Aintree Hospital CT600 Clinical Study
The CT600 ceiling tile installation at Aintree Hospital won the BBH 2025 Gold Award for Best Patient Safety Initiative. Independent scientific validation by Professor Tony Fisher subsequently demonstrated 84-93% reduction in airborne pathogens across occupied NHS patient rooms.
NHS University Hospitals of Liverpool
Aintree Hospital - Single occupancy patient rooms
Professor Tony Fisher
Independent clinical validation and testing
Award-Winning Results
BBH 2025 Best Patient Safety Initiative
Study Parameters
Room Specifications
- • Volume: ~62m³
- • Height: 2.1m
- • Type: Single occupancy patient room
- • Existing ventilation: Mitsubishi heat exchanger (80-110 m³/hr)
CT600 Configuration
- • Capacity: 320-600 m³/hr
- • Air changes: 10 ACH
- • Installation: Ceiling tile retrofit
- • Technology: Coandă-based UVC air scrubber
CT600 Installation at Aintree Hospital
The CT600 ceiling tile units were retrofitted into existing ceiling grids in single occupancy patient rooms, demonstrating minimal disruption and seamless integration with existing hospital infrastructure.
Close-up view of CT600 ceiling tile unit installed in patient room ceiling grid
CT600 unit in situ within NHS patient room environment
Clinical Performance Results
Non-specific CFU (Colony Forming Units) counts per 200 litres of air, measured across four patient rooms with controlled on/off testing (UVC disabled vs. enabled):
| Test Period | Room #1 | Room #2 | Room #3 | Room #4 |
|---|---|---|---|---|
| UVC Disabled (Baseline) | 67.5 CFU | 60 CFU | 57 CFU | 54 CFU |
| UVC Enabled (CT600 Active) | 10.5 CFU | 8.5 CFU | 4 CFU | 6.5 CFU |
| Pathogen Reduction | 84.4% | 85.8% | 93.0% | 88.0% |
Average Pathogen Reduction
84-93%
Across all four NHS patient rooms tested
Key Conclusions
Laboratory Biovalidation
In-lab biovalidation confirms a CADR (Clean Air Delivery Rate) of >500m³·hr⁻¹ to the Liverpool Protocol standard
Clinical Effectiveness
In-clinic performance achieves an 88% average reduction in environmental (non-specific) CFU count when used in conjunction with existing ventilation systems
Ease of Retrofit
Simple installation into existing ceiling grid demonstrated - no major building works required, minimal disruption to patient care
ESG Impact
Significant contribution to Environmental, Social, and Governance goals through improved air quality, sustainability, energy efficiency, and cost efficiency
