Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G7000-20444 Extractor Lens, 3mm, for 7000B QQQ 258,74 € 2800 DeTech Electron Multiplier for Triple axis, 5975 Price on request G1960-20032 ESI Needle 243,27 €