Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended 393031501 Electron Multiplier Assembly, 220GCMS 4 528,70 € G7000-20446 Extractor Lens, 6mm, for 7000B QQQ 1 670,18 € 393175101 MULTIPLIER CHANNELTRON, MOD CEM 4755 2 891,06 €