ET Enterprises Limited is a newly formed company which has taken over the photomultiplier tubes and accessories business of Electron Tubes Limited and will continue to manufacture, supply and develop the Electron Tubes br......ET Enterprises Limited is a newly formed company which has taken over the photomultiplier tubes and accessories business of Electron Tubes Limited and will continue to manufacture, supply and develop the Electron Tubes brand product range. A subsidary of Ludlum Measurements Inc., ET Enterprises Limited will benefit from the additional production facilities of ADIT, a US based producer of photomultipliers. Similarly, ADIT, which specialises in photomultipliers for scintillation applications, will have access to ET Enterprises development resources and experience in many different photomultiplier applications worldwide. Photomultipliers available include types which are suitable for: Operation at high and low temperatures Shock and vibration environments Spectral range from the vacuum-UV to near infra-red Wide dynamic range from a few photons/s to > 50 M photons/s