Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G2589-20044 Repeller, 5975 239,26 € G3170-20540 CI Lens Insulator 224,31 € G7000-20446 Extractor Lens, 6mm, for 7000B QQQ 1 617,01 €