text: Saanw 1980 camancɛ la, BioFET wɛrɛw dilana ka ɲɛ, in'a fo FET min bɛ gazi sama (GASFET), FET min bɛ bisili sama (PRESSET), masini simiki baara lan (ChemFET), ISFET ɲɛjɔyoro (REFET), FET yɛlɛmalen anzimatiki (ENFET) ani FET fen tɛ see min na yɛlɛma len (IMFET).