Detech 401A Electron Multiplier Back Catalog number: 401A Availability: In the manufacturer's stock Price on request - + Recommended G1099-20133 Repeller insulator 4 288,20 Kč 3 216,15 Kč G7000-20444 Extractor Lens, 3mm, for 7000B QQQ 6 432,31 Kč 4 824,23 Kč G7000-20446 Extractor Lens, 6mm, for 7000B QQQ 39 519,71 Kč 29 639,78 Kč