Oil content of compressed air

The oil content standard of compressed air usually varies according to different industries and applications. Here are some common criteria and situations:

1. international standards

1. ISO 8573-1 Part 2:
   • the ISO 8573 standard divides the oil in compressed air into several grades, which have clear regulations on the oil content. For example, the CLASS 0 class is generally considered an oil-free class, requiring an oil content of less than 0.01 mg/m & sup3;. CLASS 1 grade oil content also does not exceed 0.01 mg/m & sup3;(There may be slight differences with CLASS 0, please refer to the original standard text for details), while CLASS 2 and CLASS 3 allow oil content not to exceed 0.1 mg/m & sup3; And 1 mg/m & sup3;.
   • These standards are widely used in industries that require high-quality compressed air, such as semiconductor manufacturing.
2. ASTM D6786-02:
   • ASTM D6786-02 standards determine the content of oil, particularly liquid and gaseous hydrocarbon oils, in compressed air by gas chromatography. The method provides an accurate means of oil content determination and is suitable for a variety of application scenarios.

2. industry-specific standards

1. pharmaceutical Industry:
   • in the pharmaceutical industry, GMP (Good Manufacturing Practice) standards and the pharmacopoeia of some countries have strict requirements on the oil content of compressed air. It is usually required that the oil content of compressed air does not exceed 0.1 mg/m & sup3; to ensure the quality and safety of pharmaceutical production.
2. Other Industries:
   • in industries that require high-quality air resources, such as food processing and beverage production, the oil content standard of compressed air is usually more stringent, but the specific value may vary according to industry standards and specific requirements.

Considerations in Practical Application of 3.

• In practical applications, in addition to meeting the above criteria, it is also necessary to consider the design, maintenance and use of compressed air systems. For example, regular replacement of air filters, the use of high-quality lubricants and regular maintenance of air compressors can effectively reduce the oil content in compressed air.

4. detection method

• the detection methods of oil content in compressed air include gas chromatography, infrared photometry and other methods. These methods can provide accurate oil content determination results to help users monitor and maintain the quality of compressed air systems.

To sum up, the oil content standard of compressed air varies from industry to industry and application field, but there are usually clear regulations and requirements. In practical applications, it is necessary to select the appropriate compressed air system and maintenance method according to specific needs and standards.