| 摘要 |
A bypass valve allows fast and reliable sequential transfer of samples from a 96-well plate to a flow-through nuclear magnetic resonance (NMR) probe of an NMR spectrometer. The bypass valve has three ports: an infect port connected to a first input of the flow-through probe; a load port connected to a needle capable of drawing the samples from the 96-well plate through the needle and the bypass valve into the holding loop. The position of the bypass valve is switched, and the sample and a dose of push solvent are pushed into the flow-through probe through the bypass valve. After NMR measurements are performed on the sample, the sample is drawn into the holding loop through the bypass valve, at the same time as air is flushed through the probe. The position of the bypass valve is again switched, and the sample is pushed out through the needle. |
