{"product_id":"horiba-ion-electrode-replacement-cartridges-membranes","title":"Horiba Ion Electrode Replacement Cartridges \u0026 Membranes","description":"\u003cp\u003eReplacement sensing cartridges and membrane caps for HORIBA combination ion-selective electrodes. The cartridge carries the ion-sensing element, and it is the consumable part of the electrode — when response goes slow, the slope falls off, or readings will no longer calibrate, replacing the cartridge restores the electrode instead of requiring a whole new one.\u003c\/p\u003e\n\n\u003cp\u003eAt a fraction of the price of a complete electrode kit, keeping the right cartridge on the shelf is what keeps an ISE method running. Cartridges are electrode-specific; match the part below to the electrode you own.\u003c\/p\u003e\n\n\u003ch3\u003eCartridges and membranes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmmonia membrane cap, set of 3\u003c\/strong\u003e (3200705774) — for the 5002S-10C ammonia electrode. Gas-permeable membrane caps, supplied three to a set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7683S calcium ion cartridge\u003c\/strong\u003e (3200697414) — for the 6583S-10C calcium electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7660S chloride ion cartridge\u003c\/strong\u003e (3200697411) — for the 6560S-10C chloride electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7661S fluoride ion cartridge\u003c\/strong\u003e (3200693606) — for the 6561S-10C fluoride electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7681S nitrate ion cartridge\u003c\/strong\u003e (3200697412) — for the 6581S-10C nitrate electrode.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e7682S potassium ion cartridge\u003c\/strong\u003e (3200697413) — for the 6582S-10C potassium electrode.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen to replace a cartridge\u003c\/h3\u003e\n\u003cp\u003eThe clearest indicator is calibration slope. An ion-selective electrode should produce close to the theoretical millivolt change per decade of concentration; when the measured slope drifts well outside that, the sensing element is exhausted. Other signs are a response time that lengthens from seconds to minutes, readings that will not settle, and standards that no longer reproduce. Verify with fresh standards and correct ionic strength adjustor addition before replacing — degraded standards mimic a failing cartridge.\u003c\/p\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRestoring ISE performance in routine wastewater and drinking water laboratories\u003c\/li\u003e\n\u003cli\u003eMaintaining ammonia and nitrate methods for nitrification monitoring\u003c\/li\u003e\n\u003cli\u003eFluoride monitoring for drinking water fluoridation compliance\u003c\/li\u003e\n\u003cli\u003eChloride determination in water, brines and construction materials\u003c\/li\u003e\n\u003cli\u003eSoil, plant tissue and fertilizer analysis for calcium and potassium\u003c\/li\u003e\n\u003cli\u003eTeaching laboratories where electrodes see heavy seasonal use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDocumentation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.horiba.com\/ind\/water-quality\/download\/\"\u003eHORIBA water quality document library — electrode brochures and manuals\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated items\u003c\/h3\u003e\n\u003cp\u003eComplete ion-selective electrode kits, standard solutions, filling solutions and ionic strength adjustors are in the \u003ca href=\"https:\/\/envirotechonline.com\/collections\/horiba-parts-accessories\"\u003eHoriba Parts \u0026amp; Accessories\u003c\/a\u003e collection.\u003c\/p\u003e\n\n\u003cp\u003eBrowse all \u003ca href=\"https:\/\/envirotechonline.com\/collections\/horiba\"\u003eHORIBA instruments\u003c\/a\u003e.\u003c\/p\u003e","brand":"Horiba","offers":[{"title":"Ammonia Membrane Cap, Set of 3 - for 5002S-10C - 3200705774","offer_id":48226418983102,"sku":"3200705774","price":313.0,"currency_code":"USD","in_stock":true},{"title":"7683S Calcium Ion Cartridge - for 6583S-10C - 3200697414","offer_id":48226419015870,"sku":"3200697414","price":421.0,"currency_code":"USD","in_stock":true},{"title":"7660S Chloride Ion Cartridge - for 6560S-10C - 3200697411","offer_id":48226419048638,"sku":"3200697411","price":421.0,"currency_code":"USD","in_stock":true},{"title":"7661S Fluoride Ion Cartridge - for 6561S-10C - 3200693606","offer_id":48226419081406,"sku":"3200693606","price":710.0,"currency_code":"USD","in_stock":true},{"title":"7681S Nitrate Ion Cartridge - for 6581S-10C - 3200697412","offer_id":48226419114174,"sku":"3200697412","price":421.0,"currency_code":"USD","in_stock":true},{"title":"7682S Potassium Ion Cartridge - for 6582S-10C - 3200697413","offer_id":48226419146942,"sku":"3200697413","price":421.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/csm_Ion_Sensor_Cartridge_396ba3b411_6714bd8e-83a4-4b80-8042-eaa480e22c98.png?v=1785337168","url":"https:\/\/envirotechonline.com\/products\/horiba-ion-electrode-replacement-cartridges-membranes","provider":"EnviroTech Services","version":"1.0","type":"link"}