Can a NIOSH approval claim remain valid if replacement cartridges come from outside the approval holder's controlled supply chain?

Can a NIOSH approval claim remain valid if replacement cartridges come from outside the approval holder's controlled supply chain?

The company offers no respiratory protective device, and it publishes no approval for one.

The NanoFlashing™ Air Filter is a panel air filter for forced-air heating, ventilation and air-conditioning systems. Its label sets where it is used: forced-air heating, ventilation and air-conditioning systems in homes, businesses and institutions that take a panel filter of the stated size and run at or below the rated airflow and maximum face velocity. The label also states: “This filter treats the air that passes through it,” and: “It works alongside ventilation and cleaning, not in place of them.”

An approval held for a respiratory product is held by its approval holder, for the assembly named in it, and it does not carry to a component or to a part obtained outside that holder's own supply. The Terms of Use state: “Use evidence, specifications, instructions, and warnings specific to the actual finished product and use.” NanoFlashing™ is a technology; the name, rating and sale of a product that carries it are set by that product's maker and seller.

Source: NanoFlashing™ Air Filter label; Statement of Classification for the NanoFlashing™ Air Filter, section 1.2, issued by NF Technical Products Inc.; C-POLAR — Terms of Use, section 3, https://cpolar.tech/terms/.

Reviewed on 21 September 2026.