2026-04-13Views：
Quality standards for sterile air for fermentation are essential to ensure a smooth fermentation process. The following is a detailed analysis of the quality standards for sterile air for fermentation:
microbial indicators:
the total number of microorganisms in the air should be less than or equal to N/m3 (the specific value can be set according to different application fields, but the requirements are usually very low to ensure a sterile environment for the fermentation process).
There shall be no pathogenic microorganisms or other microorganisms that endanger the fermentation process in the air.
Particulate matter index:
the number of particles with a diameter greater than 5 microns in the air should be less than or equal to N/m3 (the specific value can be set according to different applications).
The number of particles with a diameter greater than 10 microns in the air should be less than or equal to N/m3 (similarly, the specific value should be set according to the application field).
Chemical pollutant indicators:
the air must not contain chemicals harmful to the fermentation process, such as organic solvents, heavy metals, etc.
The oxygen concentration in the air should be within the appropriate range to maintain the normal fermentation process.
Physical parameters:
sterile air for fermentation needs to be provided continuously and maintained at a certain flow rate to ensure the stability of the fermentation process.
The pressure of air is usually required to be between 0.2 and 0.4 MPa to ensure the stable transmission of air in the pipeline.
The temperature of the air entering the fermenter may be 10-30°C higher than the culture temperature, which facilitates the fermentation process.
The relative humidity of the air before entering the filter should be ≤ 70% to prevent the filter from being affected by moisture.
Cleanliness requirements:
sterile air for fermentation is usually required to reach cleanliness level 100, which means that the maximum allowable number of dust particles (≥ 0.5 μm) per cubic meter of air is 3500, and the maximum allowable number of microorganisms is 5 floating bacteria/m & sup3; And 1 settling bacteria/m & sup3;.
Monitoring and management:
appropriate monitoring methods should be used, such as sterile sampling, culture medium, isolation and identification, particle counter, etc., to regularly detect the indicators of microorganisms, particles and chemical pollutants in sterile air.
Appropriate process control measures should be taken during the fermentation process, such as the use of high-efficiency filters, maintaining good cleanliness, etc., to reduce the content of microorganisms and particulate matter in the air.
Periodically conduct sterile air quality testing and record test results. If it is found that the quality of sterile air does not meet the requirements, corrective measures should be taken immediately and its quality should be retested.
Please note that the above criteria may be adjusted depending on the specific application, fermentation process and equipment conditions. In actual operation, corresponding quality standards should be formulated and implemented according to specific conditions.
When discussing whether the screw air compressor can reach 13 pressures (I. e., about 1.3MPa or 13bar), we have to mention the water-lubricated screw air compressor produced by Shanghai Granklin Group. As a well-known brand in the industry, Granklin Group has been committed to air compressor technology.
When choosing an oil-free air compressor and an oil-free air compressor, there are many factors to consider, including usage scenarios, air quality requirements, energy efficiency, maintenance costs, price, and long-term operating costs. Here are some detailed guidelines to help you make an informed choice: 1.
There is no absolute answer to the question of whether the compressor is oil-free or oil-free, because it depends on the specific application scenario and needs. The following are the advantages and disadvantages of oil-free and oil-free compressors for your reference: Advantages of oil-free compressors: Environmental protection: Because they are not used
The main difference between oil-free compressors and ordinary air compressors is their working method and lubrication system. The following is the specific difference between the two: lubrication method: oil-free compressor: this type of compressor is designed to avoid the use of oil as a lubricant
In the pharmaceutical industry, compressed air quality is critical to pharmaceutical production. Clean, oil-free compressed air is the key process source gas to ensure the quality of drugs. The water-lubricated oil-free air compressor produced by Shanghai Granklin Group, with its unique advantages and excellent performance, has been
In industrial production, screw air compressor is widely used for its high efficiency and stability. In particular, the water-lubricated screw air compressor produced by Shanghai Granklin Group combines the advantages of frequency conversion technology and water lubrication, which is both efficient and environmentally friendly. However, no matter how much the equipment
The synthesis is as follows: 1. When the power is cut off and stopped, in order to prevent the compressor from starting under pressure, the power-off handle of the pressure switch should be pulled when the power is turned on again to exhaust the air in the pipeline and restart the compressor. 2. The user must set the compressor protection grounding wire to ensure the compressor
the role of air compressor in construction site analysis 1. core power source: drive pneumatic tools 1. typical pneumatic equipment support drilling and cutting: air compressor for pneumatic drill, pneumatic hammer and other tools to provide high pressure air, make it in concrete, rock and other hard materials
Screw air compressor, per cubic meter of compressed gas inside, the oil content is about three to five milligrams. Although this value looks very small, if the gas consumption is very large and accumulates over time, a lot of oil will still be accumulated in the pipelines and gas-using equipment.
The oil content of compressed air ≤ 0.01 mg/m & sup3; is not micro-oil, but belongs to the international standard ISO 8573-1 Class 0 (Class 0) standard, which is usually regarded as equivalent to the oil content of oil-free compressed air. The following is a detailed explanation of this conclusion: the 1. State
2018 Granklin Group. All rights reserved 沪ICP备18000439号-2
