Glossary: D

D value

De-centralised air handling

Through a de-centralised air handling approach, the same results can be delivered as with…

Decontamination

A process that eliminates viable bioburden via use of chemical agents. Source: GMP Draft…

Deionised water (DI water of DIW)

Deionized water is water that has had almost all of its mineral ions removed, however…

Delta (∆) column of particle counts

Particle counters display readings in two columns: differential (depicted by ∆ delta) and cumulative…

Depyrogenation

A process used to destroy or remove pyrogens (e.g. endotoxin). Source: GMP Draft Annex…

Dew point

Dew point (dp) is the temperature that a volume of air reaches when it…

Dewpoint vs humidity

Dewpoint (dp) is the temperature that a volume of air reaches when it becomes…

Differential particle counts

Particle counters display readings in two columns: differential (depicted by ∆ delta) and cumulative…

Disinfection

“The process by which surface bioburden is reduced to a safe level or eliminated.…

Door interlock

Door interlock or interlocked doors support good cleanroom entry and exit practices by only…

DOP Testing

DQ – Design Qualification

Design Qualification (DQ) is the documented verification that the proposed design of the facilities,…