LimsPulse
Lab glossary

Cleanroom grades (A, B, C, D)

The four levels of cleanliness defined in EU GMP Annex 1, from Grade A (critical aseptic zone) to Grade D (least critical), each with particle and microbial limits.

  • Also: Annex 1 grades
  • Also: cleanroom classification

Browse the Equipment Explorer and Test Method Finder to see this term in context.