Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G3870-20449 Extraction Lens, 9mm 6 298,56 Kč 05971-20143 ION FOCUS-ONE PIECE 13 970,88 Kč 342015 Triode Mini Ion Gauge Tube with 90° Elbow Price on request