This Japanese Industrial Standard specifies the general glass electrodes for measuring pH values based on the membrane potential difference of glass membrane, and the reference electrodes used in combination with such glass electrodes (hereafter referred to as "electrodes"). However, this Standard does not apply to electrodes for special purposes and those used for automatic measuring instruments.
JIS Z 8805:2011 Referenced Document
JIS Z 8802 Methods for determination of pH of aqueous solutions