To all: First, thanks for the many informative replies. Nearly everyone said that vibration is very unlikely (or, according to Mario, "has no chance") to play an important role. There were both empirical examples of this, such as strong nearby vibration and no effect on sorting as well as theoretical statements to the effect that the frequency of ambient vibration is far below that of drop generation. In addition, many cited that sorters are on stable optical benches. Sorters are located on many different floors of old and new buildings. Interestingly, what was emphasized was: 1) Temperature control. Must be kept constant and predictable. 2) Isolation from noise sources such as coolers and pressure generation, which should be situated outside the sorter room. In this regard, proximity to chiller systems or the ability to put them on the roof might be good. 3) Ability to darken the room. 4) Many operators wanted a good view! I do think points 1 and 2 above are probably the most important considerations. Thanks to the survey respondents, we were able to avoid having our architects site the facility in an inconvenient and undesirable place! I have all replies saved, and if anyone wants to see any, just let me know directly and I'll send them. The List works.... thanks, Mark -- Mark Shlomchik, MD, PhD Associate Professor of Laboratory Medicine and Immunobiology Yale University School of Medicine 203-688-2089 203-688-2748 (fax) mark.shlomchik@yale.edu
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