{"product_id":"cfebspce","title":"Screen-Printed Carbon Electrode (SPCE) as Flexible Electrochemical Biosensors, CFEBSPCE","description":"\u003cp\u003eA Screen-Printed Carbon Electrode (SPCE) serves as a versatile, low-cost transducer platform for electrochemical biosensors. Its planar format enables micro-volume sampling (20–50 uL), disposable point-of-care testing (POCT), and straightforward integration into microfluidic or portable reader systems.\u003c\/p\u003e\n\u003cp\u003eBecause raw SPCE surfaces contain organic polymer binders (polyester, epoxy, or vinyl resins) covering carbon active sites, immobilization begins with surface activation, followed by receptor tethering: (1) \u003cstrong\u003eDirect Adsorption \u0026amp; Entrapment\u003c\/strong\u003e: Mixing enzymes (e.g., glucose oxidase, lactate oxidase) with Chitosan, Nafion, or bovine serum albumin (BSA) + glutaraldehyde cross-linking matrices, cast directly onto the carbon working area. Rapid and gentle on protein tertiary structures, though diffusion barriers can increase response times. (2) \u003cstrong\u003eCovalent Coupling via Surface Carboxyls (EDC\/NHS Chemistry)\u003c\/strong\u003e: Electrochemical anodization (e.g., +1.5 to +1.8 V in acid) or O2 plasma etches the binder and generates rich surface carboxyl groups (-COOH). Activation using N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide (EDC) and N-hydroxysuccinimide (NHS). Amine coupling of target antibodies, aptamers, or peptide probes through stable amide (-CO-NH-$) bonds. (3) \u003cstrong\u003eDiazonium Salt Grafting\u003c\/strong\u003e: Electrochemical reduction of aryldiazonium salts (e.g., 4-carboxyphenyl or 4-aminophenyl diazonium) at -0.2 to -0.6 V to form robust covalent C-C bonds with the sp^2 carbon lattice. (4) \u003cstrong\u003eAffinity Anchoring\u003c\/strong\u003e: Depositing a streptavidin layer on the carbon to capture biotinylated oligonucleotides or targeting ligands with high orientation control.\u003c\/p\u003e\n\u003ctable border=\"1\" style=\"width: 100.071%; height: 386.8px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 47.6px;\"\u003e\n\u003ctd style=\"width: 24.8016%; height: 47.6px;\"\u003ePart Number\u003c\/td\u003e\n\u003ctd style=\"width: 74.9846%; height: 47.6px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eCFEBSPCE (C-FEB-SPCE)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 291.6px;\"\u003e\n\u003ctd style=\"width: 24.8016%; height: 291.6px;\"\u003eCritical Features\u003c\/td\u003e\n\u003ctd style=\"width: 74.9846%; height: 291.6px;\"\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate Material: PET (thickness=0.28 mm)\u003c\/li\u003e\n\u003cli\u003eWorking Electrode (WE): Carbon Film (Φ 5mm)\u003c\/li\u003e\n\u003cli\u003eCounter Electrode (CE): Carbon\u003c\/li\u003e\n\u003cli\u003eReference Electrode (RE): Ag\/AgCl\u003c\/li\u003e\n\u003cli\u003eTesting Performance: In 5 mM K3[Fe(CN)6] + 0.1 M KCl solution, the oxidation and reduction potential gap is only ~95 mV and the total peak current is up to 426 uA in CV testing. Moreover, the CV testing reproducibility is high (different samples) due to uniform morphology of carbon layer, good conductivity, and excellent adsorption ability.  \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e          \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CFEBSPCE_02_100x100.jpg?v=1788630891\" alt=\"\" style=\"float: none;\"\u003e     \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CFEBSPCE_04_100x100.jpg?v=1788631452\" alt=\"\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIn EIS testing, the charge transfer resistance (Rct) is only 100 \u003cspan\u003eΩ\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003e          \u003c\/span\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CFEBSPCE_03_100x100.jpg?v=1788631267\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAn adapter is included for operation. \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e           \u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CFEBSPCE_05_100x100.jpg?v=1788631576\" alt=\"\" style=\"float: none;\"\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStorage Conditions: RT, avoid light illumination, Al bags sealing, ~50%RH \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 47.6px;\"\u003e\n\u003ctd style=\"width: 24.8016%; height: 47.6px;\"\u003ePackage Grade\u003c\/td\u003e\n\u003ctd style=\"width: 74.9846%; height: 47.6px;\"\u003e\n\u003cul\u003e\n\u003cli\u003e25 pcs\/pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eReferences\u003c\/strong\u003e:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/pubs.rsc.org\/ay\/article-abstract\/12\/12\/1547\/632819\/Applications-of-electrochemical-sensors-and\"\u003eH. Beitollahi, et al., Applications of electrochemical sensors and biosensors based on modified screen-printed electrodes: a review, Anal. Methods (2020) 12 (12): 1547–1560.\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.mdpi.com\/1424-8220\/16\/10\/1761\"\u003eKeiichiro Yamanaka, et al. Printable Electrochemical Biosensors: A Focus on Screen-Printed Electrodes and Their Application, Analytical and Bioanalytical Chemistry, 2005, 382, 884–886.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"HYKJ","offers":[{"title":"Default Title","offer_id":48289658863846,"sku":"CFEBSPCE","price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0774\/6591\/1526\/files\/CFEBSPCE_main.jpg?v=1788630707","url":"https:\/\/echemsupplies.com\/products\/cfebspce","provider":"EChem Supplies","version":"1.0","type":"link"}