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Applied Photophysics Ltd （ 應用光物理公司）
生產(chǎn)的型號為 SX20 的停流 光譜儀，在國內(nèi)的清華大學、武漢大學、中山大學、華南農(nóng)業(yè)大學應用多年， 并有很好的高等級的文獻引用和發(fā)表，數(shù)據(jù)引用率占可檢索到的已發(fā)表的文獻的百分之八十以上。

停流（stopped flow）是一種光譜技術，用于研究溶液體系的非常快速的反應的機理，反應的時間一般在0.001秒到0.01秒之間，這個瞬時動力學現(xiàn)象可反映反應的速度、機理、短時間存在過的反應中間體等基礎信息。

The SX20 is the latest in the SX range of stopped-flow reaction analysers from Applied Photophysics and is used to study transient and pre-steady-state kinetics of fast, liquid-phase reactions. The SX range has, since its introduction over 15 years ago, established itself as the first choice of those involved in stopped-flow kinetic research. The SX20 and its predecessors offer unrivalled performance, as well as a host of upgrade opportunities for the detailed investigation of chemical and biochemical reaction mechanisms