PPE CASE Notes

About these resources

Personal Protective Equipment Conformity Assessment Studies and Evaluations (PPE CASE) Notes provide a summary of findings from our post-market personal protective equipment tests, evaluations, and investigations. These one-page summaries inform respirator users about common themes or trends we found and provide best practice reminders to prevent future occurrences.

Publications

Fraudulent Cartridges and Filters Fail to Meet NIOSH Performance Requirements: P100 Filters

Image of the report titled, Fraudulent Cartridges and Filters Fail to Meet NIOSH Performance Requirements: P100 Filters.
This report details the results of fraudulent P100 filter performance testing and shares ways to make sure your respirator is approved by NIOSH.

Fraudulent Cartridges and Filters Fail to Meet NIOSH Performance Requirements: Combination Cartridges

Image of the report titled, Fraudulent Cartridges and Filters Fail to Meet NIOSH Performance Requirements: Combination Cartridges
This report details the results of fraudulent combination cartridge performance testing and shares ways to make sure your respirator is approved by NIOSH.

Fraudulent Cartridges and Filters Fail to Meet NIOSH Performance Requirements: Chemical Cartridges

Image of the report titled, Fraudulent Cartridges and Filters Fail to Meet NIOSH Performance Requirements: Chemical Cartridges
This report details the results of fraudulent chemical cartridge performance testing and shares ways to make sure your respirator is approved by NIOSH.

Common Site Audit Nonconformance: Lack of Internal Audit Procedures and Documentation

Image of the report called Common Site Audit Nonconformance: Lack of Internal Audit Procedures and Documentation.
This report details nonconformances identified during site audits and best practices approval holders should follow for internal audits.

Verifying Shelf Life for NIOSH Approved® Filtering Facepiece Respirators (FFRs)

Image of the report called Verifying Shelf Life for NIOSH Approved® FFRs.
This report details respirator shelf-life considerations for Filtering Facepiece Respirators (FFRs).

Hot Filling Hazards with SCBA Air Cylinders

Image of the report called Hot Filling Hazards with SCBA Air Cylinders.
This report provides considerations for storing fully charged self-contained breathing apparatus (SCBA) Air Cylinders.

Firefighter SCBA Facepiece Sizing Issues

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This report focuses on SCBA facepiece sizing issues within fire departments.
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Content Source
National Institute for Occupational Safety and Health
About This Page
Published: April 23, 2025
Updated: February 3, 2025

This page was last updated on this date. Updates may include minor edits, image changes, or other modifications to page content.

Reviewed: February 3, 2025

The information on this page was last reviewed by subject matter experts to ensure accuracy.

  • NIOSH Approved is a registered certification trademark of the U.S. Department of Health and Human Services (HHS) in the United States and several other countries.
  • P100 is a registered certification trademark of the U.S. Department of Health and Human Services (HHS) in the United States.