In this weekly webinar we answer technical questions from the week.
Question One – Screen Printed Electrodes/Biosensors in flow cells (ALSO SEE QUESTION THREE ON THIS PAGE) – When we are using your sensors in a microfluidic set-up, it might be necessary to clean them between the individual measurements to guarantee that no residues of the previous samples are in the fluidic system and in the flow cell above the sensor. Will cleaning with isopropyl alcohol or ethanol work without affecting the function of the electrochemical sensor?
Question Two – Gluose sensor data – I previously contacted you regarding a project I am working on related to sweat glucose monitoring. Due to a limited budget for my research project, my supervisor advised me to continue the project as a simulation (instead of using the actual sensor). To proceed with my project, it would be extremely helpful if I could access the datasheet of your sensor. This would give me a clear understanding of the output ranges and current values produced by the sensor when detecting glucose levels.
Question Three – An entire glucose sensing package in a flow cell – I have a request from a customer to monitor enzymatic activity. The idea is to let the enzymes react with glucose or casein and to monitor, inline, the evolution of the reaction with one of your electrochemical sensor. By any change, do you have any example of this type of application ?
Question Four – Hello, I am looking for DNA sensor to detect mutation and pathogens and it must work nucleic acid-based. Do you have this type of sensor? Thanks.
Question Five – (please also see Question Two) – After reviewing the answer, I now understand that the glucose sensor range is 0-20 mM, the lactate sensor range is 0-3 mM, and the pH sensor range is 2-10. However, I couldn’t find information regarding the resolution and sensitivity of the sensors in the datasheets. Could you kindly provide details on these parameters? Additionally, in some of the datasheets, the provided graphs show variations between measurements. If you have data available on this variability, I would appreciate it if you could share it as well.
Question Six – Creatinine sensing using ammonium sensors – I was wondering if you could comment on the efficacy of using your ammonium sensors for this purpose, maybe as opposed to using some other pH sensor or an ion-sensitive field effect transistor (ISFET)? Additionally, we were wondering if perhaps some discount could be offered given the novel purpose of our research, our student team, and the potential this use-case holds?
Question Seven – Electrodes for galvanostatic reduction — I am currently exploring potential electrode materials for electrochemical reduction of a few chemical pollutants in acidic solutions using galvanostatic methods. What would you offer as an ideal electrode for the cathode ? I mean which electrode material provides the highest catalytic activity for reduction reactions? As you know, gold has a high catalytic activity but it is very expensive. Another option could be carbon electrodes but I am a bit worried about their chemical and mechanical stability.
Question Eight – I would like to purchase electrode test strip. For cyclic voltammetry studies.
