SCION Instruments offer a comprehensive line of supplies for your GC ensuring optimal performance throughout their operational life. SCION Instruments GC detector spares & supplies are certified & tested to fit with our flame ionization detector (FID), thermal conductivity detector (TCD), electron capture detector (ECD), nitrogen phosphorus detector (NPD), pulsed flame photometric detector (PFPD) and pulsed ionization detector (PDHID) models.