News Details

On 9 February 2026, the Bureau of Indian Standards released a wide circulation draft prepared by the Occupational Safety and Health Technical Committee (CHD 8), titled Particle Filters used in Respiratory Protective Equipment – Specification (First Revision). This draft revises the existing standard IS 15322. All stakeholders are requested to review the draft and submit their comments by 10 April 2026. 

Purpose of the standard 

Work environments can be contaminated by gases, vapours, fumes, dust, mists, and smoke. Where existing control measures are insufficient, the use of respiratory protective equipment is recommended. The revised standard for Particle Filters used in Respiratory Protective Equipment aims to ensure that filter-type respirators are tested under laboratory conditions to provide reliable protection. 

The original version of the standard was published in 2003. This revision introduces new clauses on visual inspection and temperature conditioning, updates test methods, strengthens marking and usage instructions, and incorporates editorial improvements. The draft also aligns with international standards, drawing guidance from EN 143:2000. 

Scope 

This standard sets out the requirements and testing methods for particle filters and components in unassisted respiratory protective devices, excluding escape apparatus and filtering facepieces. 

Particle filters are classified into three classes: P1, P2 and P3.  

The air flow resistance of the filters must be minimized and must not exceed the values specified in the table below: 

Packing and Marking 

Particle filters must be packed to prevent damage during transit, with the cartridges protected to avoid damaging the threads and sealing surfaces. All filters and packages must be clearly marked with type and class (P1, P2, or P3), colour code, batch or serial number, manufacturer details, and relevant safety instructions. Filters that fail the paraffin oil test must carry the note “For use against solid aerosols only”, and the expiry year should be indicated where applicable. 

All markings must be durable and legible. Products that meet the standard may carry the BIS Certification Mark under the Bureau of Indian Standards Act, 2016.