Question 1

Does a P3 filter mean a respirator is TH3?

Accepted Answer

No. P3 describes the filter's efficiency, while TH3 describes the certified performance of the complete powered respirator. A device can use a P3 filter and still only be certified to TH2, because the TH rating depends on the whole system (blower, airflow, hose, headtop and filter) tested together, not the filter alone.

Question 2

What is the difference between TH2 and TH3?

Accepted Answer

TH2 has an Assigned Protection Factor (APF) of 20 and TH3 has an APF of 40, so TH3 provides twice the protection of TH2 under EN 12941. TH2 is appropriate where a COSHH risk assessment shows exposure falls within its range. Many organisations choose TH3 for the extra headroom and flexibility across varied tasks.

Question 3

What is the APF of a TH3 respirator?

Accepted Answer

A TH3 powered respirator has an Assigned Protection Factor (APF) of 40, meaning it is designed to be used in atmospheres up to 40 times the Workplace Exposure Limit, subject to a suitable risk assessment.

Question 4

Is TH3 always the right choice?

Accepted Answer

Not automatically. The correct level of respiratory protection should always be determined by a suitable COSHH risk assessment. TH3 offers the highest certified protection under EN 12941, but a lower rating may be appropriate depending on the contaminant, concentration and task.

Question 5

Do you need a face fit test for a TH3 powered respirator?

Accepted Answer

Loose-fitting powered respirators, including TH3 devices like the AirMask 1000, do not require face fit testing because they do not rely on a tight seal against the skin. This is different from tight-fitting masks (disposable, half and full-face), which legally require a face fit test for each wearer under HSE guidance.

Question 6

Can you wear a TH3 powered respirator with a beard?

Accepted Answer

Yes. Because loose-fitting powered respirators do not seal against the face, they can be worn with beards, stubble and other facial hair. Tight-fitting masks cannot, because facial hair breaks the seal they depend on, so a loose-fitting powered respirator is often the only effective option for workers with beards.

The Lightest Loose Fitting PAPR

<500g ensures long shift comfort

No Face Fit Required

EN12941 TH3 Certification eliminates requirement for face fit

Equalised Quadratic Weight Distribution

Filters, electronics, mask and fan evenly distributed around the power unit to reduce repetitive strain injury

No Trailing Leads or Pipes

Compact design eliminates traditional pipe snagging risks

Loose Fit PAPR for Beards

Beard friendly solution without the hassle

P3, ABEK1P3, ATEX & Exhalation Solutions

Choose from solutions crafted for individual applications

OVERVIEW

Powered Respirator Variations

Approved for use in Explosive Environments

Healthcare Exhalation Filter

AirMask1000-E available in 3G 3D Zone 2 / 22 and 2G 2D Zone 1 / 21 ...

Protecting patient safety with P3 Exhalation Filtration options

ABEK1P3 Gas Filter Adapter

Suitable for Gas, Vapours &Particulates

P3 Filtration Module

P3 filtration module with main P3 filter and replaceable pre-filter

Certification

Support & Resources

Request A Free Trial

Experience Airmask 1000 in your real working environment before making a commitment.

Training Videos

Watch training videos covering the basics of the AirMask1000. How to Don, Doff, Change Filters and more.

Download Resources

Access detailed product information and technical documentation for Airmask 1000.

AirMask1000 - Industrial

PDF | 814 KB

AirMask1000-E - ATEX

PDF | 1.14 MB

AirMask1000-H - Healthcare

PDF | 1.28 MB

AirMask1000 Datasheet

PDF | 1.71 MB

Decontamination Guidance

PDF | 491 KB

EX-F Datasheet

PDF | 915 KB

Quick Start Guide

PDF | 2.36 MB

Smarter breathing protection for life’s critical environments.

Just Breathe.