2026-04-14Views：
Analysis of Minimum Standard for Oil Content of Air Compressor in Food Industry
in food processing, compressed air directly contacts the product (e. g. packaging and sealing, material handling) or indirectly affects the production environment (e. g. clean room air supply). Oil content there are strict restrictions. The international general standard is ISO 8573-1 its core requirements are as follows:
| Grade | maximum allowable oil content(mg/m³) | applicable Scenarios |
|---|---|---|
| Class 0 | ≤ 0.01 | direct contact with food(e. g. filling, package sealing) |
| Class 1 | ≤ 0.1 | non-direct contact but high cleanliness requirements (e. g. laboratories, pharmaceutical production) |
| Class 2-5 | 0.1 to 10 | general industrial scenarios (e. g. pneumatic tool drive) |
the food industry usually requires ≥ Class 1, and the direct contact link needs to reach Class 0.
FDA Standards(United States):21 CFR Part 110 stipulates that compressed air in contact with food must be treated through an oil-free or high-efficiency filtration system.
EHEDG Guide(Europe): It is recommended to use an oil-free air compressor for food processing, or a combination of activated carbon oil mist filters.
3-A Health Standard dairy products, beverage industry equipment to meet Class 0 oil-free requirements.
oil-free air compressor: Use water lubrication or self-lubricating materials (such as ceramic bearings) to avoid oil pollution from the source.
multistage filtration: Equipped with activated carbon filter oil mist separator, secondary purification of compressed air.
Regular inspection: Verify oil content compliance on a quarterly basis using an ISO 8573-1 tester.
product contamination oil residues may cause food safety accidents (e. g., Hashate, chemical contamination).
Regulatory penalties: Enterprises that do not meet the standards may face the loss of shutdown rectification or recall.
Conclusion: The oil content of the air compressor in the food industry must meet at least ISO 8573-1 Class 1, direct contact link suggestion Class 0. Regular inspection through oil-free multi-stage filtration ensures compliance and reduces quality risks.
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