UV Smart D45 Achieves 6-Log Reduction in TU Dublin Study

Technological University Dublin (TU Dublin) independently evaluated the UV Smart D45 UV-C disinfector in a real-time setting in Ireland. The results confirmed EN 14885-aligned performance and demonstrated ≥6-log reduction (or better), supporting standardized high-level disinfection for probe workflows in just 75 seconds.

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UV Smart D45 Achieves 6-Log Reduction in TU Dublin Study

In modern healthcare, disinfection must be more than routine, it must be reliable, measurable, and repeatable. This is especially true for semi-critical devices such as ultrasound probes, where ineffective reprocessing can increase the risk of cross-contamination and contribute to healthcare-associated infections (HAIs).

To help validate a more standardized approach to probe disinfection, the UV Smart D45 was independently evaluated at the MDD Hub Laboratory at Technological University Dublin (TU Dublin) in Ireland. The evaluation assessed microbial efficacy and performance requirements aligned with EN 14885, including bactericidal, fungicidal, sporicidal, and mycobactericidal effectiveness. Importantly, TU Dublin evaluated the UV Smart D45 under two conditions: (1) with standard pre-cleaning, and (2) without pre-cleaning to simulate worst-case real-world use. In both scenarios, the system demonstrated exceptional microbial kill including ≥6-log reduction (or better), reinforcing the D45's ability to deliver High-Level Disinfection (HLD) while making workflows more efficeient.

A key highlight from the evaluation: TU Dublin observed ≥6-log reduction (or better) results, reinforcing the D45 as a strong solution for supporting High-Level Disinfection (HLD) workflows.

Why Log Reduction Matters in High-Level Disinfection

In healthcare settings, disinfection performance must be measurable. That’s why “log reduction” is used to describe how effectively microorganisms are reduced on a device surface.

To put it simply:

4-log reduction = 99.99% reduction of microorganisms
6-log reduction = 99.9999% reduction of microorganisms

That difference isn’t minor, it reflects a significantly higher level of microbial kill. For hospitals evaluating disinfection methods, achieving 6-log reduction or more is a powerful indicator that a solution is delivering results consistent with the expectations of high-level disinfection performance.

This was a central focus of the TU Dublin evaluation of the UV Smart D45.

The TU Dublin Evaluation: Real-Time, Clinically Relevant Testing

The TU Dublin evaluation was designed to reflect real workflow conditions rather than idealized lab-only testing. Conducted across Q2–Q3 2025, the study reviewed disinfection performance outcomes of the UV Smart D45 in a structured evaluation aligned to EN 14885 expectations.

The evaluation aimed to determine whether the UV Smart D45 could support probe disinfection workflows with stronger consistency than manual methods, while achieving measurable high-level disinfection results through microbial reduction testing.

Key Finding: ≥6-Log Reduction (or Better) Observed

The most compelling element of the TU Dublin evaluation is its confirmation of high microbial efficacy. Notably, TU Dublin documented high log reduction performance under both study conditions including testing without pre-cleaning. Achieving ≥6-log reduction (or better) in both scenarios highlights the exceptional efficacy and repeatability of the D45 process, supporting standardized disinfection outcomes when consistency matters most.

The evaluation concluded that UV Smart D45 is compliant with EN 14885 and highlighted performance that “outperforms” HLD requirements, including outcomes demonstrating ≥6-log reduction or better. To reflect clinical reality, the evaluation included testing both with and without pre-cleaning. This allowed TU Dublin to assess performance not only under ideal protocol conditions, but also in scenarios where manual steps may be inconsistent due to time pressure or workflow strain.

This is a meaningful result for clinical teams and procurement stakeholders, because it supports a critical goal: reducing variability and ensuring that disinfection performance is consistent, repeatable, and defensible during audits.

If your hospital is reviewing probe disinfection protocols, UV Smart can support your evaluation process.
👉 Request a D45 demo or ask for validation documentation.

The Challenge with Manual Wipes: Variation Creates Risk

Manual wipe disinfection is widely used, but it often introduces variation that is difficult to control.

Common workflow challenges include:

inconsistent contact time
human factors (pressure, coverage, missed surfaces)
changes in compliance under workload pressure
limited traceability in proving standardized results

TU Dublin’s evaluation reflects this concern directly by comparing wipe-based disinfection limitations with the value of a standardized automated UV-C workflow.

The message is clear: healthcare environments need disinfection processes that are not only effective, but operationally reliable.

UV Smart D45: Automated UV-C Disinfection in 75 Seconds

In addition to microbial performance, speed matters, especially in busy departments where probes must be reprocessed throughout the day.

The evaluation references the UV Smart D45 disinfection cycle time of 75 seconds, supporting clinical flow while improving standardization.

This combination of fast turnaround and high disinfection performance makes D45 an effective fit for environments such as:

ultrasound departments
emergency care
outpatient diagnostic settings
high-throughput workflows

Want to reduce turnaround time without sacrificing HLD-level performance?
👉 Talk to UV Smart about D45 workflow implementation.

Beyond Efficacy: Sustainability and Reduced Chemical Burden

The TU Dublin evaluation also recognized sustainability considerations, including potential benefits related to:

reduced reliance on chemical disinfectants
lower waste burden
reduced PPE requirements in certain workflows

As sustainability becomes increasingly tied to healthcare procurement and compliance priorities across Europe, solutions that help reduce chemical waste while maintaining performance standards become even more valuable.

Conclusion: TU Dublin Adds Strong Independent Support for UV Smart D45

The TU Dublin evaluation provides meaningful evidence that the UV Smart D45 delivers disinfection performance aligned with EN 14885 expectations, including observed results demonstrating ≥6-log reduction (or better).

For hospitals and clinics, this supports a critical shift: moving from variable manual disinfection practices toward automated, standardized, auditable high-level disinfection workflows.