Lots of contract manufacturers say they have a "cleanroom".  

At one end of the scale, this is actually just a room that is clean...

At the other end of the scale is a true Certified Cleanroom.  We do our manufacturing in a true Certified Cleanroom.  This requires on-going environmental monitoring and maintenance in concert with outside, independent certification.

Medical devices need to be commercialized using robust cleanroom manufacturing practices, so ask for a Certified Cleanroom and be sure to check the certification records for compliance.

What are you looking for?