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Applied Photophysics Ltd （ 应用光物理公司）生产的型号为 SX20 的停流光谱仪，在国内的清华大学、武汉大学、中山大学、华南农业大学应用多年， 并有很好的高等级的文献引用和发表，数据引用率占可检索到的已发表的文献的百分之八十以上。

停流光谱仪相关说明：

停流（stopped flow）是一种光谱技术，用于研究溶液体系的非常快速的反应的机理，反应的时间一般在0.001秒到0.01秒之间，这个瞬时动力学现象可反映反应的速度、机理、短时间存在过的反应中间体等基础信息。

可选择配置的功能模块为：时间分辨的吸收分析、管阵列检测器、双荧光检测、荧光偏振检测，多通道序列混合系统、淬灭停流检测，及CD圆色停流stopped flow分析系统等。

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.