Inspection method: The operators whose eyesight meets the requirements of Pharmacopoeia standards will check the contents of the injection one by one in a dark room with a photodetector under a certain light intensity.
Disadvantages: the eyesight of the lamp inspectors is different, the test results are different, and the quality is uneven; The operator's eyes are prone to fatigue, false detection or missed detection; Working for a long time is harmful to the operator's eyes, and the employees are under great ideological pressure, which is easy to cause quality fluctuation and missed inspection; The production efficiency is low, and each person checks about 1500 ~ 2000 pieces per hour, which is the capacity bottleneck of mass production.