Process for injecting a minute volume of a solution and an apparatus therefor
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United States of America Patent
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Mar 7, 1989
Grant Date -
N/A
app pub date -
Oct 14, 1986
filing date -
Oct 15, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Process for injecting a minute volume of a solution from a nozzle device by positive pressure applied from a source of compressed air with or without positive pressure applied in parallel from a cylinder device, comprising applying the positive pressure from the compressed air source at least in a final period of injection. The process enables in injecting minute volumes of solution to remarkably decrease the injection error due to a small fraction of solution remaining at the lower end of the nozzle and can be applied to advantage to those apparatus for analyses and measurements which strictly require precision in injection.
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