A measuring cell for receiving a blood sample is designed such that it can be transilluminated with a light source. According to these production processes, the by-production of amorphous solids of 5\u2032-GMP2Na which adversely affect separability of the crystals concerned, is inhibited, and therefore, such mixed crystals having a good separability without contamination of such amorphous solids, can be produced in a high productivity. The FDDL sits between network client applications and the switch device driver in order to provide a uniform interface to the switch device driver. A ground electrode has an attachment end fixed by a weld joint to the distal end of the shell and a free end extending from the distal end to provide a spark gap. For a copy job, copy data outputted from IIT is converted into optical signals, which enter the light distributing device, and are transmitted to the IOT of the emission side. Advantageously, the indicating member is retained in an indicating position by a press fit between the indicating member and fitting body.