Viridian Testing Laboratories

Filtering Half mask/ N95 Respiratory Test

N95 Respiratory Testing

A respirator is a tight-fitting filtering facepiece.

Wearer’s nose and mouth will be at least covered by the edges of the respirator in a tight seal.

This gives good breathability to wearers as the facepiece does not collapse against the mouth.

It is designed to achieve a very close facial fit and very efficient filtration of airborne particles, dust particles and infectious agents.

Particulate respirator is most commonly used for COVID-19 prevention as it intends to filter out airborne particles,Similar to medical masks, respirators that are designed to prevent transmission of disease are subject to strict regulatory standards in different countries before being made commercially available.

In the United States, respirator performance is regulated by NIOSH. These devices include N95 disposable respirators and are typically reserved for medical and other professional personnel.

In Europe, respirators must comply with EN 149, which outlines performance requirements for three types of particle-filtering respirators: FFP1, FFP2 and FFP3, China and India also have respirator standards and testing requirements in place.

The following key testing parameters are used for measuring the quality and performance attributes of Respirator Product.


Product Test Parameter Test Method
Respiratory Productive Device (Respiratory mask / N95) Particle Filtration Efficiency in N95 Series/ Penetration of Filter media NIOSH TEB-APR-STP-059
Inhalation resistance of valve less filtering mask NIOSH TEB-APR-STP-007
Exhalation resistance of valve less filtering mask NIOSH TEB-APR-STP-003
Inhalation & exhalation valve leakage test NIOSH TEB-APR-STP-004
PRespiratory Productive Device (Respiratory mask / N95) Visual Inspection IS 9473 / EN 149
Mechanical Strength
Practical Performance
Total inward Leakage
Flammability
Carbon dioxide Content of the inhalation air
Exhalation Valve Pull Test
Breathing Resistance- Inhalation & Exhalation
Penetration of Filter material (Nacl & Parafiin.oil)
Clogging test (only for Reusable mask)
Exhalation Valve Flow
Cleaning Disinfection
Field of Vision
Respiratory Productive Device (Respiratory mask / N95) Fit testing as per OSHAS 29 CFR 1910.134