Type | Pros | Cons |
Chemical | Simple processing without the need of expensive equipment/instrument | Poor sensitivity; Requires the use of chemicals; Low throughput and high labor demand |
Optical | Highly reliable and fully validated detection with the use of luminal; Very high sensitivity with CAPS detector | High cost of instrument purchase and maintenance; Unable to use in small scale sensors |
FET | Solid state sensors without chemicals; Continuously monitoring (on-line analysis) | The accuracy and reliability can still be improved by developing new sensing materials |