Horiba has been selling the same micro mass spectrometer that IMSC "owns" and has been touting as the next thing in hyphenated detection for around 4 years. Horiba sells it as a "worlds smallest" general purpose spectrometer. The main limitation is the low AMU being around 400 - atomic mass units - which means its best used for lower molecular weight targets like simple gases and beyond but definitely not proteins. Its always been unknown to what degree that limit has been improved if needed or if not improved how it hampered IMSC's progress. Nice to know that a few of these systems are sold every year for industrial uses. Regarding the AMU number, that spin off from a Texas rocket company that developed a much larger miniature mass spectrometer would have a much higher AMU number.
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