BS ISO 23496:2019
$102.76
Determination of pH value. Reference buffer solutions for the calibration of pH measuring equipment
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 20 |
This document specifies reference buffer solutions for the calibration of pH measuring equipment.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Basic information 4.1 General 4.2 pH values of primary reference buffer solutions |
| 9 | 4.3 pH values of secondary reference buffer solutions |
| 13 | 5 Preparation of primary and secondary reference buffer solutions 5.1 General 5.2 Reference buffer solution A, pH(R) = 1,679(25 °C), Potassium tetraoxalate dihydrate 5.3 Reference buffer solution B, pH(R) = 3,557 (25 °C), Potassium hydrogen tartrate 5.4 Reference buffer solution C, pH(R) = 4,005 (25 °C), Potassium hydrogen phthalate 5.5 Reference buffer solution D, pH(R) = 6,865 (25 °C), Phosphate |
| 14 | 5.6 Reference buffer solution E, pH(R) = 7,413 (25 °C), Phosphate 5.7 Reference buffer solution F, pH(R) = 9,180 (25 °C), Borax 5.8 Reference buffer solution G, pH(R) = 12,454 (25 °C), Calcium hydroxide 5.9 Reference buffer solution H, pH(R) = 3,776 (25 °C), Potassium dihydrogen citrate 5.10 Reference buffer solution I, pH(R) = 10,012 (25 °C), Sodium carbonate/sodium hydrogen carbonate 6 Storage and shelf life 7 Examples of pH(R) values of reference buffer solutions 8 Additional properties of reference buffer solutions |
| 16 | Annex A (informative) Examples of pH(R) values as a function of temperature at temperatures from 55 °C to 95 °C |
| 17 | Annex B (informative) Volumetric method |
| 19 | Bibliography |
