# Counterfeit N95 Masks: The Respirators That Fail the Test They Claim to Pass

Source: https://knockoffradar.com/blog/2026-11-06-counterfeit-n95-masks-monitoring.html

KnockoffRadar blog · 2026-11-06


## The number is the respirator

An N95 respirator is defined by a test: it filters at least 95 percent of airborne particles, and the National Institute for Occupational Safety and Health, NIOSH, approves it and assigns a TC approval number. That number is printed on the respirator itself, and it can be checked against the NIOSH certified equipment list. A respirator without a verifiable TC number is not an N95, whatever the box says, and a listing that shows a TC number belonging to a different model is selling a number, not a respirator.

The confusion is deliberate. KN95 is a Chinese standard, not a NIOSH approval, and during the pandemic NIOSH evaluated a large sample of KN95s and found roughly 60 percent did not meet the filtration standard they claimed. That figure is the reason monitoring teams treat any respirator claim as a claim to be verified, not a fact to be repeated. The standard is the test. The test is the number. The number is checkable.

## Where fakes concentrate, and who they hurt

Counterfeit respirators concentrate where buyers are under pressure and cannot wait: hospitals during a surge, construction crews, wildfire response, and any buyer ordering in bulk for a workforce. The harm is not a wasted purchase. It is a worker who believes they are protected and is not, doing a job that generates the particles the respirator was supposed to stop. A fake phone charger wastes money. A fake respirator wastes the protection itself.

Marketplace listings are the main channel, because a listing can show a genuine NIOSH approval photo and ship a different respirator. Monitoring teams check the seller the way they check any counterfeit category: storefront age, whether the seller carries one product or fifty unrelated ones, whether the reviews cluster in a single week. A storefront that appeared last month selling respirators, chargers, and jewelry is not a safety supplier.

## The checks a buyer can run before ordering

First, the TC number. Ask the seller for the approval number printed on the respirator, and check it against the NIOSH certified equipment list. If the number belongs to a different model, or does not exist, stop. Second, the markings: a genuine NIOSH-approved respirator carries the NIOSH name, the TC number, the filter designation, and the lot number, printed on the respirator itself, not only on the box. Third, the fit and the feel: a genuine N95 seals to the face, with straps that hold tension and a nose clip that holds its shape. A respirator with flimsy straps and a clip that springs back is not built to seal, and a respirator that does not seal does not filter.

Fourth, the price against the market. A bulk order priced far below every legitimate supplier is not a bargain. It is a respirator that skipped the testing, and the testing is the product.

## What to do when the listing fails

Report the listing to the marketplace with the specific discrepancy: the TC number does not verify, the markings do not match the NIOSH record, the seller's storefront is days old. Include the listing screenshots and the approval number claimed. Counterfeit respirators are also a report to NIOSH and, where workers are involved, to the employer safety officer, because the listing is not only a fraud. It is a workplace hazard, and the report should say so.

## Related reading

If this topic is useful, these earlier guides go deeper on connected questions: [Counterfeit Auto Parts: The Listings That Put Brakes and Airbags at Risk](https://knockoffradar.com/blog/2026-11-05-counterfeit-auto-parts-monitoring.md), [Counterfeit Phone Chargers: The Listings That Fail the Safety Test](https://knockoffradar.com/blog/2026-10-26-counterfeit-phone-chargers-monitoring.md), and [What Test Buys Actually Say About the Counterfeit Rate](https://knockoffradar.com/blog/2026-11-03-itif-test-buys-counterfeit-rate.md).

## Frequently asked questions

### How do I verify an N95 respirator is genuine?

Check the TC approval number printed on the respirator against the NIOSH certified equipment list. A genuine N95 carries the NIOSH name, the TC number, the filter designation, and the lot number on the respirator itself, not only on the box.

### What is the difference between N95 and KN95?

N95 is a NIOSH-approved standard that filters at least 95 percent of airborne particles, with a verifiable approval number. KN95 is a Chinese standard, not a NIOSH approval, and NIOSH found roughly 60 percent of the KN95s it evaluated did not meet the standard they claimed.

### Can a counterfeit respirator look identical to a real one?

Yes. Counterfeits copy the markings and the box. The checks that matter are the TC number verification, the quality of the straps and nose clip, and whether the respirator seals to the face. A respirator that does not seal does not filter.

### Where should I report a counterfeit respirator listing?

Report it to the marketplace with the specific discrepancy, and to NIOSH. Where workers are involved, also tell the employer safety officer, because the listing is a workplace hazard, not only a fraud.