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US$169.00 · In stock Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 27501-2011: Preparation method of buffer solutions for the measurement of pH value Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 27501-2011 | English | 169 |
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Preparation method of buffer solutions for the measurement of pH value
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GB/T 27501-2011
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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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