New cleanroom builds
Greenfield or refurbished classified areas requiring URS, design review, and start-up qualification per ISO 14644-4.
- ISO 14644
- URS
- As-built
Cleanroom · Validation
Cleanroom Validation Consultant (ISO 14644)
Plan ISO 14644 classification, HVAC qualification, and monitoring for device and pharma cleanrooms. NQSC supports URS review, test protocols, validation reports, and dossier evidence. Accredited particle and microbiological testing is coordinated through qualified laboratories.
- 25+Years Experience
- 500+Companies
- Validation Support
- ISO 14644 · HVAC
Cleanroom validation pathway
- 1Define ISO 14644 class and occupancy states
- 2Complete ISO 14644-3 classification tests
- 3Execute HVAC IQ/OQ/PQ where applicable
- 4Establish ISO 14644-2 monitoring and requalification plan
ISO 1464414644-3IQ/OQ/PQHVACMonitoring
Which cleanroom pathway applies?
- New cleanroom or greenfieldURS · 14644-4 · As-built tests
- Requalification after HVAC changeImpact assessment · Re-test scope
- Sterile manufacturingTRS 1044 · Grade limits · EM plan
- Non-sterile pharma HVACTRS 1010 Annex 8 · Risk-based qualification
- Medical device controlled areasCDSCO evidence · ISO 13485 linkage
Who needs this
Who needs cleanroom validation support
NQSC supports new builds, sterile pharma and device sites, HVAC upgrades, isolator qualification, and teams running ISO 14644-2 monitoring programmes.
Sterile pharma manufacturers
Sites qualifying cleanrooms under WHO TRS 1044 Annex 2 or EU GMP Annex 1 with particle and microbial evidence.
- TRS 1044
- Grade A/B
- EM
Medical device sterile areas
Controlled environments supporting CDSCO manufacturing dossiers and ISO 13485 audit expectations.
- CDSCO
- ISO 13485
- Validation
HVAC upgrade and reclassification
Existing rooms changing ISO class, HEPA filters, or monitored zones after construction or equipment changes.
- Requalification
- HVAC
- HEPA
Isolators, RABS, and UDAF
Qualification of unidirectional airflow units, isolators, and restricted access barrier systems used in aseptic processing.
- UDAF
- Isolator
- Airflow
Monitoring programme owners
QA teams implementing ISO 14644-2 monitoring plans, trending, alert limits, and periodic reclassification.
- ISO 14644-2
- Trends
- Alerts
Compare pathways
ISO 14644 classification vs GMP cleanroom qualification
ISO 14644-2 monitoring continues after initial classification. Sterile GMP may require requalification of Grade A and B areas at intervals up to 6 months under WHO TRS 1044.
ISO 14644 classification
Best for: engineering proof of air cleanliness by particle concentration.
- ISO 14644-1 class assignment using LSAPC sampling
- ISO 14644-3 tests in as-built, at-rest, and operational states
- HEPA integrity, airflow, and pressure differential evidence
Relevant forms
- ISO 14644-1
- 14644-3
- LSAPC
- At-rest
GMP qualification and monitoring
Best for: regulated sterile or controlled manufacturing under WHO or EU GMP.
- WHO TRS 1044 or EU Annex 1 particle limits and microbial assessment
- Qualification tests distinct from routine environmental monitoring
- Defined requalification scope including filters, airflow, and recovery tests
Relevant forms
- TRS 1044
- Annex 1
- EM
- Requalification
Documentation
Documentation typically reviewed for cleanroom validation
Grouped for readiness review before classification, HVAC qualification, and monitoring implementation.
Design & URS
- User requirement specification
- Room layout and airflow diagrams
- ISO 14644 class rationale
- Personnel and material flow maps
Classification & Qualification
- ISO 14644-3 test protocols and reports
- As-built, at-rest, and operational test records
- HEPA filter integrity test records
- Pressure differential and airflow pattern data
HVAC Validation
- Validation master plan
- IQ/OQ/PQ protocols and summary reports
- Utility qualification (HVAC, water, compressed air)
- Deviation and CAPA records from validation
Monitoring & Requalification
- ISO 14644-2 monitoring plan
- Alert and action level definitions
- Particle trend data and review records
- Requalification schedule and periodic test records
GMP Environmental Evidence
- Microbial monitoring rationale and SOPs
- Environmental monitoring data summaries
- Linkage to sterile dossier or CDSCO manufacturing evidence
- Recovery test or air velocity records where applicable
Note: Final document scope is confirmed after reviewing URS, room layout, HVAC design, and target regulatory pathway.
Process
From URS to monitoring and requalification
A structured process for class definition, classification testing, HVAC validation, monitoring plans, and dossier support.
Scope and class definition
Confirm sterile vs non-sterile scope, device vs pharma context, and target ISO 14644 class with occupancy states.
URS and design review
Review layout, airflow concept, pressure cascade, and personnel and material flows against URS.
Classification and qualification testing
Plan ISO 14644-3 tests and GMP cleanroom qualification tests (particles, filters, airflow, pressure).
HVAC IQ/OQ/PQ
Execute or coordinate HVAC validation protocols and close deviations with documented evidence.
Monitoring and requalification plan
Implement ISO 14644-2 monitoring plan, alert limits, trends, and requalification schedule.
Dossier and inspection support
Compile validation summaries for regulatory dossiers and support authority or customer queries.
How NQSC helps
Support across classification, HVAC validation, and monitoring
NQSC supports URS scoping, ISO 14644 test protocols, HVAC IQ/OQ/PQ documentation, monitoring plans, and regulatory dossier alignment.
URS and ISO class scoping
Define user requirements, occupancy states, and ISO 14644 class targets based on process, sterile scope, and applicable GMP.
Classification and test protocols
Draft ISO 14644-3 test protocols for as-built, at-rest, and operational states with sampling location rationale.
HVAC validation documentation
Support validation master plans, IQ/OQ/PQ protocols, and reports aligned with WHO validation and Annex 15 style qualification.
Monitoring plan design
Structure ISO 14644-2 monitoring plans with alert and action limits, trending, and requalification triggers.
GMP dossier alignment
Map environmental evidence to CDSCO manufacturing files, sterile device dossiers, or pharma COPP inspection readiness.
Test coordination and reporting
Coordinate qualified lab particle and microbiological testing and compile summary reports for QA review.
Avoid delays
Avoidable issues that delay cleanroom qualification
Issues NQSC often sees during ISO 14644 classification and GMP cleanroom qualification projects.
Classification confused with monitoring
Treating a one-time ISO 14644-1 classification as proof of ongoing performance without an ISO 14644-2 monitoring plan and GMP environmental monitoring where required.
Class mismatch vs operations
Room classified without matching process risk, gowning, material flow, and occupancy state (at-rest vs in operation).
Incomplete HVAC qualification
IQ/OQ/PQ gaps or missing validation master plan linkage for critical HVAC systems and utilities.
Microbial evidence missing
Particle classification completed without risk-based microbial monitoring required for GMP sterile qualification.
Requalification schedule not defined
No periodic requalification plan after HVAC changes; sterile Grade A/B areas often require intervals up to 6 months under WHO TRS 1044.
Poor recovery time data
Missing recovery test or air velocity evidence for non-unidirectional areas after door openings or HVAC interruption.
Client trust
Client feedback on NQSC validation support
Feedback from teams supported across cleanroom validation, HVAC qualification, audit readiness, and compliance documentation.
ISO · CE · CDSCO
“Excellent support throughout certification activities, including ISO, CE marking and CDSCO submissions.”
CDSCO · Manufacturing
“Fast and accurate service.”
Regulatory Support
“We are fully satisfied with the services provided by NQSC.”
Selected clients supported by NQSC
FAQ
Questions before you qualify
Short answers on ISO 14644 classes, classification vs monitoring, testing, requalification, and regulatory links.
Class targets depend on process risk, sterile vs non-sterile operations, occupancy state, and applicable GMP (device dossier, WHO TRS 1044, EU Annex 1, or Schedule M HVAC). NQSC helps define targets during URS and risk review.
ISO 14644-1 covers periodic classification by particle concentration. ISO 14644-2 requires a risk-based monitoring plan for ongoing performance. GMP routine environmental monitoring is separate from qualification classification under WHO TRS 1044 and EU Annex 1.
NQSC supports protocol design, documentation, and coordination. Accredited particle counting and microbiological testing are performed by qualified partner laboratories.
ISO 14644-2 defines monitoring and periodic reclassification in your plan. For sterile pharma, WHO TRS 1044 cites a maximum interval of 6 months for Grade A and B areas, with risk-based intervals for Grade C and D. Requalification is also required after significant HVAC or layout changes.
Medical device sites typically provide environmental validation evidence in technical and manufacturing dossiers for CDSCO or customer audits. Sterile pharma sites follow WHO TRS 1044 or EU Annex 1 grade limits with microbial qualification and defined requalification tests.
Yes. Environmental control records support CDSCO sterile device manufacturing applications and pharma COPP or HVAC inspection readiness. NQSC supports documentation; authorities and qualified labs perform inspections and accredited tests.
Qualifying a new or upgraded cleanroom?
Share room class targets, sterile vs non-sterile scope, device vs pharma context, and any recent HVAC changes. NQSC will outline validation and documentation priorities.
Protocol and documentation support. Accredited particle and microbiological testing is performed by qualified laboratories.