{"title":"Reversible Hydrogen Electrode (RHE)","description":"","products":[{"product_id":"reversible-hydrogen-electrode-rhe","title":"Reversible Hydrogen Electrode (RHE)","description":"\u003cdiv data-page-id=\"T5yFdATmVozMwIxJ1NQcpArOnMe\" data-lark-html-role=\"root\" data-docx-has-block-data=\"true\"\u003e\n\u003ch1 class=\"heading-1 ace-line old-record-id-JhITdwqORoviLaxE0Hfcai2anxg\"\u003e\u003cstrong\u003eReversible Hydrogen Electrode (RHE)\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-DbOrdo8cmonlNuxZTKYcN5tSn5e\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-TYyzdCANxoPsDExRW3Ec2zPsn5d\"\u003eThe \u003cstrong\u003eReversible Hydrogen Electrode (RHE)\u003c\/strong\u003e is a primary reference electrode widely used in electrochemical research, particularly in \u003cstrong\u003eelectrocatalysis, water splitting, CO₂ reduction, and pH-dependent electrochemical studies\u003c\/strong\u003e. Unlike conventional reference electrodes, the RHE provides a \u003cstrong\u003edirect potential reference linked to the hydrogen redox equilibrium\u003c\/strong\u003e, eliminating the need for external pH correction during data interpretation.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-DsS3dYcsEogCuYxhqGAcXL14njf\"\u003eThis RHE is designed for \u003cstrong\u003ehigh-precision laboratory and engineering applications\u003c\/strong\u003e, offering excellent stability, reproducibility, and compatibility with acidic, neutral, and alkaline electrolytes. Its modular glass body and standardized dimensions allow seamless integration into a wide range of electrochemical cells, including flow cells, gas diffusion cells, and H-type cells.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-XKOnd5e3to8j8oxQEQDcw0AZnCg\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-GaA5dQYZLor91wxwM7tc3I1BnWY\"\u003e\u003cstrong\u003eOperating Principle\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-C3Gydw0jHo0i3LxBJSncLyCwnTf\"\u003eThe RHE is based on the \u003cstrong\u003ehydrogen redox reaction\u003c\/strong\u003e:\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Y9Pwd90C9oC7Hjx3mZmcZybSnnb\"\u003eH2 ⇌2H++2e−\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-TdRXd3JTbobzXKxBAyEcyK2jnNb\"\u003eAt equilibrium, the electrode potential is governed by the \u003cstrong\u003eNernst equation\u003c\/strong\u003e:\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Yze4d1T2YoCfZ1xVPG9ctN61nxd\"\u003eERHE =ESHE∘ −0.059×pH(25∘C)\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-TYosdCLYZoEtiBxP2a7cpsGrnTh\"\u003eBecause the hydrogen activity is fixed at unity, the RHE potential automatically shifts with pH, making it a \u003cstrong\u003euniversal reference electrode\u003c\/strong\u003e for comparing electrochemical data across different electrolyte environments.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-DLA2dK1AcorlgQxBsPVcA5QUnEb\"\u003e\u003cstrong\u003eKey Advantages\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-YSsndwGAlooRiSxLx5McqZ4onzt\"\u003e•\u003cstrong\u003eDirect pH-compensated reference\u003c\/strong\u003e No post-measurement pH correction required when reporting potentials versus RHE.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-VZQud3rKgoV2BDxYhp7c7Yusngc\"\u003e•\u003cstrong\u003eUniversal applicability\u003c\/strong\u003e Suitable for acidic, neutral, and alkaline electrolytes.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-TgThdKPgBouNdUxBGEdcpYmUn8g\"\u003e•\u003cstrong\u003eHigh potential accuracy and stability\u003c\/strong\u003e Ideal for kinetic studies, Tafel analysis, and long-term electrolysis experiments.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-YperdHQn7oOpjyxhnmFcUSJQnGd\"\u003e•\u003cstrong\u003eExcellent \u003c\/strong\u003e\u003cstrong\u003ecompatibility\u003c\/strong\u003e Designed to fit standard electrochemical ports and flow-cell configurations.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-I3YpdnwoxomjkixW4PXcoFg3nMb\"\u003e•\u003cstrong\u003eResearch-grade construction\u003c\/strong\u003e Glass body with precise dimensions ensures chemical resistance and reproducibility.\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-VCAQdm2kyokRfYxWxh6cEXWHnhh\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-YnFAdcz96oiaH3xoCg3c8FJxnic\"\u003e\u003cstrong\u003eStructural Design\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-OA46dNVsboLKrMxB3alcs3sAnie\"\u003e•\u003cstrong\u003eUpper Section\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-K8Ajd6ryvoUCkIxUvEMc2eBHnXd\"\u003eOuter diameter: \u003cstrong\u003e12 mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-NFFbdGa7SoxGNlxxs3YcMHURnNc\"\u003e•Length: \u003cstrong\u003e35 mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Y6a0dU2haomk5MxwmIccOwmynOh\"\u003e•Houses the internal hydrogen electrode assembly and electrical connection\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-ErM4dHyOsoVQAmxO2ADcEIApnjb\"\u003e\u003cstrong\u003eLower Glass Tube Section\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-A68IdkNe7oFarZxtEblcIIxjnAc\"\u003e•Outer diameter: \u003cstrong\u003e6 mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-LOa0dStD2oij9Ox3AgkcTi4FnDh\"\u003e•Multiple length options available to accommodate different cell depths\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Xa0KdtOCdomOJ5xSoILclyxRnSg\"\u003e\u003cstrong\u003eTotal Electrode Length (Typical Options)\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-G3vsdcK8NoCEuEx6DhKc7lnPnLb\"\u003e~135 mm\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-MDapdzpuPolAYix9h7Qcm1W8n9d\"\u003e~165 mm\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-GwTCd8lcioHbAyxk653cISxAnDh\"\u003e~215 mm\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Lke7dlpsjoD0vzx3bvhc0UptnUd\"\u003e\u003cem\u003eDimensions are measured manually; minor deviations may occur. Actual product dimensions prevail.\u003c\/em\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-LTwddQBLloMAc2xbq3Nce0Xrnze\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-E0fIdL0wqoBneax3ZI6cEdQynTf\"\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv data-type=\"sheet\" class=\"old-record-id-FHVWdHE82o8BUcxtctEcJ8osnCh\"\u003e\n\u003cmeta content=\"text\/html; charset=utf-8\" http-equiv=\"Content-Type\"\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"192\"\u003e\n\u003ccol width=\"307\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eItem\u003c\/td\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eReversible Hydrogen Electrode (RHE)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eReference System\u003c\/td\u003e\n\u003ctd\u003eH₂ \/ H⁺ equilibrium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003ePotential Definition\u003c\/td\u003e\n\u003ctd\u003eE = −0.059 × pH (25 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eBody Material\u003c\/td\u003e\n\u003ctd\u003eHigh-purity glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eUpper Diameter\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eUpper Length\u003c\/td\u003e\n\u003ctd\u003e35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eLower Diameter\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eTotal Length Options\u003c\/td\u003e\n\u003ctd\u003e~135 mm \/ ~165 mm \/ ~215 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003eLaboratory ambient conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"27\"\u003e\n\u003ctd\u003eElectrolyte Compatibility\u003c\/td\u003e\n\u003ctd\u003eAcidic, neutral, alkaline solutions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"46\"\u003e\n\u003ctd\u003eTypical Use\u003c\/td\u003e\n\u003ctd\u003eReference electrode for electrochemical measurements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-BrXydcfDxoogGexrEFRcLNrSnod\"\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-LfaydI9Buo60Gkxi9yecSmNsnKb\"\u003e•Electrocatalysis research (HER, OER, ORR)\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Xn6qdblsMoYmkZxdR3ocdwD9nqh\"\u003e•CO₂ reduction reaction (CO₂RR)\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-W3W1dPF8eoORk1xlqencIK6fn5f\"\u003e•Water electrolysis studies\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-YahMdDQmxoFG0Rx8MlOcMMdcnue\"\u003e•pH-dependent electrochemical analysis\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-OEYId57pAoP8QHxEZCbcbwWDnDc\"\u003e•Gas diffusion electrode (GDE) systems\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-OUIOdSLU0oczlPx3zREcQuIfnhg\"\u003e•Flow cells and membrane-based electrochemical cells\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Al8PdHGvKo2yMVxlQzlcfUM7nWc\"\u003e•Benchmarking catalytic activity across different electrolytes\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-GvtZdclhgop5TXxlU7uc08senjf\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-UuvodKoBFoiU16xaR1ucPZZOnJc\"\u003e\n\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003cstrong\u003e Notes\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-Jg0fd9gCMo7MZaxPfg7c1zudntg\"\u003e•Compatible with \u003cstrong\u003eH-type cells\u003c\/strong\u003e, \u003cstrong\u003eflow cells\u003c\/strong\u003e, \u003cstrong\u003egas diffusion \u003c\/strong\u003e\u003cstrong\u003eelectrolysis\u003c\/strong\u003e\u003cstrong\u003e cells\u003c\/strong\u003e, and \u003cstrong\u003ephotoelectrochemical systems\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-WKtLdSprao3UpDxz8O7cWh5pn6g\"\u003e•Can replace Ag\/AgCl or Hg\/HgO references when \u003cstrong\u003eRHE-based reporting is required\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-PM7KdiAS1oE7EmxyVdfcwV0xnrf\"\u003e•Recommended for experiments where \u003cstrong\u003eaccurate potential comparison across \u003c\/strong\u003e\u003cstrong\u003epH\u003c\/strong\u003e\u003cstrong\u003e values\u003c\/strong\u003e is critical\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-OnQbdAaA2okVbLxDbzIc72I4n6d\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-J1vjdPOfjoGBc7x1UXwcNZcsnKd\"\u003e\u003cstrong\u003ePackage Contents\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-GrM2dJQpioxN9kxGmbQcqBm5njc\"\u003e•Reversible Hydrogen Electrode (RHE) × 1\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-LwP1d4Hmaorl9pxXQHucZ6T9njc\"\u003e•Protective cap (installed)\u003c\/div\u003e\n\u003cdiv class=\"ace-line ace-line old-record-id-MTWLdsZw0oEtAvxJeEnclazGnJg\"\u003e•Ready for laboratory use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Franklab","offers":[{"title":"Standard 60mm","offer_id":44634944831522,"sku":null,"price":129.0,"currency_code":"USD","in_stock":false},{"title":"Extended 90mm","offer_id":44634944864290,"sku":null,"price":149.0,"currency_code":"USD","in_stock":false},{"title":"Extra-Long 140mm","offer_id":44634944897058,"sku":null,"price":169.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/7008\/4386\/files\/Reversible-Hydrogen-Electrode-_RHE_-1.png?v=1774000455"}],"url":"https:\/\/franklab.shop\/collections\/reversible-hydrogen-electrode-rhe.oembed","provider":"Franklab","version":"1.0","type":"link"}