| 摘要 |
1526811 Automatic analysis; sample transfer system BECKMAN INSTRUMENTS Inc 9 Sept 1975 [9 Sept 1974] 37049/75 Heading G1B A method of picking up and dispensing liquid sample material for analysis comprises inserting a sample pick-up probe into the material and drawing a quantity of the sample into the probe, inserting the probe into a reagent chemically reactive with the sample material, retaining the probe in the reagent for a period of time sufficient for the reagent to consume any residue of sample material adherent to the outside of the probe and subsequently ejecting sample material from the probe into the reagent for analysis. The sample pump 35, Fig. 6, may be used to draw sample into probe 14, operation of the device being such that water fills the upper end of probe 14, and line 15, and probe 14 after the intake stroke of the pump 35 holds (from the tip inwardly) an air bubble, the sample segment, an air bubble and the water column. Reagent may be fed to cell 21, Fig. 3, through line 29 and the sample-reagent mixture is stirred using magnetic stirrer 26. After the analytical measurement using probe 23 the cell is drained through line 30 and the probe is rinsed in situ with wash water. |
