1951 年 71 巻 2 号 p. 130-134
An improved type vacuum tube potentiometer and calomel electrodes were manufactured and used in the presennt experiment. Glass electrodes were also experimentally manufactured from soft, hard and McInnes glasses into diaphragm-type electrodes. As a result of a determination of the relationship between E. M. F. and pH, McInnes glass was found to be the most suitable. pH of blood, saliva and urine was determined using this electrode.