High efficiency air filters (EPA, HEPA and ULPA) - Part 1: Classification, performance testing, marking

Comment end date 2026-10-10

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Project stage codes

1. Prioritetinių darbo temų pažymėjimas ir ekspertų skyrimas

2. Projektas

3. Viešoji apklausa

From 2026-08-11 till 2026-10-10

4. Closure of enquiry

5. Submission to Formal Vote

Organisation

CEN Europos standartizacijos komitetas

ICS

13.040.40 - Stationary source emissions

Technical Committee

TK 50 Heating and Ventilation Systems

ForeignTC'S

CEN/TC 195

Number of comments

Comment start date

2026-08-11

Scope

This document is applicable to efficient particulate air filters (EPA), high efficiency particulate air filters (HEPA) and ultra-low penetration air filters (ULPA) used in the field of ventilation and air conditioning and for technical processes, e.g. for applications in clean room technology or pharmaceutical industry. This document establishes a procedure for the determination of the efficiency on the basis of a particle counting method using a liquid (or alternatively a solid) test aerosol and allows a standardized classification of these filters in terms of their efficiency, both local and integral efficiency. This document is based on particle counting methods which actually cover most needs of different applications.

Relations

Pakeis

prEN 1822-1