The key to determining the sensitivity of the production process to
particles is to consider the tolerance of your product, process,
and regulations towards particles. This requires a comprehensive
evaluation from three dimensions: product characteristics, process
requirements, and compliance standards.
1. Look at product features
Firstly, clarify the sensitivity of your product to particles. For
example, in the pharmaceutical industry, injections, implantable
medical devices, or sterile drugs have extremely low tolerance for
particles, and any micron sized particles may directly affect the
safety and effectiveness of the product. However, some ordinary raw
materials or low-risk products have relatively relaxed requirements
for particles.
2. Check the process requirements
Secondly, analyze whether your production process itself is prone
to producing particles, and whether these particles will affect
product quality. For example, in chip manufacturing or precision
optical component production, submicron sized particles may cause
product defects. You need to evaluate the equipment, materials,
operations, and other aspects of the production process to
determine which are potential sources of particulate pollution.
3. Check compliance standards
Finally, it is necessary to refer to relevant industry regulations
and standards. For example, GMP has clear requirements for the
concentration of suspended particles in clean areas, and the
particle control standards in Class A areas (high-risk operations)
are much higher than those in Class D areas (low-risk operations).
You need to ensure that your production process and cleanroom level
meet these regulatory requirements.
How to match?
Based on the above analysis, you can match the product
characteristics and process requirements with the cleanroom level.
For example, sterile pharmaceutical production that is highly
sensitive to particles typically requires Class A or Class B clean
environments; For ordinary food packaging with relatively relaxed
requirements for particles, a D-level environment may be
sufficient. Meanwhile, choose a suitable particle detection method
(such as photoresist or microscopic counting) to monitor and verify
your cleanliness level.
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