Liquid separation and sample adding device

Abstract

The invention discloses a liquid separation and sample adding device for liquid separation and sample adding operations in a biosafety cabinet. The liquid separation and sample adding device comprises: a liquid storage pipe, which is used for storing pretreatment liquid; a sample adding rod, one end of which is provided with a sample adding piston matched with the liquid storage pipe and is movable in the sample adding pipe; a liquid suction pipe, which communicates with the liquid storage pipe and adds a sample into the liquid storage pipe; and a sample adding pipe, which communicates with the liquid storage pipe, and adds the pretreatment liquid in the liquid storage pipe into a sample container. According to a technical scheme of the invention, the liquid separation and sample adding device can integrates two functions of liquid separation and sample adding, omits a previous sample sucking link, simplifies operation steps, eliminates the possibility of cross contamination, improvesthe accuracy of experimental results, realizes functions of liquid separation and continuous sample adding of quantitative liquid, can operate different liquid adding amounts between different samples, and greatly improves the working efficiency.

Description

technical field [0001] The invention relates to the field of experimental equipment, in particular to a liquid separator and sampler. Background technique [0002] Biosafety cabinets are commonly used equipment in medical laboratories. Its function is to prevent aerosol from escaping when operating samples containing potential pathogenic microorganisms or other risk factors. When using biosafety cabinets in clinical microbiology rooms to operate clinical sputum samples, pretreatment is required. Liquid treatment of sputum. [0003] There are four ways to add samples of traditional pretreatment solution: (1) Use purchased or self-prepared small portion of treatment solution. Due to the need for aseptic operation, the self-prepared small portion of treatment solution needs to be used after high pressure, sterilization and stoppering; (2) Use the treatment liquid bottle to pour the sample or use the bottle washing cap to add the sample, but the process of pouring the sample ca...

AI Technical Summary

Problems solved by technology

[0004] In view of the defects of the prior art, the technical solution of the present invention is to solve the problem that the existing pretreatment liquid adding method is cumbersome, the amount of the sample is not easy to control, the liquid is easy to spill, and it is easy to cause the pollution of the pretreatment. Technical problems that affect the accuracy of experimental results

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