Akwai manyan nau’ikan narkar da gas na kan layi guda biyu da ake amfani da su a cikin tsarin wutar lantarki a halin yanzu. Daya shine a yi amfani da na’urar bincike na membran iskar gas don tuntuɓar mai taransfoma don tattara iskar gas a cikin man tasfoman wutar lantarki da aka nutsar da mai. Masu ganowa sun haɗa da semiconductors na iskar gas da ƙwayoyin mai; ɗayan kuma shine amfani da iskar gas ko fasahar nazarin chromatography. Yi nazarin narkar da iskar gas ta kan layi a cikin mai.

Kayayyakin da ke amfani da na’urar binciken membran mai daɗaɗɗen iskar gas duka na waje ne da na cikin gida. Gabaɗaya, daidaiton bincike na gabaɗaya ba shi da yawa. Musamman ma game da yin amfani da na’urar ganowa ta semiconductor mai saurin iskar gas, yawanci hydrogen ne kawai zai iya nunawa; yayin da ake amfani da kwayar mai a matsayin abin ganowa, wani bangare na sauran iskar gas kawai ake iya ganowa sai dai hydrogen. Misali, hydrogen (100%), carbon monoxide (18%), ethylene (1.5%), da acetylene (8%) yawanci ana iya gano su azaman haɗaɗɗun iskar gas huɗu. Wato jimillar iskar gas da aka gano galibi hydrogen ne.

Misali, idan ainihin abin da ke narkar da iskar gas a cikin injin wutar lantarki da aka nutsar da mai shine:

Hydrogen ( ) — ; Carbon monoxide ( )——

Ethylene ( ) — ; Acetylene () —

Sa’an nan: kayan aikin ya nuna darajar