{"product_id":"ceecemcmi7000s","title":"Cation-Exchange Membrane (CMI-7000S) for Electrolysis and Electrodialysis, CEECEMCMI7000S","description":"\u003cp\u003eThe CMI-7000S (also identified as CXM-200S) is a strong-acid cation exchange membrane produced by Membranes International Inc. It is a heterogeneous membrane, meaning it is composed of ion-exchange resin particles embedded within a polymer matrix, often reinforced with a woven fabric to enhance mechanical durability.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIt is composed of polymer backbone of polystyrene cross-linked with divinylbenzene and functional group of sulphonic acid (-SO3^-). Due to its thickness and cost-efficiency, the CMI-7000S is rarely used in automotive fuel cells but is the primary choice for: (1)\u003cstrong\u003e Electrodialysis (ED\/EDR)\u003c\/strong\u003e: Used for seawater desalination and demineralization of industrial process water. (2) \u003cstrong\u003eElectrodeionization (EDI)\u003c\/strong\u003e: Producing ultrapure water by combining ion exchange resins with membrane separation. (3) \u003cstrong\u003eMetal Recovery \u0026amp; Electroplating\u003c\/strong\u003e: Used in cells for the recovery of metals from plating baths or waste streams. (4) \u003cstrong\u003eBio-Electrochemical Systems\u003c\/strong\u003e: Frequently cited in research for Microbial Fuel Cells (MFCs) and silver recovery systems due to its superior performance compared to its anion-exchange counterpart (AMI-7001S).\u003c\/p\u003e\n\u003ctable border=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eCEECEMCMI7000S (C-EE-CEM-CMI7000S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIon Type\u003c\/td\u003e\n\u003ctd\u003eCation (–SO₃⁻)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReinforcement\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eThickness (um)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e450\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eIon Exchange Capacity (meq\/g)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e~1.6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eArea Resistance (Ω·cm² in NaCl)\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eOperating pH\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e1-10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003eOperating Temperature\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003eup to 90 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003ePre-treatment Required\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003eSoaking 12–24h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003ePrimary Applications\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003eElectrolysis; Electrodialysis, Electrodeionization, Bioelectrochemical System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cem\u003ePackage Grade\u003c\/em\u003e\u003c\/td\u003e\n\u003ctd\u003e10cm*10cm\/pcs\/pack (other sheet size of 20cm*20cm, 30cm*30cm, 40cm*40cm also can be supplied upon request)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUse Note\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp\u003e(1) The CMI-7000S is shipped dry Sodium (Na^+) form. To avoid mechanical failure and ensure ionic conductivity, it must be properly hydrated before installation: \u003cstrong\u003eImmersion\u003c\/strong\u003e: Submerge the membrane in a 5% NaCl solution or the intended application solution. \u003cstrong\u003eDuration\u003c\/strong\u003e: Allow it to soak for at least 12 hours. \u003cstrong\u003eExpansion\u003c\/strong\u003e: During this time, the membrane will hydrate and expand. Always precondition before cutting to your final cell dimensions, as it can expand significantly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReference:\u003c\/strong\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/pubs.acs.org\/doi\/full\/10.1021\/acsestengg.5c01024\"\u003eH. Tang, et al., Influence of Membrane Ion Sorption on Ammonium Transport in Donnan Dialysis with Cation Exchange Membranes, ACS EST Engg. 2026, 6, 2, 909–919\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0960852417313913\"\u003eN.A.D. Ho, et al., Bio-electrochemical reactors using AMI-7001S and CMI-7000S membranes as separators for silver recovery and power generation, Bioresource Technology, 2017, 244, 1006-1014\u003c\/a\u003e. \u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"HZHMKJ","offers":[{"title":"Default Title","offer_id":47369644507366,"sku":"CEECEMCMI7000S","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CEECEMCMI7000S_main.png?v=1771608678","url":"https:\/\/echemsupplies.com\/products\/ceecemcmi7000s","provider":"EChem Supplies","version":"1.0","type":"link"}