Do the reported smoke comparisons use matched filters and matching endpoints?
Last reviewed: .
Do the reported smoke comparisons use matched filters and matching endpoints?
LMS Technologies, Pine-Needle Smoke Report LMS#10471, 20 October 2025, measured a filter with NanoFlashing™ and the same media without it side by side, in one single-pass test in an ASHRAE 52.2 test duct; the conventional-filter curve on the Ultrafine Particles and Wildfire Smoke pages comes from a separate published source, which those pages cite.
The smoke and ultrafine-particle reports named on the Validation page are LMS Technologies, Report LMS#9904, 28 April 2025, a single-pass fractional efficiency test on a 24 × 24 × 2 in. pleated air filter in an ASHRAE 52.2 test duct, in accordance with standard LMS aerosol test procedures, and Report 6847, ASHRAE 52.2 with Appendix J. Report 6847 is on a 24 × 24 × 30 in. pocket filter; a rating belongs to the construction that was tested. LMS Technologies, Pine-Needle Smoke Report LMS#10471, 20 October 2025, compared a 24 × 24 × 2 in. pleated air filter of Aeropro media with C-POLAR against the same media without it, single-pass in an ASHRAE 52.2 test duct: the initial fractional efficiency with C-POLAR was higher at every particle size from 22 to 604 nanometres, for example 83.6% against 57.8% at 52 nanometres, and slightly lower at 16.5 nanometres; it is an initial laboratory result on clean media, not a result over a service life or in a building. The NanoFlashing™ page's chart names its control as a conventional MERV-13 filter, and it names no competitor's model. The EPA study cited alongside it measured clean-air delivery, which is a different measurement, and the two are not the same endpoint.
Source: C-POLAR — NanoFlashing™, https://cpolar.tech/nanoflashing/; C-POLAR — Validation, https://cpolar.tech/validation/; C-POLAR — Ultrafine Particles, https://cpolar.tech/contaminants/ultrafine-particles/; C-POLAR — Wildfire Smoke, https://cpolar.tech/contaminants/wildfire-smoke/; LMS Technologies, Report LMS#9904, 28 April 2025, a single-pass fractional efficiency test on a 24 × 24 × 2 in. pleated air filter in an ASHRAE 52.2 test duct, in accordance with standard LMS aerosol test procedures, and Report 6847, ASHRAE 52.2 with Appendix J; LMS Technologies, Inc., Pine-Needle Smoke Report LMS#10471, 20 October 2025, single-pass fractional efficiency in an ASHRAE 52.2 test duct. A copy may be made available on our review of the request.
Reviewed on .
Sources
- C-POLAR — NanoFlashing™
- C-POLAR — Validation
- C-POLAR — Ultrafine Particles
- C-POLAR — Wildfire Smoke
- LMS Technologies, Report LMS#9904, 28 April 2025, a single-pass fractional efficiency test on a 24 × 24 × 2 in. pleated air filter in an ASHRAE 52.2 test duct, in accordance with standard LMS aerosol test procedures, and Report 6847, ASHRAE 52.2 with Appendix J
- LMS Technologies, Inc., Pine-Needle Smoke Report LMS#10471, 20 October 2025, single-pass fractional efficiency in an ASHRAE 52.2 test duct