GB/T 27502-2011 English PDF

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GB/T 27502-2011: Preparation method of reference solutions for the measurement of conductivity
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 27502-2011	139	Add to Cart	3 days	Preparation method of reference solutions for the measurement of conductivity	Valid

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Basic data

Standard ID: GB/T 27502-2011 (GB/T27502-2011)
Description (Translated English): Preparation method of reference solutions for the measurement of conductivity
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N53
Classification of International Standard: 71.040.01
Word Count Estimation: 6,643
Date of Issue: 2011-10-31
Date of Implementation: 2012-01-01
Regulation (derived from): Announcement of Newly Approved National Standards No. 15 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 conductivity measurements with calibration solution preparation reagents, instruments or equipment, procedures, and the uncertainty of the solution was saved. This standard applies to electrical conductivity meter, conductivity cell constant calibration solution (hereinafter referred to as solution) preparation.

GB/T 27502-2011: Preparation method of reference solutions for the measurement of conductivity

---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.
Preparation method of reference solutions for the measurement of conductivity ICS 71.040.01 N53 National Standards of People's Republic of China Conductivity measurement calibration solution preparation Issued on. 2011-10-31 2012-01-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Machinery Industry Federation. The standard measurement and control of the instruments Standardization Technical Committee Technical Committee (SAC/TC124/by the National Industrial Process SC6) 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. Kim Chun law, Wang Qiaomei, Wu Jianzhong, Wang Ye, HE Pin-Gang, He Haidong. Conductivity measurement calibration solution preparation

1 Scope

This standard specifies the conductivity measurement calibration solution prepared using the reagents, instruments or equipment, procedures, uncertainty of the solution and preservation solution. This standard applies to conductivity meter, conductivity cell constant preparation of calibration solution (hereinafter referred to as solution).

2 KCl concentration conductivity value

KCl concentration corresponding to the conductivity values \u200b\u200bin Table 1. Table 1 corresponds to the concentration of potassium chloride conductivity value Solution Code Approximate concentration mol/L Conductivity S/cm 15 ℃ 18 ℃ 20 ℃ 25 ℃ 35 ℃ A 1 0.09212 0.09780 0.10170 0.11131 0.13110 B 0.1 0.010455 0.011163 0.011644 0.012852 0.015353 C 0.01 0.0011414 0.0012200 0.0012737 0.0014083 0.0016876 D 0.001 0.0001185 0.0001267 0.0001322 0.0001465 0.0001765

3 Reagents

Preparation of the calibration solution of the desired reagents. a) potassium chloride. pure class distinctions, at (220 ~ 240) ℃ under drying 2h, and then into the dryer to cool to room temperature; b) Water. water or a laboratory conductivity no greater than 0.2 × 10-6S/cm of distilled or deionized water (25 ℃ time).

4 instruments or apparatus

Preparation of the solution required for instruments or apparatus. a) Analytical balance. the largest weighing not more than 200g, verification scale value of 0.1mg; b) 1000mL volumetric flask. A level; c) 100mL pipette. A level; d) thermometer. (0 ~ 50) ℃, second; e) bath. temperature fluctuation degrees ± 0.2 ℃; f) Electric Oven. (0 ~ 300) ℃. Step 5 Preparation 5.1 Environmental conditions The solution should be prepared under the following conditions. ......

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