| 摘要 |
PURPOSE:To decrease analytical errors by using a transparent capillary for a liquid injecting tube, disposing light emitting element parts and photodetect element arrays facing the same in two upper and lower positions and processing the signals thereof. CONSTITUTION:A plunger 5 is moved upward by the rotation of an eccentric cam 9, to suck prescribed sample liquid from a sample vessel 1 and to fill the sample liquid in a micro-injector 4 and a switching valve 3. After the valve 3 is rotated 90 deg. clockwise, the plunger 5 is forced downward gradually and is once stopped near the prescribed position. The volume of the air containing part in the upper part of a sample injecting tube 6 of a synthetic resin is changed slightly by means of a screw device or the like provided in the upper part of the tube 6 until the bottom end of the sample liquid 8 coincides with the reference plane 14b of a photodetector 11. Here, the liquid level 10a of a liquid level detector 10 is detected with a linear array 10b and a signal processing part 12, whereby the volume of the introduced sample liquid is determined accurately. Thus analytical errors are decreased. |
