AN ADAPTATION OF THE CAPILLARY pH ELECTRODE FOR PRACTICAL USE

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Abstract
CAPILLARY electrodes for pH meters have been applied to the accurate determination of pH when only limited samples were available. This type of electrode has proved particularly valuable for the study of plasma or blood from infants or small animals. However, the problem of frequent plugging and breakage encountered while filling and rinsing the capillary by gravity and/or capillary action has made the micro pH electrode difficult, if not impractical, to use for routine work. Other authors have described a suction system applicable only to the cleansing of a different type of capillary electrode. The accompanying diagram shows how a simple suction system may be attached to the Beckman capillary to allow easy, controlled filling with buffer solutions, plasma or blood, and to permit thorough rinsing.

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