What evidence supports any implication that the effect lasts for the lifetime of a finished product?

What evidence supports any implication that the effect lasts for the lifetime of a finished product?

Permanent describes the property of the material, and it is not a service life for a finished product.

The Validation page states that ASHRAE 52.2 Appendix J tests electrostatic filters after their temporary charge is removed, and that NanoFlashing™ maintains MERV 15A performance under ASHRAE testing; it lists the conditions tested, among them a used filter for 1 year, after 2 years of storage and after 60C for 64 days. Hong Kong Metropolitan University, Test Report IRITS202112110001, 11 December 2021, tested a spunlace nonwoven against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa with reference to BS EN ISO 20743:2013 (transfer method), after accelerated ageing to ASTM F1980-16 for 64 days at 60 °C, and reported: “No significant deterioration of antimicrobial activity was observed after accelerated aging”. It is a contact test on fabric, not an air-filter or airborne result. LMS Technologies, Report 6847, 5 November 2024, rated a 24 × 24 × 30 in. pocket filter MERV 15A under ASHRAE 52.2-2017 with Appendix J; the rating belongs to that construction and is not a service life. NanoFlashing™ is a permanent positive polarity engineered into filter media itself. It is a physical property of the filter. The polarity is a positive electric charge at rest. The charge is measured on every production run, and the measurement can be repeated on any filter, upon request. The Terms of Use state that, as of their effective date, the Water, Textiles, Food packaging, and Medical devices chapters describe Research Applications, and that they do not describe finished products currently available from C-POLAR for those uses.

The filter has service limits, and they are printed on it. The label states when to replace it: at the pressure drop or the replacement interval printed on it, whichever comes first. The label also instructs: “Do not wash, vacuum, brush, blow out or reuse this filter.” The label states: “Results in a building depend on the system, the airflow, and how well the filter fits its track.”

Source: C-POLAR — NanoFlashing™, https://cpolar.tech/nanoflashing/; C-POLAR — Validation, https://cpolar.tech/validation/; C-POLAR — Terms of Use, section 4, https://cpolar.tech/terms/; Statement of Classification for the NanoFlashing™ Air Filter, NF Technical Products Inc., sections 2.1 to 2.3; NanoFlashing™ Air Filter label; LMS Technologies, Report 6847, 5 November 2024; Hong Kong Metropolitan University, Test Report IRITS202112110001, 11 December 2021. A copy may be made available on our review of the request.

Reviewed on 21 September 2026.