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News Blog
May 29, 2019 03:00 PM

Control Microbes with Monitoring of Your Cleanroom

Written by PMS

Microbial Environmental Monitoring

To achieve compliance to regulatory guidance, a microbial monitoring program includes the following components:

  • Active air (room or enclosure environment)
  • Passive air (settle plates)
  • Surfaces (contact plates and swabs)
  • Personnel (gloves and garments)
  • Compressed gases
  • Materials and equipment that could compromise product microbiological quality
  • Cleaning and sanitization process understanding

Cleanroom Limits

EU GMP 2008 and FDA GMP 2004 describe microbial limits for cleanrooms and are a reference for determining process alert and action limits. Keep in mind no microbial sampling plan can prove the absence of contamination even when nothing viable is recovered. A large proportion of microorganisms are viable but unable to grow on the traditional agar media. Microbial monitoring programs do not guarantee sterility of a given batch by collecting counts under defined specifications. However, they do help demonstrate the manufacturing process is in a continuous state of control.

Devices that Monitor Microbes

For the following active air devices, air is drawn through slits in the sampling head using an internal/external vacuum pump. The microorganisms impact on the agar surface in the same pattern as the sampling head slits.

  • Contact/Petri Dish Sieve Impactor: MiniCapt® Mobile Microbial Air Sampler and MiniCapt Remote Microbial Air Sampler. These products have compressed gas applications.
  • Sterilizable Atrium Impactor: BioCapt® Stainless Steel Impactor
  • Single-Use Sterile Atrium Impactor: BioCapt® Single-Use Impactor

The next device is a surface swabbing kit that includes a sterile swab and nutrient broth tube.

  • Surface Monitoring Kit: SurCapt® Microbial Surface Detection Kit

These devices contribute to the overall analysis and control of process microbes.

Download the application note for an in-depth analysis of microbiological control in cleanrooms, including recommendations and discussions on current regulatory practice.

Also see a full list of our advisory services, including cleaning and sanitization good manufacturing practices (GMP).

Filed Under: Particle Knowledge

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