Plankton sampler for air cleanliness detection

The planktonic bacteria sampler is SUITABLE FOR detecting air microorganism IN GMP FACTORY, DAIRY factory, hospital OPERATING ROOM, biological clean room, fermentation industry and other clean room and aseptic environment, as well as for sampling study of air microorganism in related research and teaching departments. As a kind of commonly used testing instrument, it is able to place the clean indoor microorganism concentration reflected truly, a large amount of sampling and the advantages of stable performance, easy to operate, it according to the principle of particle impact and speed sampling theory design, sample directly, sampling mouth, wind speed and clean indoor wind speed can accurately reflect the clean indoor microbial concentration, sampling, The air with dust bacteria passes through the micropores at high speed and is hit on the surface of AGAR in the Petri dish. During the culture process, these living microorganisms undergo dynamic rehydration process and grow at high speed, so as to get the results quickly.



Food safety, medical safety and other matters related to the vital interests of people's livelihood are getting more and more attention, so the production enterprises and public institutions have high requirements. In the manufacturing enterprise standard more strict is the pharmaceutical enterprise "Drug production quality management Practice", referred to as GMP standard. Among them, the production workshop air cleanliness in the biological cleanliness requirements, requirements for the detection of plankton and sedimentation of bacteria items. Other food factories, infant formula dairy plant, hospital operating room, fermentation industry clean room and other slowly from a single detection of sedimentation bacteria to strict bidirectional simultaneous detection of plankton and sedimentation bacteria GMP standards close to.



We know that bacteria do not exist alone in the air, often attached to the surface of dust particles many times larger than themselves, so the bacteria suspended in the air or settled on the ground. In fact, it is the biological particles carrying bacteria. Therefore, the relationship between planktons and settling bacteria is the relationship between planktons and settling biological particles. Although the concentration of particles (including biological particles) in the natural atmosphere varies with time and place, the particle size distribution is generally the same. Therefore, it can be considered that there is a relationship between the planktonic bacteria and the sedimentation bacteria in the natural atmosphere without wind, and the concentration of the planktonic bacteria can be estimated by the sedimentation bacteria value. However, in the biological clean room, the particle size distribution of bacterium-bearing particles is different from the distribution in the natural atmosphere, and there is the influence of the air supply, so the relationship between planktonic bacteria and settling bacteria must be different from that in the natural atmosphere.



The internal conditions of different biological clean rooms are different, and the relationship between planktonic bacteria and settling bacteria is impossible to be consistent. For pharmaceutical biological clean workshop, the production features not only make it different from other USES of biological clean room, and the production of different types of drugs, clean workshop, the process each are not identical, so can't continue to use general biological cleanroom settlement of planktonic bacteria and fungi to reflect the relationship between two relations within the pharmaceutical biological clean workshop.



Through the sampling experiment data of plankton and sedimentation reduction bacteria in the workshop by the plankton sampler, it can be concluded that:



Different types of biological pharmaceutical workshop, clean the planktonic bacteria concentration and sedimentation colony count with their specific production process, the relationship between airflow organization form, air changes, such as personnel situation factors, and the difference is very big, it is difficult to find out the rule of commonality, "code for design of the GMP and the relationship between control indicators reflected that.

Therefore, in a general sense, because the relationship between the concentration of plankton and the number of settling colonies is uncertain, the amount of settling bacteria in a pharmaceutical workshop can only indicate the surface microbial contamination. The quantity of planktonic bacteria reflects the concentration of biological particles in the air of the workshop. In order to fully reflect the degree of microbial pollution in the workshop, it is necessary to detect both sedimentation bacteria and plankton. Therefore, for food factory, dairy factory, operating room, fermentation industry clean room, for air cleanliness detection, it is necessary to detect both plankton and sedimentation bacteria.