Biological reagents (various lipid reagents, enzyme solutions, buffer solutions) and biological samples (blood, urine, saliva) are common processing liquids in molecular diagnostic experiments. High precision liquid processing (such as transfer, dilution, mixing, etc.) for biological reagents or biological samples with different characteristics is the most basic and frequent experimental operation in the process of molecular diagnostic experiments. With the increasing demand for sample processing throughput and reliability of detection results in clinical testing, automated molecular diagnostic equipment based on high-throughput trace liquid processing technology is an inevitable trend in the development of clinical testing automation.
At present, fully automatic pipetting workstations have been widely used in biological laboratories and clinical testing. In these fields, there are significant differences in the characteristics of the liquids to be processed (density, viscosity, volatility, corrosiveness, etc.), and automated micro pipetting operations are often required, such as the preparation of PCR reaction solutions requiring 1-50L pipetting operations; The required liquid volume span is large, for example, the distribution volume of some enzyme solutions is between 1-10L, while the distribution volume range of cleaning solutions is between 1-1000L; The required processing flux is relatively high, and it is generally required to use a 96 well plate or a 384 well plate as the operating container. In response to the above requirements, many scholars and corporate groups at home and abroad have continuously invested a large amount of manpower and financial resources to develop corresponding technologies or products, and have achieved significant research results.