The GTQ commercializes, since 1992 several sensors through D+T Microelectronics, an Economic Interest Group of CSIC and several private capital.
Currently the type of devices on the market are:
ISFET pH Sensors
Ion selective CHEMFET Sensors (Na+, K+, NH4, Ca2+, Cl-...)
IDEs Sensors - Interdigitated Electrodes (Conductivitat, Impedància)