bSens.SPEX
Standard electrochemical sensor
Research useStandard electrochemical sensor strips for assay development.
- What it provides: printed electrodes for assay development in research.
For research use only. Not for use in diagnostic procedures.
A starting point for proof-of-concept work in biosensor research.
We make the strips, so your work can start at the assay instead of at fabrication.
Use them for prototypes and for developing new assays.
Two versions
Graphene Working electrode and pseudo-reference electrode in graphene carbon.
Graphene with Ag/AgCl Graphene working electrode, with a layer of Ag/AgCl on the graphene carbon pseudo-reference electrode.
Scientific context
What the studies say.
Data from scientific papers and books. They describe the condition, the field and the technology, not bSens products.
A three-electrode screen-printed module brings the working, counter and reference electrodes together. These electrodes allow many experiments with small volumes of reagents and sample, without electrode pretreatment or maintenance. 1
Screen printing produces electrodes with reproducible surfaces at scale. This reproducibility between electrodes makes them suitable for developing clinical sensing platforms and for environmental and food analysis. 1,2
The working electrode can be tailored to each study: carbon, gold or platinum, or modified with nanomaterials such as graphene. This makes screen-printed electrodes a frequent base for developing new electrochemical sensors. 1,2
Screen printing has taken many electrochemical sensors from the research laboratory to the market. Making a screen-printed sensor usually involves three steps: fabricating the electrode, designing its surface and using it in a sensing application. 3,4
Under the IUPAC definition, an electrochemical biosensor is a self-contained integrated device that provides specific quantitative or semi-quantitative analytical information, with a biological recognition element in direct contact with an electrochemical transduction element. A device discarded after one measurement, which cannot monitor the analyte continuously, is called a single-use biosensor. 5
IUPAC recommends describing a biosensor's performance by criteria such as sensitivity, linear concentration range, detection and quantification limits, selectivity, response time, reproducibility, stability and lifetime. Each biosensor can only truly be evaluated for a particular application. 5
References
- 1.Mincu NB, Lazar V, Stan D, et al. Screen-Printed Electrodes (SPE) for In Vitro Diagnostic Purpose. Diagnostics (Basel). 2020;10:517. doi:10.3390/diagnostics10080517
- 2.Yamanaka K, Vestergaard MC, Tamiya E. Printable Electrochemical Biosensors: A Focus on Screen-Printed Electrodes and Their Application. Sensors (Basel). 2016;16:1761. doi:10.3390/s16101761
- 3.Metters JP, Kadara RO, Banks CE. New directions in screen printed electroanalytical sensors: an overview of recent developments. Analyst. 2011;136:1067-1076. doi:10.1039/c0an00894j
- 4.Hayat A, Marty JL. Disposable screen printed electrochemical sensors: tools for environmental monitoring. Sensors (Basel). 2014;14:10432-10453. doi:10.3390/s140610432
- 5.Thévenot DR, Toth K, Durst RA, Wilson GS. Electrochemical biosensors: recommended definitions and classification. Biosens Bioelectron. 2001;16:121-131. doi:10.1016/S0956-5663(01)00115-4
Contact
Results at the Point of Care
Get in touch to learn about the bSens system.
Please do not send health information by e-mail. Biosens does not interpret test results or guide treatment.
Address
Av. Theodomiro Porto da Fonseca 3101, Building 3, Room 1, 93022-715, São Leopoldo, RS, Brazil