✦ LIBER ✦
Improvements in the precision of pH measurements a laboratory reference electrode with renewable free-diffusion liquid junction
✍ Scribed by A.K. Covington; P.D. Whalley; W. Davison
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 605 KB
- Volume
- 169
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
Deficiencies in the performance of commercial reference electrodes with liquid junctions have been demonstrated in pH measurements on diluted standard buffers and fresh water samples. These problems can be overcome with renewable liquid junctions. A novel reference electrode is described, and its advantages demonstrated in titrimetric determination of the apparent second acidity constant of phosphoric acid. The new system suffers from no stirring, bias or memory errors.