GB/T 20245.5-2013 English PDF

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GB/T 20245.5-2013: Expression of performance of electrochemical analyzers -- Part 5: Oxidation-reduction potential or redox potential
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 20245.5-2013	254	Add to Cart	3 days	Expression of performance of electrochemical analyzers -- Part 5: Oxidation-reduction potential or redox potential	Valid

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Basic data

Standard ID: GB/T 20245.5-2013 (GB/T20245.5-2013)
Description (Translated English): Expression of performance of electrochemical analyzers -- Part 5: Oxidation-reduction potential or redox potential
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N53
Classification of International Standard: 71.040.10
Word Count Estimation: 13,135
Quoted Standard: GB/T 20245.1-2006
Adopted Standard: IEC 60746-5-1992, IDT
Regulation (derived from): National Standards Bulletin 2013 No. 10
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: Manufacturers description for the determination of aqueous redox potential value analyzer, sensor unit and electronic unit terminology, definitions and requirements, and class analyzer, sensor unit and electronic unit performance

GB/T 20245.5-2013: Expression of performance of electrochemical analyzers -- Part 5: Oxidation-reduction potential or redox potential

---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.
Expression of performance of electrochemical analyzers Part 5. Oxidation-reduction potential or redox potential ICS 71.040.10 N53 National Standards of People's Republic of China Performance of electrochemical analyzers Part 5. redox potential Part 5. Oxidation-reductionpotentialorredoxpotential (IEC 60746-5.1992, IDT) Issued on. 2013-07-19 2013-12-15 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 20245 "performance of electrochemical analyzers" is divided into the following five sections. --- Part 1. General; Part --- Article 2. pH value; --- Part 3. electrolyte conductivity; --- Part 4. using coated current sensor measurement of dissolved oxygen; --- Part 5. redox potential. This section GB/T 20245 Part 5. This section drafted in accordance with the rules of GB/T 1.1-2009 and GB/T 20000.2-2009 given. This section uses the translation method is equivalent to using IEC 60746-5.1992 "performance of electrochemical analyzers - Part 5. redox Potential. " For ease of use, this section made the following editorial changes. --- GB/T 20245.5 standard text used in "this part of GB/T 20245 of" instead of "IEC 60746 Part of the present"; --- Decimal symbol used in place of ",". ","; --- Remove the foreword to international standards. Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. This part is proposed by China Machinery Industry Federation. This part of the measurement and control of Standardization Technical Committee (SAC/TC124) is administered by the National industrial processes. This section drafted by. China Instrument Industry Association, Sichuan-Chongqing Analytical Instruments Co., Ltd., Shanghai Electronics Shares have scientific instruments Limited, China Institute of Metrology, Hailei magnetic sensor Technology Co., Ltd., Shanghai Measurement and Testing Technology Research Institute, Beijing metering Detection Research Institute, Hangzhou condensing Environmental Protection Technology Co., Beijing Analytical Instrument Institute. The main drafters of this section. Maya Juan, Li Xin, Jin Chun method, repair Hongyu, He Haidong, Ye Hong, Wu Hong, Wang Jing, Louxing Jun. Performance of electrochemical analyzers Part 5. redox potential

1 Scope

This section GB/T 20245 specifies the manufacturer describes an aqueous solution for the determination of the value of the oxidation-reduction potential analyzer, sensor unit The term elements and electronic units, definitions and requirements, as well as the performance of such test analyzer, sensor unit and electronic unit. This section applies to an inert conductive electrode measured oxidation reduction potential value of an aqueous solution of analyzers, sensors and electronic units.

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 20245.1-2006 performance of electrochemical analyzers represent - Part 1. General (IEC 60746.1.2003, IDT) 3 symbols, terms and definitions 3.1 Symbol The following symbols apply to this document. αred --- reducing ion activity αox --- oxidant ion activity E --- emf temperature of the sample at t EO --- oxidized and reduced state ion activity ratio of 1.00, the redox potential of the standard F --- Faraday constant, 96493.1C · mol-1 n --- the number of electrons involved in the redox process m --- the number of protons involved in the redox process R --- molar gas constant, 8.3145J · mol-1 · K-1 Celsius temperature t --- T --- thermodynamic temperature of the sample, the test solution and sensors (T = t 273.15) 3.2 Terms and Definitions GB/T 20245.1-2006 and as defined in the following terms, definitions and symbols apply to this document. 3.2.1 Redox systems redoxsystem Redox systems by a given solution oxidized and reduced form of ions, only when the solution of the pros and cons of both ions by electron Into each other and reach equilibrium when the system was present. Such as Fe3/Fe2 redox system formed, see equation (1). Fe3 e → - Fe2 (1) ......

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