Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G7000-20446 Extractor Lens, 6mm, for 7000B QQQ 1 684,22 € 05971-80103 Electron multiplier replacement horn 2 260,10 € 610-PO10-01 50:1 to 1,000:1 Split Ratio, Post-Colum Flow split Price on request