27757-2011) | | Description (Translated English) | Reference electrodes for the measurement of pH value | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N53 | | Classification of International Standard | 71.040.01 | | Word Count Estimation | 9,920 | | Date of Issue | 2011-12-30 | | Date of Implementation | 2012-05-01 | | Quoted Standard | GB/T 191-2008; GB/T 2828.1-2003; GB/T 2829-2002; GB/T 11606-2007 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 22 of 2011 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the measurement of pH reference electrode classification, requirements, test methods, inspection rules, marking, packaging, transportation, storage and so on. This standard applies to mercury/mercury chloride, silver/silver chloride electrode material for the general type within the saturated potassium chloride reference electrode, the other reference electrode for implementation. | GB/T 27757-2011: Reference electrodes for the measurement of pH value---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Reference electrodes for the measurement of pH value
ICS 71.040.01
N53
National Standards of People's Republic of China
pH value measured by the reference electrode
Issued on. 2011-12-30
2012-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard GB/T 1.1-2009 given rule drafting.
Please note that some of the content of this document may involve patents. Distribution of this document
Institutions do not assume the responsibility to identify these patents.
The standard proposed by China Machinery Industry Federation.
The standard measurement and control of the instruments Standardization Technical Committee Technical Committee (SAC/TC124/SC6) by the National Industrial Process
Centralized.
This standard was drafted. Shanghai Precision Scientific Instrument Co., Ltd., Shanghai Measurement and Testing Technology Research Institute, East China Normal University, Shanghai Lei
Pudong magnetic Instrument Factory Lianying Chang.
The main drafters of this standard. Wu Jianzhong, Wang Qiaomei, Kim Chun law, Wangzhen Tao, HE Pin-Gang, He Haidong.
pH value measured by the reference electrode
1 Scope
This standard specifies the pH value determined by the reference electrode was classified, requirements, test methods, inspection rules, marking, packaging, transportation, storage and so on.
This standard applies to mercury/calomel, silver/silver chloride electrode material within the general type of saturated potassium chloride reference electrode, the other reference electrode
Pole for implementation (hereinafter referred to as electrode).
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 191-2008 Packaging - Pictorial signs (ISO 780.1997, MOD)
GB/T 2828.1-2003 Sampling procedures for inspection - Part 1. by acceptance quality limit (AQL) retrieval batch test sample
Programme (ISO 2859-1.1999, IDT)
GB/T 2829-2002 periodic inspection Sampling procedures and tables (suitable for process stability test)
GB/T 11606-2007 analytical instruments environmental test methods
Category 3
Divided by the use of premises.
a) Laboratory;
b) line type.
4 Requirements
4.1 Electrode normal operating conditions
Electrode should be able to work under the following conditions.
a) Ambient temperature. 5 ℃ ~ 40 ℃;
b) Relative humidity. ≤90%;
c) the measured solution temperature. 0 ℃ ~ 70 ℃;
d) The junction is no serious corrosion and contamination of water.
4.2 electrode potential bias
Electrode potential deviation shall not exceed ± 3mV.
4.3 electrode stability
Stability of the electrode should meet the following requirements.
a) Laboratory. ± 2mV/7h;
b) On-Line. ± 3mV/24h.
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