Standardise their sampling procedures and comply with ISO 1893
Microbial surface sampling using contact plates (e.g. RODAC) is an important part of environmental monitoring in diverse industries. ISO 1893 provides some guidance on how to implement this. 2 aspects are important to sample horizontal surfaces:
- The pressure/weight on the surface needs to be standardised
- The sampling time needs to be standardised to 10 seconds
Surface sampling is an important part of viable particle monitoring within the GMP Annex 1 guideline for production of sterile medicines.