FID Ignitor* Back to: FID Collector Assembly Kit Siltek FID Ignitor Castle Product Code: 21135 Siltek® FID ignitor castle for Agilent 5890/6890/6850/7890 GCs Price £212.00 Description Constructed of high-quality stainless steel. Meets or exceeds original manufacturer's performance. Individual replacement parts available. *Also fits OI Analytical 4410 detector (similar to OI part # 191833).