About OKAWA HIROMI
About 堀場製作所
About NISHIO YUJI
About 堀場製作所 開先本部 アプリケーション開発セ
About Readout
About glass electrode
About ISFET
About technological innovation
About electrode
About measuring instrument
About enterprise
About technical history
About pH meter
About ion-selective field effect transistor
About 堀場製作所
About Acid-base equilibrium
About Analytical instruments
About 基礎
About pH