GB/T 27501-2011 English PDF

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GB/T 27501-2011: Preparation method of buffer solutions for the measurement of pH value
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 27501-2011	169	Add to Cart	3 days	Preparation method of buffer solutions for the measurement of pH value	Valid

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Basic data

Standard ID: GB/T 27501-2011 (GB/T27501-2011)
Description (Translated English): Preparation method of buffer solutions 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: 7,711
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 type of pH buffer solution, reagents, instruments and equipment, preparation steps. This standard applies to the determination of pH buffer solution (hereinafter referred to as solution) preparation.

GB/T 27501-2011: Preparation method of buffer solutions 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.
Preparation method of buffer solutions for the measurement of pH value ICS 71.040.01 N53 National Standards of People's Republic of China determination of pH buffer 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 GB/T 1.1-2009 given rule drafting. 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. determination of pH buffer solution preparation

1 Scope

This standard specifies the types of pH buffer solution, reagents, instruments and equipment, preparation steps. This standard applies to the preparation of buffer solution (hereinafter referred to as solution) measured on the pH. Category 2 solution 2.1 Standard Liege has six solution, its temperature, molality and the corresponding pH values \u200b\u200bin Table 1. Table 1 at different temperatures corresponding to the solution of pH value temperature Molality 0.05mol/kg Four potassium oxalate 25 ℃ saturated tartar Potassium hydrogen 0.05mol/kg O-phthalic acid, potassium hydroxide, potassium 0.025mol/kg Mixed phosphates 0.01mol/kg Sodium tetraborate 25 ℃ saturated Calcium hydroxide pH value pHB1 pHB3 pHB4 pHB6 pHB9 pHB12 0 1.668 - 4.006 6.981 9.458 13.416 5 1.669 - 3.999 6.949 9.391 13.210 10 1.671 - 3.996 6.921 9.330 13.011 15 1.673 - 3.996 6.898 9.276 12.820 20 1.676 - 3.998 6.879 9.226 12.637 25 1.680 3.559 4.003 6.864 9.182 12.460 30 1.684 3.551 4.010 6.852 9.142 12.292 35 1.688 3.547 4.019 6.844 9.105 12.130 40 1.694 3.547 4.029 6.838 9.072 11.975 45 1.700 3.550 4.042 6.834 9.042 11.828 50 1.706 3.555 4.055 6.833 9.015 11.697 55 1.713 3.563 4.070 6.834 8.990 11.553 60 1.721 3.573 4.087 6.837 8.968 11.426 70 1.739 3.596 4.122 6.847 8.926 - 80 1.759 3.622 4.161 6.862 8.890 - 90 1.782 3.648 4.203 6.881 8.856 - 95 1.795 3.660 4.224 6.891 8.839 - 2.2 solution temperature range. 0 ℃ ~ 95 ℃. ......

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