Search Results       Your search for [subject]Hydrogen-ion concentration -- Measurement -- Instruments -- Catalogs returned 1 record.           The pH and conductivity handbook. Stamford, Ct.: Omega Engineering, Inc., 1990. Subject: Hydrogen-ion concentration -- Measurement -- Instruments -- Catalogs; Hydrogen-ion concentration -- Instruments -- Catalogs; Electric conductivity -- Measurement -- Instruments -- Catalogs; Omega Engineering, Inc. -- Catalogs.          Add to Book Cart Relevance: 52.51%