物理化学实验中经常要在恒温条件下进行数据测量，其中一部分可使用简易恒温槽或超级恒温槽，但仍有一部分因缺乏必要的装置无法实现恒温致使测量数据因室温不同而异，难同标准数据比较，极大影响实验效果和测量精度。下面介绍改进的旋光仪样品管（图１），供教学和科研参... Often in physical and chemical experiments to be carried out under constant temperature data measurement, some of them can use a simple thermostat or super-thermostatic bath, but there are still some due to the lack of necessary equipment can not be achieved due to constant temperature measurement data vary with room temperature, Data comparison, greatly affect the experimental results and measurement accuracy. The following describes the improved polarimeter sample tube (Figure 1), for teaching and research ...