This paper provides a detailed analysis of the relevant standards for compressed air used in direct contact applications, covering key use cases such as the cleaning of precision video equipment and food processing. It highlights the control requirements…
Compressed Air Standard
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What Chinese national standards must compressed air used in direct contact with food comply with?
In food production, the quality of compressed air that comes into direct contact with food is of paramount importance. This article analyzes the core requirements for food-grade compressed air as specified in China’s national standards, covering critical parameters…
This paper provides a detailed analysis of the physical meanings and conversion relationships between the units ppm and mg/Nm³ for residual oil content in compressed air. By defining the density of air under standard conditions, it presents accurate…
The Chinese Pharmacopoeia classifies compressed air as a critical process gas, stipulating that its microbiological, oil, particulate, and moisture levels must meet the corresponding grades specified in ISO 8573‑1, and requires its inclusion in pharmaceutical companies’ GMP validation…
This article provides a detailed explanation of the core definition of air compressor cleanliness, the structure of the ISO 8573 standard, and the classification limits and control methods for the three major contaminants—particulates, moisture, and oil—while emphasizing the…
The oil content in air separation cooling box directly affects the safety of oxygen system. According to GB/T 13277.1-2018 and ISO 8573-1:2010 standards, this paper defines the oil content limit (≤ 0.01 mg/m³) and its application requirements in…
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