title: [New medical pH probes for the examination of the gastrointestinal system].
abstract: The paper deals with pH-probes with mercurius chloride versus silver chloride electrodes for intragastric pH-metry. Present-day oral, transnasal, and endoscopic pH-probes with reusable epicutaneous silver chloride electrode have been designed and introduced into medical practice.
authors.forename: G A
authors.initials: GA
authors.lastname: Iakovlev
mesh_terms: D003938:Diagnostic Techniques, Digestive System / Q000295:instrumentation; D004064:Digestive System; D004566:Electrodes; D005745:Gastric Acidity Determination / Q000295:instrumentation; D006801:Humans; D006863:Hydrogen-Ion Concentration; D017669:Mercury Compounds; D018030:Silver Compounds
chemical_list: D017669:Mercury Compounds; D018030:Silver Compounds; C015728:calomel; C037548:silver chloride