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A new type of exchangeable measuring-capillary for the Astrup microelectrode, and the measuring technique of determining the pH in body fluids

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Zusammenfassung

Eine neue Form einer auswechselbaren Capillarelektrode zur pH-Messung wird beschrieben. Die Bedeutung der Temperaturkonstanz über die ganze Capillarlänge wird demonstriert. Es wird die Fehlerbreite bei nur teilweiser Füllung der pH-empfindlichen Capillare bestimmt. Um exakte pH-Werte zu erhalten, ist es notwendig, die Mikroelektrode mehrfach ohne Luftzutritt mit der Probe zu füllen.

Summary

A new type of exchangeable capillary electrode is described. The importance of adequate thermostating is demonstrated. The error by partly filling of the pH-sensitive glass-capillary with blood samples is determined. To obtain accurate pH values it is necessary to fill the micro electrode several times anaerobically with the sample.

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Literature

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Authors and Affiliations

  1. From the Departments of Cardiac Diseases and Pulmonary Diseases, University Medical Clinic, Utrecht

    A. H. J. Maas & A. N. P. van Heyst

Authors
  1. A. H. J. Maas
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  2. A. N. P. van Heyst
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Additional information

With 2 Figures in the Text

While this manuscript was being prepared, Radiometer developed in 1963 a new type of effectively thermostated exchangeable electrode (type G 297/G2).

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Maas, A.H.J., van Heyst, A.N.P. A new type of exchangeable measuring-capillary for the Astrup microelectrode, and the measuring technique of determining the pH in body fluids. Pflügers Archiv 284, 191–194 (1965). https://doi.org/10.1007/BF00579307

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  • DOI: https://doi.org/10.1007/BF00579307

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