PM2.5 protective mask
1 Scope
This standard specifies the terms and definitions, classification, grading and designation, technical requirements, test methods, product instruction and packaging of PM2.5 protective masks.
This standard is applicable to the masks worn by the public in daily life to prevent the inhalation of PM2.5 in the air.
This standard is not applicable to the protection against inhalation of harmful gases and vapors, and is not applicable to the dust masks used for anoxic environment, escape, fire fighting, medical care or other professions.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GBZ 1-2010 Hygienic standards for the design of industrial enterprises
GB 2626-2006 Respiratory protective equipment - Non-powered air-purifying particle respirator
GB/T 2912.1 Textiles - Determination of formaldehyde - Part 1: Free and hydrolyzed formaldehyde (water extraction method)
GB 3095-2012 Ambient air quality standards
GB/T 5703 Basic human body measurements for technological design
GB/T 7573 Textiles - Determination of pH of aqueous extract
GB 15979 Hygienic standard for disposable sanitary products
GB/T 17592 Textiles - Determination of the banned azo colorants
GB/T 18664-2002 Selection, use and maintenance of respiratory protective equipment
GB/T 23344 Textiles - Determination of 4-aminoazobenzene
HJ 633-2012 Technical regulation on ambient air quality index (on trial)
HJ 653-2013 Specifications and test procedures for ambient air quality continuous automated monitoring system for PM10 and PM2.5
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
mist
tiny droplets suspending in the air
[GB/T 18664-2002, Definition 3.1.18]
3.2
haze
a kind of meteorologic phenomenon formed by the smoke dust suspending in the air
3.3
aerodynamic diameter
the diameter of a sphere with unit density (ρ0=1g/cm3) when it attains the same ultimate settlement speed as the actual particles during its movement at low Reynolds in still air
[HJ 653-2013, Definition 3.1]
3.4
PM2.5
particle with the aerodynamic diameter less than or equal to 2.5μm in ambient air, which is also referred to as fine particle
[GB 3095-2012, Definition 3.4]
Foreword I
1 Scope
2 Normative references
3 Terms and definitions
4 Classification, grading and designation
5 Technical requirements
6 Test methods
7 Inspection rules
8 Product instruction and packaging
9 Storage and transportation
Annex A (Informative) Guiding suggestions on selection and application
Annex B (Informative) Main dimensions of test headforms
