KN95 Dust Mask have standard for TCVN Vietnam, EN149 EU European, GB2626 china standard

KN95 Dust Mask is a protective mask that complies with the KN95 level specified in China’s national standard GB2626-2019. It is mainly used to filter non-oily airborne particles, such as dust, smoke, and microorganisms. With a filtration efficiency of 95% or higher, it effectively protects the wearer’s respiratory health.
For the products mentioned above, you can click below to learn more about detailed product specifications.

Technical Principles and Filtration Mechanism

The core of the KN95 mask lies in its multi-layer filtration structure, which typically includes an outer non-woven fabric layer, a middle electrostatic melt-blown layer, and an inner skin-friendly non-woven layer.

• The outer layer primarily blocks droplets and large particles.

• The middle electrostatic melt-blown layer is the key filtration layer, capturing fine particles such as PM2.5 and virus carriers through electrostatic adsorption.

• The inner layer enhances comfort and reduces skin irritation.

This multi-layer design combines mechanical filtration and electrostatic adsorption, achieving a balance between high filtration efficiency and low breathing resistance.

Application Scenarios and Industry Demand

KN95 masks are widely used across various industries, especially in environments with high concentrations of dust or harmful particles.

• In the petrochemical industry, workers may be exposed to toxic chemicals or dust.

• In firefighting, rescue personnel must deal with smoke and hazardous gases.

• On construction sites, workers often face concrete dust and metal particles.

In addition, KN95 masks are standard protective equipment in the medical, pharmaceutical, and food processing industries, helping prevent cross-contamination or product pollution.

Industry Standards and Certification Requirements

According to China’s national standard GB2626-2019, KN95 masks must pass a series of strict tests, including filtration efficiency, breathing resistance, leakage rate, and wearing comfort.

• Filtration efficiency must reach 95% or above when tested with 0.3-micron particles.

• Inhalation resistance must not exceed 350 Pa, and exhalation resistance must not exceed 250 Pa.

• Masks must also pass leakage rate tests to ensure a tight facial seal and minimize air leakage.

Only masks that meet all these requirements are granted KN95 certification. Consumers can verify compliance through the markings on the packaging or inspection reports.

Purchasing and Usage Notes

• Certification Label: Choose products clearly labeled “GB2626-2019 KN95” on the packaging to avoid uncertified or counterfeit masks.

• Fit Test: Before wearing, adjust the nose clip and straps to ensure a snug fit with no air leakage. Press along the mask edges with both hands to check for leaks.

• Replacement Cycle: KN95 masks are single-use products and should generally be replaced every 4–8 hours, depending on environmental pollution levels. Replace immediately if the mask becomes damp, deformed, or noticeably harder to breathe through.

• Storage Conditions: Unused masks should be stored in a dry, well-ventilated place, away from direct sunlight and high temperatures to prevent material degradation.

Supporting Equipment and Extended Applications

In extremely polluted or high-risk environments, KN95 masks can be used together with goggles, protective clothing, and other equipment for comprehensive protection. For example, during epidemic periods, medical staff often wear KN95 masks together with surgical masks to enhance protection.
Some KN95 masks are designed with exhalation valves, which reduce breathing resistance and improve comfort during long-term wear. However, valve-equipped masks are not suitable for situations requiring strict two-way protection, such as medical isolation areas.

Currently, we have this type of product available in our store. Our KN95 dust masks comply with national standards, are equipped with exhalation valves, allow convenient filter replacement, have a wide range of applications, come in carton packaging, and are shipped quickly. Feel free to contact us for more information.