主题：【求助】紫外检测器上的氘灯寿命

只要不影响分析，就不用换

就目前的情形来看，没有哪家科学仪器公司自己生产氘灯的，世界著名的D2生产商我们常接触的也就是日本的滨松制作所，德国还有一家，国内也有代理机构。
D2的寿命一般有三个档次：比如：1000，2000，4000hrs:
滨松制作所的D2灯的规格大致是这样的：
The Hamamatsu L2D2 lamps are highly stable deuterium lamps with a dramatically extended life, developed specifically to meet demands for higher photometric accuracy. The L2D2 lamps employ an innovative ceramic structure optimized for high performance. This results in an extended operating life of 4000 hours (L2-4000 series). In addition, the L2D2 lamps offer twice the stability of conventional lamps and uniform characteristics from lamp to lamp. These features make the L2D2 lamps ideally suited as ultraviolet light sources in applications such as spectrophotometers, HPLC, CE, and pollution monitors, enabling significant improvements in performance characteristics of these photometric instruments. The L2D2 lamp family consists of the L2-2000 series and L2-4000 series lamps. The L2D2 series is available in a large choice of output windows, heaters, and sizes to match your application and power supply.

FEATURES
Long life : 4000hours(L2-4000 Series) , 2000hours(L2-2000 Series)
这个厂家与浙大有光源方面的合资项目：

D2的能量下降可能导致检测灵敏度下降，基线不稳定，有时候仪器会有出错显示，在这种情况下，意欲节省费用，实际上可能会得不偿失。
紫外分光光度计，紫外检测器一般均设有灯能量检测装置或者灯能量曲线测试功能，可以通过这个功能对灯的状态进行定量评价，以决定取舍。

检测仪器应该保持灵敏度啊

关键看灵敏度和工作效率，以前我接触的一家公司上午半天时间用来开机器点灯，这就应该换了

同意楼上的.