Decoding EN 143:2021: The Curious Case of the Missing ‘R’ in Your Filters

In July 2021, the European Standard EN 143, which outlines specifications for particle filters in respiratory protective devices, underwent significant revisions to enhance clarity and user safety. These updates, harmonized by the EU Commission in December 2022, introduced notable changes in the marking and labelling of filters.

Key Changes in Filter Marking and Labelling:

1. Removal of ‘NR’, ‘R’, and ‘D’ Markings:

The previous designations indicating filter reusability—’NR’ (Non-Reusable) and ‘R’ (Reusable)—as well as ‘D’ (Dolomite clogging test), have been omitted. This change aims to simplify labelling and reduce potential confusion regarding filter usage and testing.

2. Introduction of New Symbols:

Twin or Multiple Filter Usage: A specific symbol has been added to indicate filters designed for use in twin or multiple configurations, ensuring users assemble their respiratory protective devices correctly.

Storage Conditions: Symbols denoting recommended storage temperature ranges and maximum humidity levels are now included, helping maintain filter integrity during storage.

Implications for Consumers:

These updates are designed to provide clearer information, enabling users to make informed decisions about respiratory protection. By understanding the new symbols and labelling conventions, consumers can ensure they select and use filters appropriately, maintaining optimal safety standards.

Commitment to Compliance:

At The Face Mask Store, we prioritize your safety by ensuring all our particle filters comply with the latest EN 143:2021 standards. Our products feature the updated markings and symbols, providing you with the confidence that you’re using equipment that meets current regulatory requirements.
Staying informed about these changes is crucial for effective respiratory protection. We encourage you to familiarize yourself with the new labelling to continue making safe and informed choices.