Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G3170-20126 Entrance Lens Assembly (HM) 5 054,40 Kč G7000-20446 Extractor Lens, 6mm, for 7000B QQQ 40 020,48 Kč G2571-80103 Electron multiplier horn, high gain 69 128,64 Kč