veriDART® Documentation
veriDART Test Offerings
UL Verified Ventilation and Filtration Test
- What: Used to verify aerosol rate of reduction over time in occupied spaces.
Steps to Apply for the UL Verified Ventilation and Filtration Badge:
- Pass the Building Level Desktop Review
- ~Ventilation and filtration performance evaluated based on a building’s design, HVAC system specifications and other key building data.
- Conduct and pass the Field Evaluation
- ~Ventilation and filtration performance evaluated in high-density areas.
- Apply for the UL Mark
- ~Building owner-operator is issued the UL Verified Ventilation & Filtration Mark, a UL Marketing Claim Verification Mark, if a building passes the Desktop Review and achieves 99% aerosol removal within 1 hr. in all test locations.
General Survey Test
- What: Used to verify aerosol migration from a release point to surrounding occupied spaces.
- Why: This test can be conducted under varying scenarios as well as gain baseline data about the HVAC condition of the test environment. This test provides useful information about HVAC system balance.
- Where: Typically, the Survey Test is conducted over a large area and may include offices, restrooms, open areas, break rooms, conference rooms, trafficking areas, etc.
Verification Test
- What: This test is the same as the UL Verification. However, for passed tests, no UL certification is granted.
- Why: This test evaluates aerosol removal rates, often used for scenario testing of various HVAC settings or other mitigation strategies like in-room HEPA filtration.
- Where: Typically, the Verification test is conducted in an enclosed area but also useful in large open areas such as cubicle areas.
Flex Test
Flexible test adaptable to:
- Recirculation - spray in occupied space and test in AHU return and supply
- mini-Survey - Test for isolation.
- ~Spray inside the room and sample outside
- ~Spray outside the room in multiple locations and test inside the room
- Why
- ~Recirculation - To evaluate building level dilution and AHU filtration effects
- ~Mini-Survey - To test isolation
- How
- ~Up to 12x OP all the same tag
- ~Up to 12x SPs all SKC's
- ~Run for 30 min
- Where
- ~Occupied space and AHU
- ~Occupied space - typically enclosed areas but could be used to evaluate the "wind direction" in an open area
Positive Pressure Test
Verify aerosol movement between a positively pressurized room and surrounding areas and/or sterile zones within the room.
- What: Used to verify aerosol flow patterns out of and into positive pressure rooms. Additionally, samples can be obtained within Operating Room Aseptic zones or within a Bio Safety Cabinet to verify isolation from the main part of the room.
- Why: This test is typically used to verify the positive pressure HVAC system performs as designed to keep aerosols out of the room.
- Where: Pharmacy Compounding, Healthcare operating or procedure rooms and adjacent areas.
Negative/Neutral Pressure Test
Verify aerosol movement between a negatively pressurized or unpressurized room and surrounding areas and/or sterile zones within the room
- What: Used to verify aerosol flow patterns out of negative pressure rooms. Additionally, samples can be obtained within OR Aseptic zones or within a Bio Safety Cabinet to verify isolation from the main part of the room.
- Why: This test is typically used to verify the positive pressure HVAC system performs as designed to keep aerosols within the room.
- Where: Pharmacy Compounding, Healthcare Airborne Infectious Isolation or other rooms and adjacent areas.
UV Test
- What: Used to verify germicidal efficacy of UV-C Fixtures in air
- Why: This test can be used to verify UV-Fixtures disinfection effectiveness under differing UV-C wavelengths as well as possibly scaling to some know pathogens
- How: Use UV-Sensitive DNA Tracers which provide highly accurate quantitative measurement and verification of the germicidal efficacy of UV-C Fixtures
- Where: Optimize in-situ UV-C fixture performance based on room configuration, air distribution, and other local variables
Test Duration: 65 minutes
ASHRAE 241 Test
ASHRAE Standard 241 establishes minimum requirements to reduce the risk of airborne disease transmission in new and existing buildings. It mandates higher quantities of pathogen-free air through a combination of increased outdoor ventilation, superior filtration, and air-cleaning technologies during elevated infection risk periods.
- What: Used for performance testing for the control of infectious aerosols
- Why: To ensure that establish minimum requirements for equivalent clean airflow for controlling infectious aerosols\How: Use of approved aerosols (DNA Tracers) to assess “Equivalent Clean Airflow” (ECAi), which measures how effectively a space ventilation and filtration system removes infectious aerosols
Test Duration: 65 Minutes
Test Duration should be added to the end of each tests that are currently on the page:
- “UL Test” Test Duration: 60 minutes
- “General Survey Test” Test Duration: 30 Minutes
- “Verification Test” Test Duration: 60 Minutes
- “Flex Test” Test Duration: 30 Minutes
- “Positive/Negative/Neutral Pressure Tests: Test Duration: 60 Minutes