Cleanroom Classification (PIC/S)

The Pharmaceutical Inspection Co-operation Scheme (PIC/S) provides cleanroom classifications for use in the pharmaceutical industry. These classifications are typically applied to environments where aseptic processing and the manufacturing of sterile pharmaceutical products take place. PIC/S cleanroom classifications are crucial for maintaining the highest standards of cleanliness and microbiological control to ensure the safety and quality of pharmaceutical products. Here are the cleanroom classifications as per PIC/S:

1. Grade A:

 Airborne Particle Count: ≤3,520 particles per cubic meter (0.5 µm and larger).

 Microbial Contamination: No more than one colony-forming unit (CFU) per cubic meter.

 Purpose: Grade A cleanrooms are the most critical areas and are typically used for aseptic processing of sterile pharmaceutical products, such as filling vials or ampoules with injectable medications.

2. Grade B:

 Airborne Particle Count: ≤3,520 particles per cubic meter (0.5 µm and larger).

 Microbial Contamination: No specific limit provided.

 Purpose: Grade B cleanrooms are used for aseptic processing and manufacturing activities but may involve less critical tasks than Grade A. They are often found in areas adjacent to Grade A zones.

3. Grade C:

 Airborne Particle Count: ≤352,000 particles per cubic meter (0.5 µm and larger).

 Microbial Contamination: ≤5 CFU per cubic meter.

 Purpose: Grade C cleanrooms are used for less critical sterile manufacturing and compounding activities. They often serve as transitional areas between Grade B and Grade D zones.

4. Grade D:

 Airborne Particle Count: ≤3,520,000 particles per cubic meter (0.5 µm and larger).

 Microbial Contamination: ≤50 CFU per cubic meter.

 Purpose: Grade D cleanrooms are less stringent in terms of cleanliness and are used for activities with a lower risk of contamination. These areas may include corridors, change rooms, and some storage areas.

It's important to note that the PIC/S cleanroom classifications are focused on maintaining cleanliness and microbiological control to prevent contamination of sterile pharmaceutical products. The classifications are designed to ensure that products are manufactured in a controlled and safe environment, and they are aligned with good manufacturing practices (GMP) and regulatory requirements in the pharmaceutical industry.

Pharmaceutical manufacturers must adhere to the appropriate cleanroom classification based on their specific processes and product requirements to ensure product quality and regulatory compliance. Additionally, regular monitoring, validation, and adherence to strict procedures and protocols are essential in maintaining the cleanliness and integrity of cleanroom environments in pharmaceutical facilities.