2results about How to "High injection precision" patented technology

The application provides a detection chip assembly tool, a liquid injection device, a method, electronic equipment and a medium. The tool is used for installation in a vacuum pumping assembly. The tool comprises a base used for installation on a detection chip. The base is respectively provided with a reaction cavity covering the detection chip and a fluid channel communicated with the reaction cavity. The base is further provided with a liquid inlet groove structure communicated with the fluid channel and used for injection of a buffer solution. When the detection chip is filled with the buffer solution, the vacuum pumping assembly is started to exhaust air in the detection chip assembly tool. Pressure relief is performed after the vacuum pumping assembly is pumped. Under the action of negative pressure, the buffer solution in the liquid inlet groove structure flows into the reaction cavity along the fluid channel to fill the detection chip. The application effectively uses the mode of first pumping and then automatic liquid injection, avoids the generation of gas-liquid mixture, and does not need manual operation of a liquid transfer gun, thereby improving the liquid injection efficiency and precision of the detection chip.

The utility model belongs to the field of detection devices for aquatic products, and discloses an aquatic veterinary drug residue detection device which comprises a device shell, a sampling device, a degassing device, a pressurizing device, a chromatographic column, a detector and a data acquisition unit are arranged in the device shell, a sample placing groove is formed in one side of the device shell, and the data acquisition unit is arranged in the sample placing groove. A sample containing groove is formed in the device shell, a sample constant-volume bottle is arranged at the sample containing groove and connected with the internal structure of the device shell through a sampling device, a degassing device is arranged at the downstream end of the sampling device, a pressurizing device is arranged at the downstream end of the degassing device, and a chromatographic column, a detector and a data collector are arranged at the downstream end of the pressurizing device. The detection device is compact and reasonable in structural design, can detect macrolide drugs, olaquindox, malachite green, crystal violet, oxolinic acid and other residues in aquatic products through liquid chromatography, can qualitatively and quantitatively detect veterinary drug residues, and is high in detection precision and high in detection result accuracy.