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About the filter efficiency classes specified in EN1822

Filter cartridges can be divided into three grades: E-grade, H-grade, and U-grade, based on their performance (mainly efficiency and penetration rate). The filter efficiency grade can be classified as follows, based on the MPPS efficiency and penetration rate of the filter cartridge, and the efficiency and penetration rate of the filter in a non-electrostatic state.

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Domestic food industry requirements for GMP cleanrooms

While food processing represents a small segment of the cleanroom industry, it is a steadily growing one. With overall spending by food plants increasing at a rate of 6%, cleanroom spending is growing faster than capital expenditures, and is projected to increase at 8% annually for the next several years.

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Key points for the design of a new GMP production workshop and the selection of production equipment

How to build a GMP-compliant production workshop: The question of how to build a GMP-compliant production workshop is quite complex, because the extracted products are diverse and the production processes have different requirements. Based on industrial production practices, the following aspects should be considered.

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Cleanroom cleanliness classification for various industries

■ USA Federal Standard 209E (1992)

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Precautions for using a weighing hood (weighing chamber)

The functions of weighing hoods are well-known, but sometimes there are side effects. A company, during its production process, weighed materials under a weighing hood. A batch of 80 kg of materials was withdrawn from the warehouse and weighed in four times, 20 kg each time. After weighing, it was found that the total weight was 1 kg less. The electronic scale has high precision; if it is a weighing error, it is unbelievable.

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About the characteristics of laminar flow ceiling lighting

Currently, laminar flow ceiling diffusers in the industry only meet functional requirements and are installed in the center of the operating room. Therefore, the operating room lighting can only be arranged around the laminar flow ceiling diffuser. Although the purification lamp panel has a mixing effect, the lighting in the center still has a certain degree of attenuation. The old laminar flow ceiling diffuser installed in large operating rooms has the disadvantage of uneven illuminance.

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Laminar flow bed/Laminar flow bed

Laminar flow bed (mobile laminar flow disinfection hood) constructs an effective and mobile clean space, effectively reducing the infection rate of diseases within the space. Protects susceptible populations. Widely used in hematology, oncology, pediatrics, and burn departments, etc. It can perform indoor air disinfection in the presence of people and is an ideal local air purification and disinfection device for hospital beds. The mobile laminar flow disinfection hood consists of a high-efficiency air filtration system, a fan power system, a noise reduction system, and an operation control system.

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