How to Qualify Equipment
Take a new piece of equipment from design through installed, operating, and performing.
What a how-to is not
A how-to is SPEQ’s practitioner method, not a procedure. It does not replace your own SOP, it is not a validated approach, and the judgement calls in it belong to your quality unit.
Equipment qualification is the documented evidence that a piece of equipment is fit for its intended GxP use — designed right, installed right, operating right, and performing right. Modern risk-based commissioning and qualification (ASTM E2500, Annex 15) lets you leverage engineering and vendor activities and focus formal qualification on the quality-critical aspects.
- 1
Define user requirements (URS)
Capture what the equipment must do for your process, including the quality-critical aspects. The URS is the reference point every later qualification traces back to.
- 2
Design Qualification (DQ)
Verify the proposed design meets the URS and GMP expectations before you build or buy. DQ catches design gaps when they are cheap to fix.
- 3
Leverage commissioning and FAT/SAT
Use factory and site acceptance testing and commissioning to verify engineering aspects, and leverage that evidence (per ASTM E2500) so qualification does not re-do it.
- 4
Installation Qualification (IQ)
Confirm the equipment is installed correctly per specification — components, utilities, calibration, documentation. IQ is the static "installed right" check.
- 5
Operational Qualification (OQ)
Confirm the equipment operates as intended across its specified operating range, including alarms, interlocks, and worst-case settings.
- 6
Performance Qualification (PQ)
Confirm the equipment performs consistently under actual (or representative) production conditions and materials — the validation step that proves sustained fit-for-use.
- 7
Report and maintain
Summarise qualification, release the equipment, and maintain the state through calibration, maintenance, change control, and requalification triggers.
- !Re-testing in IQ/OQ what commissioning/FAT already proved, instead of leveraging that evidence.
- !Skipping DQ, so a design gap surfaces expensively at IQ or later.
- !Treating PQ as a formality rather than a demonstration of consistent real-world performance.
- !No requalification triggers, so a modified machine quietly loses its qualified state.
How to Qualify Equipment: frequently asked questions
Common questions on qualify equipment.
What is the difference between DQ, IQ, OQ, and PQ?
DQ verifies the design meets requirements before build; IQ confirms correct installation; OQ confirms operation across the specified range; PQ confirms consistent performance under real production conditions. DQ/IQ/OQ are largely verification; PQ is the validation step.
Can commissioning replace qualification?
Not replace, but feed it. Under ASTM E2500 and Annex 15, well-documented commissioning and vendor testing can be leveraged as evidence so formal qualification focuses on the quality-critical aspects rather than repeating engineering checks.
When does equipment need requalification?
After changes that could affect its qualified state (modifications, relocation, major repairs) and per a periodic review based on risk and criticality. Requalification triggers should be defined up front.
Do I qualify equipment or the process?
Both, at different levels. Equipment qualification (IQ/OQ/PQ) establishes the equipment is fit for use; process validation demonstrates the manufacturing process reliably makes conforming product using that qualified equipment.