Frequently Asked Questions

What are the mask certifications?

NIOSH N95, CE EN149 FFP2, AS/NZS 1716 P2

Is the mask washable?

No, this is a disposable dust mask. It cannot be washed.

How many times can the disposable mask be used and how long will it last?

Disposable dust masks are designed for single use only, for a maximum of 8 hours or less, depending on the environment, use, policies, procedures and expertise, contamination, institution and geographic region surrounding the applications. After each wear, the mask should be discarded. Instructions supplied with the mask must be strictly adhered to. Heavy concentrations of use in hazardous conditions will severely affect efficacy. 

What are some of the limitations of a dust mask / particulate respirator?

  1. The N95 respirator must not be used if there is oil or toxic substances in the atmosphere or the possibility of anything equivalent.
  2. The N95 respirator does not allow much oxygen inside; those with lung diseases or other equivalent conditions must not use them.
  3. The N95 respirator must also not be worn if the atmosphere oxygen content is considered low or less than 19.5%.
  4. Even certain adults may find it difficult to use the N95 respirators for long periods of time because of the difficulty in breathing and tight fit. Note that according to the FDA's report on masks and respirators, the N95 respirator is not advisable for use in young children. 
  5. If in doubt about acceptability of use, it is recommended that you consult a medical professional.   

How can a user check the level of protection for a respirator?

For NIOSH approved respirators, the type of approval/protection will be printed on the respirator itself. Users can also verify that approval has been given by visiting the NIOSH website (what is correct link).

Do N95 respirators come in different styles?

Filtering face piece respirators are available in a wide range of colors, shapes and styles. Some styles will fit individuals better than others and certain styles may be more comfortable and have better fitting characteristics.

Why do some N95 respirators have an exhalation valve on the front?

The use of an exhalation valve reduces resistance, which makes it easier to breath (exhale). Some users feel a respirator with an exhalation valve keeps the face cooler and reduces moisture build up inside the face piece.

What is the function of the active carbon on the dust mask?

The main function is to reduce the odor that is related to the atmosphere.

How do you dispose of the used N95 respirators?

Be sure to follow instructions related to workplace safety hazard management guidelines as mandated by government, industry, workplace and regional bylaws.Avoid direct contact with the used respirator. Insert into a plastic bag, carefully wrap and seal then dispose of in a covered refuse container. 

There are many different types of respirator face masks: N95, KN95, FFP2, P2. How are they different?

N95, KN95, FFP2 and P2 refers to the compliance standards of masks. They do not refer to the brand, model or function but, rather, to standard conformance.

Face mask standards currently defined in the world:

  • N95 (United States NIOSH-42CFR84)
  • FFP2 (Europe EN149-2001)
  • KN95 (China GB2626-2006)
  • P2 (Australia/New Zealand AS/NZA1716:2012)
  • Korea 1st class (Korea KMOEL -2017-64)
  • DS (Japan JMHLW-Notification 214,2018)

Overview of the various standards:

Certification / Class (Standard) N95 (NIOSH-42C FR84) FFP2 (EN 149-2001) KN95 (GB2626-20 06) P2 (AS/NZ 1716:2012) Korea 1st Class (KMOEL – 2017-64) DS (Japan JMHLW-Notification 214, 2018)
Filter performance – (must be ≥ X% efficient) ≥ 95% ≥ 94% ≥ 95% ≥ 94% ≥ 94% ≥ 95%
Test agent NaCl NaCl and paraffin oil NaCl NaCl NaCl and paraffin oil NaCl
Flow rate 85 L/min 95 L/min 85 L/min 95 L/min 95 L/min 85 L/min
Total inward leakage (TIL)* – tested on human subjects each performing exercises N/A ≤ 8% leakage (arithmetic mean) ≤ 8% leakage (arithmetic mean) ≤ 8% leakage (individual and arithmetic mean) ≤ 8% leakage (arithmetic mean) Inward Leakage measured and included in User Instructions
Inhalation resistance – max pressure drop ≤ 343 Pa ≤ 70 Pa (at 30 L/min)
≤ 240 Pa (at 95 L/min)
≤ 500 Pa (clogging)
≤ 350 Pa ≤ 70 Pa (at 30 L/min)
≤ 240 Pa (at 95 L/min)
≤ 70 Pa (at 30 L/min)
≤ 240 Pa (at 95 L/min)
≤ 70 Pa (w/valve)
≤ 50 Pa (no valve)
Flow rate 85 L/min Varied – see above 85 L/min Varied – see above Varied – see above 40 L/min
Exhalation resistance – max pressure drop ≤ 245 Pa ≤ 300 Pa ≤ 250 Pa ≤ 120 Pa ≤ 300 Pa ≤ 70 Pa (w/valve)
≤ 50 Pa (no valve)
Flow rate 85 L/min 160 L/min 85 L/min 85 L/min 160 L/min 40 L/min
Exhalation valve leakage requirement Leak rate ≤ 30 mL/min N/A Depressurization to 0 Pa ≥ 20 sec Leak rate ≤ 30 mL/min visual inspection after 300 L /min for 30 sec Depressurization to 0 Pa ≥ 15 sec
Force applied - 245 Pa N/A -1180 Pa -250 Pa N/A -1,470 Pa
CO2 clearance requirement N/A ≤ 1% ≤ 1% ≤ 1% ≤ 1% ≤ 1%


Filter performance – the filter is evaluated to measure the reduction in concentrations of specific aerosols in air that pass through the filter.

Test agent – the aerosol that is generated during the filter performance test.

Total inward leakage (TIL) – the amount of a specific aerosol that enters the tested respirator face piece via both filter penetration and face seal leakage while a wearer performs a series of exercises in a test chamber.

Inward leakage (IL) – the amount of a specific aerosol that enters the tested respirator face piece while a wearer performs normal breathing for three minutes in a test chamber. The test aerosol size (count median diameter) is about 0.5 micrometer.

Pressure drop – the resistance air is subjected to as it moves through a medium such as a respiratory filter.

The above table may be used as a guidance or an overview for determining selection on different standards testing which are applicable to face mask respirators filtering non oil-based particles such as those resulting from wildfires, air pollution, volcanic eruptions or bioaerosols (e.g. viruses).

Our face mask product solutions are designed to keep individuals safe from polluted air and/or contaminations infused with bacteria and/or viruses. They are ethylene oxide sterilized, carry accompanying international certifications (CE, Niosh, FDA, ANSI, En149:2001 Certified) and are produced via sophisticated automated manufacturing assembly lines with quality assured. In addition, quality control at various stages of production ensures adherence to strict quality standards. Products are applicable to worldwide markets with certifications specific to different global regions (for example CE, ETL and UL standards). Our in-house ISO:9001:2008 quality management systems are consistently compliant to keep up with industry standards.

Prior to selecting a face mask respirator, users should consult their local respiratory protection regulations and requirements and/or check with their local public health authorities, medical professionals and health care technical specialist legal advisors for selection guidance. Specifications are subject to change without notice. The information provided above is meant to serve as a resource but, given the rapidly changing global situation regarding COVID-19, errors and omissions may inadvertently result.


All prices quoted are in US dollars. Prices are subject to change without notice, depending on supply and other market factors.


We warranty our materials and workmanship.We are committed to customer satisfaction by working to resolve issues in a timely manner.