Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G3170-60172 5975C SST EI 350 Repeller Assembly 1 149,66 € 342015 Triode Mini Ion Gauge Tube with 90° Elbow Price on request G3870-20449 Extraction Lens, 9mm 252,63 €