What are some technologies/biosensors for real time kinetic analysis of reactions? [closed]








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I am in a lab that has used [surface plasmon resonance](https://en.wikipedia.org/wiki/Surface_plasmon_resonance) (SPR) and ELISA very heavily over the past few years, and we are thinking of getting a new machine. I'm wondering what other technologies exist for making similar measurements; particularly protein -protein/antibody-antiggen binding.


[Octet](http://www.fortebio.com/octet-RED96.html) in particular looks very different because rather than passing a flow of analyte over the ligand, it puts them together in a chamber, which I'm guessing allows the user to make much longer measurements, which could be really useful for measuring low affinities and low concentrations. 


Also what are peoples experiences of different Biosensors? 


