veriDART® Project Planning


SafeTraces provides veriDART, the only indoor air quality verification that actively measures pathogen risk, using patented aerosol tracing technology. veriDART’s proprietary airborne tracers safely mimic the chemical composition, mobility, and effect of ventilation and filtration for aerosol contaminants.

SafeTraces has one core offering, the UL Verification Test to support the UL Verified Ventilation and Filtration program. Additionally, SafeTraces offers four custom offerings, the General Survey Test, Dilution Test, Mini-Survey Test, and Recirculation Test.

Core Offering

UL Verification Test

  • What: Used to verify aerosol rate of reduction over time in occupied spaces.
  • Why: This test consists of Desktop Review (Ventilation and filtration performance evaluated based on a building’s design, HVAC system specifications and other key building data), Field Evaluation (Ventilation and filtration performance evaluated in high-density areas) and Verification Mark (Building owner and operator is issued a UL Marketing Claim Verification Mark if a building achieves 99% aerosol removal within 1 hr. in all test locations and passes the Desktop Review).
  • Where: Ventilation and filtration performance evaluated in high-density areas.

Custom Offerings

1. 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.

2. Dilution 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 Dilution test is conducted in an enclosed area but also useful in large open areas such as cubicle areas.

3. Mini-Survey Test

  • What: Used to verify local isolation of a small enclosed area vs the surrounding area or to identify localized aerosol migration patterns. This test may also be combined with the Dilution Test to offer further diagnostic capabilities in occupied spaces.
  • Why: This test is a more focalized Survey Test.
  • Where: Smaller areas than the primary Survey Test and is often used as a follow-up test for areas that may have unexpected results in either the Survey and/or Dilution Tests.

4. Recirculation Test

  • What: Used to verify aerosol dilution through the HVAC Duct system (return and supply).
  • Why: This test is typically used to monitor the aerosol flow from the occupied space through the HVAC Filtering system to verify high dilution/filtration of the supply air.
  • Where: Release points are selected in the occupied area, which is served by the RTU, or AHU being tested while the samples are collected both upstream (return air) and downstream (supply air) of the filters and outside air damper or Air Handling System(s).

Items Needed to Plan a Project

  1. veriDART Certification
  2. Statement of Work
  3. Project Scope
  4. Facility/Floor Diagram
  5. veriDART Portal Access