Reference for air cleanliness level standards in food cleanrooms

Author:Jason Peng
Cleanroom Engineering Technology Manager of Deiiang Company.

Product R&D Manager of GDC Inc. Cleanroom Equipment Manufacturing Company.

Executive Director of Guangdong Cleanroom Industry Association of China.

Engaged in R&D of related products for 15 years, with rich relevant technical experience
2024-10-20 | Visits:

CleanRoom Classification

The air cleanliness level of food industry cleanrooms is divided into three main levels according to GMP requirements, ensuring precise control over particulate and microbial contamination.

Key Standards

When there are multiple processes in the cleanroom, corresponding cleanliness levels should be adopted for each requirement.
A combination of local work area air purification and whole room air purification is recommended to meet process requirements efficiently.10,000 Class

100,00 Class

100,00 Class food cleanroom

Particles/M³: <350,000 (≥0.5μm)

Microbial Count:

Settling Bacteria: <3
Floating Bacteria: <100

100,000 Class

Particles/M³: <3,500,000 (≥0.5μm)

Microbial Count:

Settling Bacteria: <10
Floating Bacteria: <500

General Level

Particles/M³: No specific requirements

Microbial Count: No specific requirements

Suitable for areas with basic cleanliness requirements

Air Cleanliness Level Standard Table

Cleanliness Level	Particles/M³ (≥0.5μm)	Microbial Count
10,000 Class	<350,000	Settling Bacteria: <3 Floating Bacteria: <100
100,000 Class	<3,500,000	Settling Bacteria: <10 Floating Bacteria: <500
General Level	No requirements	No requirements

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