GB/T 18310.45-2003 is an integral part of the Fiber Optical inspection Interconnect Device and Passive Device Standard, which belongs to the basic test and measurement procedures part 2-45, focusing on the immersion durability test. The standard specifies the conditions, process and evaluation method of the immersion durability test. By simulating the immersion use scenario of the device, test its Stability and structural tolerance in the water environment, and provide technical specifications for ensuring the mass and Reliability of the fiber Optical inspection related devices.