Protective Mask Kn95

KN95 is China standard masks
From China national standard GB 2626-2006 "respiratory protective equipment self-priming prevent particulate respirator filter type"

(1) the standard source

This standard is mandatory national standards in China, put forward by state administration of work safety (saws), by the national individual protective equipment standardization technical committee (SAC/TC 112) under centralized.

(2) the technical content

From the scope of view, this standard applies to ordinary protection self-priming filter type respiratory protective equipment of all kinds of particles, the typical such as masks and other special environment (such as oxygen environment, underwater operation, etc.) shall not apply

From particulate matter definition, this standard defines the particles of various forms, such as dust, smoke, fog, and microorganisms, but not for the size of the particles.

From the filter element level, can be divided into oily and filter non oily particles KN type and non oily particles of KP, and as a mark, and the explanation of CFR 42-84-1995. Similar guidelines of N and R/P.

Filter element type

Mask the category

Mask with abandon

Replaceable type half mask

The comprehensive cover

KN type

KN90

KN95

KN100

KN90

KN95

KN100

KN95

KN100

KP class

KP90

KP95

KP100

KP90

KP95

KP100

KP95

KP100

From the point of filtration efficiency, this standard and the explanation of CFR 42-84-1995 N series of masks similar guidelines:

Filter element categories and levels

With sodium chloride particles detection

With oil particles detection

KN90

90.0% or higher

Do not apply

KN95

95.0% or higher

KN100

99.97% or higher

KP90

Do not apply

90.0% or higher

KP95

95.0% or higher

KP100

99.97% or higher

In addition, there are general requirements of GB 2626-2006, appearance inspection, leak, respiratory resistance, exhalation valve, dead space and field of vision, headband, connection and connecting parts, lens, air tightness, flammability, cleaning and disinfection, manufacturers should provide information, packing and other technical requirements.