{"product_id":"luggin-capillary","title":"Luggin Capillary","description":"\u003ch2 id=\"product-oneliner\"\u003eLuggin Capillary for Reduced iR drop\u003c\/h2\u003e\n\u003cp class=\"text-center\"\u003eClosely position your reference and working electrodes for more accurate voltage measurements\u003c\/p\u003e\n\u003chr\u003e\n\u003cp class=\"text-center\"\u003e\u003ca href=\"#specification\"\u003eSpecifications\u003c\/a\u003e | \u003ca href=\"#gallery\"\u003eGallery\u003c\/a\u003e | \u003ca href=\"#pricing\"\u003ePricing\u003c\/a\u003e | \u003ca href=\"#related-products\"\u003eRelated Products\u003c\/a\u003e | \u003ca href=\"#technical-support\"\u003eTechnical Support\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eA Luggin capillary is a fine, curved glass tube filled with electrolyte, used to position the tip of a reference electrode as close as possible to the working electrode surface to minimize the uncompensated resistance in electrochemical measurements.\u003c\/p\u003e\u003cp\u003eThe technique was first introduced by an Australian chemist “Hans Luggin”. The term \"capillary\" refers to the fine bore of the tube; its narrow diameter relies on capillary forces to retain the electrolyte within the tip, preventing gas bubble entrapment and maintaining a stable, continuous ionic pathway between the reference electrode and the working electrode surface.\u003c\/p\u003e\u003cp\u003eAccurate measurement of the potential between the working and reference electrode is essential for reliable electrochemical data. Any uncompensated resistance, particularly the solution resistance between the working electrode and the reference electrode tip, introduces error into potential measurements, distorting kinetic and mechanistic data. The characteristic curved tip of the Luggin capillary allows the reference electrode to be brought close to the working electrode without physically obstructing current flow, substantially reducing this uncompensated (iR) resistance.\u003c\/p\u003e\n\u003cp\u003eThe capillary also functions as a secondary junction, physically isolating the reference electrode from the bulk electrolyte. This limits the ingress of reference electrode fill solution ions (such as Ag⁺ or Cl⁻) into the main cell, protecting the working electrolyte from contamination, which can otherwise compromise sensitive electrochemical measurements over time.  Available in two lengths, 34 mm and 47 mm, to suit different cell geometries and reference electrode positioning requirements.\u003c\/p\u003e\n\u003cdiv class=\"info-tip-box\"\u003ePlease select the Luggin capillary length according to your specific cell model. A new Luggin capillary cannot be retrofitted into cells that were not originally designed with a Luggin capillary port, as the internal dimensions and port structure may not accommodate it.\u003c\/div\u003e\n\u003cdiv class=\"row display-flex\"\u003e\n\u003cdiv class=\"col-xs-12 col-sm-4 col-md-3 text-center margin-top\"\u003e\n\u003cimg loading=\"lazy\" width=\"50\" height=\"50\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-icon.svg\"\u003e\n\u003cp class=\"blue-heading no-margin text-center\"\u003eCurved Tip Design\u003c\/p\u003e\n\u003cp class=\"text-center\"\u003eClose proximity positioning to the working electrode\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col-xs-12 col-sm-4 col-md-3 text-center margin-top\"\u003e\n\u003cimg loading=\"lazy\" width=\"50\" height=\"50\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/safe-enviroment-icon.svg\"\u003e\n\u003cp class=\"blue-heading no-margin text-center\"\u003eAs a Secondary Junction\u003c\/p\u003e\n\u003cp class=\"text-center\"\u003eReduce main electrolyte contamination\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col-xs-12 col-sm-4 col-md-3 text-center margin-top\"\u003e\n\u003cimg loading=\"lazy\" width=\"50\" height=\"50\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/versatile-icon.svg\"\u003e\n\u003cp class=\"blue-heading no-margin text-center\"\u003eFlexibility of Selection\u003c\/p\u003e\n\u003cp class=\"text-center\"\u003eAvailable in 34 mm and 47 mm lengths\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"col-xs-12 col-sm-4 col-md-3 text-center margin-top\"\u003e\n\u003cimg loading=\"lazy\" width=\"50\" height=\"50\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/large-tick-icon.svg\"\u003e\n\u003cp class=\"blue-heading no-margin text-center\"\u003eCompatibility\u003c\/p\u003e\n\u003cp class=\"text-center\"\u003eCompatible with standard reference electrode diameter\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2 id=\"specification\"\u003eSpecifications\u003c\/h2\u003e\n\u003chr\u003e\n\u003ctable style=\"width: 100%; height: 274.313px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth width=\"38.2%\" style=\"width: 41.9656%; height: 39.1875px;\"\u003eProduct Name\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 39.1875px;\"\u003eLuggin Capillary (34mm)\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 39.1875px;\"\u003eLuggin Capillary (47mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 19.5938px;\"\u003eSKU\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 19.5938px;\"\u003eC2041E1\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 19.5938px;\"\u003eC2041K1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 19.5938px;\"\u003eLength\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 19.5938px;\"\u003e34 mm\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 19.5938px;\"\u003e47mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 19.5938px;\"\u003eMaterial\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 19.5938px;\"\u003eBorosilicate Glass\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 19.5938px;\"\u003eBorosilicate Glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 19.5938px;\"\u003eTip\/Frit Material\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 19.5938px;\"\u003eCeramic\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 19.5938px;\"\u003eCeramic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 19.5938px;\"\u003eTip\/Frit Diameter\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 19.5938px;\"\u003e1 mm\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 19.5938px;\"\u003e1 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 19.5938px;\"\u003eOuter Diameter\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 19.5938px;\"\u003e2 mm\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 19.5938px;\"\u003e2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 39.1875px;\"\u003eCompatible Reference Electrode Diameter\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 39.1875px;\"\u003eAll \u0026lt;7 mm\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 39.1875px;\"\u003eAll \u0026lt;7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.375px;\"\u003e\n\u003cth style=\"width: 41.9656%; height: 78.375px;\"\u003eElectrolyte Compatibility\u003c\/th\u003e\n\u003ctd style=\"width: 31.5001%; height: 78.375px;\"\u003eNot recommend for strongly acidic or alkaline or molten salt electrolytes\u003c\/td\u003e\n\u003ctd style=\"width: 25.8123%; height: 78.375px;\"\u003eNot recommend for strongly acidic or alkaline or molten salt electrolytes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cfigure\u003e\u003cimg alt=\"Luggin Capillary Tubes\" loading=\"lazy\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-capillary-diagram.svg?\u0026amp;width=848\" width=\"848\"\u003e\n\u003cfigcaption\u003eDiagram of 34 mm and 47 mm Luggin Capillary Tubes\u003c\/figcaption\u003e\n\u003c\/figure\u003e\n\u003ch2 id=\"gallery\"\u003eLuggin Capillary Gallery\u003c\/h2\u003e\n\u003chr\u003e\n\u003cdiv class=\"carousel-container carousel-gallery\"\u003e\n\u003cdiv class=\"carousel-track ease-in-out-transition\"\u003e\n\u003ca title=\"Luggin Capillary\" href=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-capillary-size-comp.jpg?width=1024\" class=\"carousel-item\"\u003e \u003cimg width=\"420\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-capillary-size-comp.jpg?width=420\u0026amp;height=280\u0026amp;crop=center\" loading=\"lazy\" height=\"280\" alt=\"Luggin Capillary\"\u003e \u003c\/a\u003e \u003ca title=\"Cell with salt bridge\" href=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/electrochemical-cell-with-luggin-capillary-inlet.jpg?width=1024\" class=\"carousel-item\"\u003e \u003cimg width=\"420\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/electrochemical-cell-with-luggin-capillary-inlet.jpg?width=420\u0026amp;height=280\u0026amp;crop=center\" loading=\"lazy\" height=\"280\" alt=\"Cell with salt bridge\"\u003e \u003c\/a\u003e \u003ca title=\"Luggin Capillary Frit\" href=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-capillary-frit.jpg?width=1024\" class=\"carousel-item\"\u003e \u003cimg width=\"420\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-capillary-frit.jpg?width=420\u0026amp;height=280\u0026amp;crop=center\" loading=\"lazy\" height=\"280\" alt=\"Luggin Capillary Frit\"\u003e \u003c\/a\u003e \u003ca title=\"Gas Dispersion Tube Frit\" href=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/electrochemical-cell-with-luggin-capillary-inlet-setup.jpg?width=1024\" class=\"carousel-item\"\u003e \u003cimg width=\"420\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/electrochemical-cell-with-luggin-capillary-inlet-setup.jpg?width=420\u0026amp;height=280\u0026amp;crop=center\" loading=\"lazy\" height=\"280\" alt=\"Gas Dispersion Tube Frit\"\u003e \u003c\/a\u003e \u003ca title=\"Luggin Capillary Closeup\" href=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-capillary-closeup.jpg?width=1024\" class=\"carousel-item\"\u003e \u003cimg width=\"420\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/luggin-capillary-closeup.jpg?width=420\u0026amp;height=280\u0026amp;crop=center\" loading=\"lazy\" height=\"280\" alt=\"Luggin Capillary Closeup\"\u003e \u003c\/a\u003e\n\u003c\/div\u003e\n\u003ca class=\"carousel-left-control\" role=\"button\"\u003e \u003csvg class=\"icon icon-chevron-left\"\u003e\u003cuse href=\"#icon-chevron-left\"\u003e\u003c\/use\u003e\u003c\/svg\u003e \u003cspan class=\"sr-only\"\u003ePrevious\u003c\/span\u003e \u003c\/a\u003e \u003ca class=\"carousel-right-control\" role=\"button\"\u003e \u003csvg class=\"icon icon-chevron-right\"\u003e\u003cuse href=\"#icon-chevron-right\"\u003e\u003c\/use\u003e\u003c\/svg\u003e \u003cspan class=\"sr-only\"\u003eNext\u003c\/span\u003e \u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch2 id=\"pricing\"\u003ePricing and Options\u003c\/h2\u003e\n\u003chr\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth width=\"38.2%\"\u003eProduct Name\u003c\/th\u003e\n\u003cth width=\"30.9%\"\u003eProduct Code\u003c\/th\u003e\n\u003cth width=\"30.9%\"\u003ePrice\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLuggin Capillary (34mm)\u003c\/td\u003e\n\u003ctd\u003eC2041E1\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"ossila-currency-exchange\" data-gbp-price=\"30\" data-nosnippet=\"true\"\u003e£30\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLuggin Capillary (34mm) - Pack of 5\u003c\/td\u003e\n\u003ctd\u003eC2041E1-5\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"ossila-currency-exchange\" data-gbp-price=\"130\" data-nosnippet=\"true\"\u003e£130\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLuggin Capillary (47 mm)\u003c\/td\u003e\n\u003ctd\u003eC2041K1\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"ossila-currency-exchange\" data-gbp-price=\"30\" data-nosnippet=\"true\"\u003e£30\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLuggin Capillary (47mm) - Pack of 5\u003c\/td\u003e\n\u003ctd\u003eC2041K1-5\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"ossila-currency-exchange\" data-gbp-price=\"130\" data-nosnippet=\"true\"\u003e£130\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 id=\"related-products\"\u003eRelated Products\u003c\/h2\u003e\n\u003chr\u003e\n\u003cdiv class=\"collection-container\"\u003e\n\u003cdiv class=\"collection-tile\"\u003e\u003ca href=\"\/collections\/electrochemical-cells\"\u003e\n\u003cdiv class=\"collection-button background-ossila-blue\"\u003e\n\u003cimg width=\"150\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/electrochemical-cell-collection-design.png?v=1715167619\" loading=\"lazy\" height=\"109\" alt=\"Electrochemical Cell Collection\"\u003e\n\u003cp\u003e\u003cstrong\u003eElectrochemical Cells\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"collection-tile\"\u003e\u003ca href=\"\/collections\/photoelectrochemical-cells\"\u003e\n\u003cdiv class=\"collection-button background-light-blue\"\u003e\n\u003cimg width=\"150\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/Photoelectrochemical-cells-collection-design.png?v=1715167619\" loading=\"lazy\" height=\"109\" alt=\"Photoelectrochemical Cell Collection\"\u003e\n\u003cp\u003e\u003cstrong\u003ePhotoelectrochemical\u003cbr\u003eCells\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"collection-tile\"\u003e\u003ca href=\"\/collections\/electrodes\"\u003e\n\u003cdiv class=\"collection-button background-ossila-blue\"\u003e\n\u003cimg width=\"150\" src=\"https:\/\/www.ossila.com\/cdn\/shop\/files\/Electrode-collection-design.png?v=1715167618\" loading=\"lazy\" height=\"109\" alt=\"Electrochemical Cell Collection\"\u003e\n\u003cp\u003e\u003cstrong\u003eElectrodes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Ossila","offers":[{"title":"34 mm \/ Individual Item","offer_id":52163379331288,"sku":"C2041E1","price":45.0,"currency_code":"USD","in_stock":true},{"title":"34 mm \/ Pack of 5","offer_id":52163379364056,"sku":"C2041E1-5","price":195.0,"currency_code":"USD","in_stock":true},{"title":"47 mm \/ Individual Item","offer_id":52163379396824,"sku":"C2041K1","price":45.0,"currency_code":"USD","in_stock":true},{"title":"47 mm \/ Pack of 5","offer_id":52163379429592,"sku":"C2041K1-5","price":195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0823\/0287\/files\/luggin-capillary-47mm-product-photo.jpg?v=1786458258","url":"https:\/\/www.ossila.com\/products\/luggin-capillary","provider":"Ossila","version":"1.0","type":"link"}