ION METER

• Main Author: TAMAI TETSUO
• Format: Patent
• Language: English
• Published: 27.02.1992
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

PURPOSE:To automatically switch measurement modes and to prevent the generation of a carry-over by automatically deciding the kind of a sample. CONSTITUTION:The absorbance of the sample is measured by a colorimeter 8 if the sample 2 is sucked via a sample introducing pipe 6 into the meter. The absorbance is preset at the wavelength to measure the protein in the sample and, therefore, a sample measuring section 22 decides whether the sample is blood or urine from the concn. quantity of the protein in accordance with the measurement result of the colorimeter 8. A selector valve 10 is set at the sample introducing pipe 12 side to introduce the sample directly to an ion electrode 4 via a control circuit 24 if the sample is the blood. On the other hand, the selector valve 10 is selected to the sample introducing pipe 14 side and a pump 20 is operated to introduce a diluting liquid 18 into the meter to dilute the sample with a mixing coil 16 when the sample is decided to be urine; thereafter, the sample is introduced to the ion electrode 4. The urine and the blood, etc., are arbitrarily and automatically measured and the generation of the carry-over is obviated.