Clean cabinets and safety cabinets are common equipment in laboratory furniture. Fandi and everyone will introduce the basic knowledge and differences between clean cabinets and biological cabinets.
Clean cabinets, also known as ultra-clean benches, are widely used in biology, medicine, health, electronics, precision instruments, meters and other industries. Provides a sterile, dust-free and clean operating environment. The structure and working principle of the clean cabinet: the main components include the cabinet body, operation table, front panel, fan, static pressure box, filter, lighting, germicidal lamp, etc. The outside air passes through the fan area, and the working area is under positive pressure to ensure that it is not contaminated by outside air. The clean cabinet can be divided into horizontal laminar flow and vertical laminar flow according to the gas flow direction. The specifications are single, double, single, and double , Can also be used in series.
The biological safety cabinets in laboratory equipment are widely used in colleges, scientific research institutes, pharmaceutical factories, health and epidemic prevention, etc., and are the main clean equipment for microbial experiment operation, which can prevent the proliferation of toxic and harmful suspended particles and protect the experiment. The safety of the operator and the environment during the process can also protect the sample from contamination during the process. Level of biological safety cabinet: Level 1: Equivalent to the function of a detox cabinet with a filter to protect the operator and the environment. Level 2: Protect operator, environment and samples at the same time, suitable for samples of biosafety level 1, 2, and 3. Level 3: Protect the operator, environment and samples at the same time, the operation environment is completely isolated from the external environment, with a glove box, full-tight operation, suitable for the experimental operation of high-risk samples.
The main difference between biological safety cabinets and clean cabinets: biological safety cabinets are mainly to protect operators and the environment, and can also protect samples. The structure is more complex than clean cabinets. The gas in the operating area is negatively pressured and discharged after purification. The clean cabinets protect the operating samples. Protect the operator and the environment. The positive pressure of the gas in the operating area, and the gas outside the operating area is directly discharged.