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GB 19083-2010 (GB19083-2010)

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GB 19083-2010: PDF in English
GB 19083-2010
ICS 11.100
C 44
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replacing GB 19083-2003
Technical Requirements for Protective Face
Mask for Medical Use
ISSUED ON: SEPTEMBER 2, 2010
IMPLEMENTED ON: AUGUST 1, 2011
Jointly issued by: The General Administration of Quality Supervision,
Inspection and Quarantine (AQSIQ);
Standardization Administration Committee (SAC) of The
People’s Republic of China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative References ... 4 
3 Terms and Definitions ... 6 
4 Technical Requirements ... 6 
5 Test Methods ... 8 
6 Markings and Instructions for Use ... 11 
7 Packaging And Storage ... 13 
Appendix A (Informative) Preparation of Synthetic Blood ... 14 
Appendix B (Normative) Fitness Test Method ... 16 
References and Original Chinese Documents ... 19 
Foreword
In this Standard, Section 4.10 is recommendatory and other Sections are mandatory.
This Standard replaces GB 19083-2003 "Technical Requirements for Protective Face
Mask for Medical Use".
Compared with GB 19083-2003, this Standard has the major changes detailed as follows:
——The applicable “Scope” of the standard was revised;
——The "Normative References” was supplemented and revised;
——The terms and definitions were added and changed;
——The dimensional requirement of mask was deleted;
——The length requirement of nasal splint was deleted;
——The "Fit" requirement and test method were added;
——The technical requirement of "Skin irritation" was revised according to GB/T
16886.10-2005 and the test method was defined;
——The technical requirement of markings and instructions for use was deleted;
——The original test method for oxirane residue specified in GB 15980-1995 was
replaced by the gas chromatography method of GB/T 14233.1-2008;
——The test method of microorganism indexes was revised.
In this Standard, Appendix B is normative and Appendix A is informative.
This Standard was proposed by State Food and Drug Administration.
This Standard is under the jurisdiction of the National Technical Committee on Clinical
Laboratory Testing and Invitro Diagnostic Test Systems of Standardization Administration of
China.
Drafting organization of this Standard: Beijing Institute of Medical Device Testing
Chief drafting staffs of this Standard: Su Jian, Bi Chunlei, Liao Xiaoman and Zhang
Zhaoyuan.
The previous standard replaced by this standard is:
——GB 19083-2003.
NATIONAL STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Replace 19083-2003
Technical Requirements for Protective Face Mask
for Medical Use
1 Scope
This Standard specifies the technical requirements, test methods, markings and
instructions for use, packaging, transportation and storage for protective face mask for
medical use (hereinafter referred as mask).
This Standard is applicable to non-powered air-purifying medical protective face mask -
used in medical service environments to filter particulate matters in air and to separate spray,
blood, body fluid, secretion, etc.
2 Normative References
Those provisions contained in following documents, through quotation of this Standard,
constitute the provisions of this Standard. For dated document, subsequent amendments
(excluding the corrections) or revisions of the document do not apply. However, parties who
have signed agreement based on these standards are encouraged to investigate the possibility
of adopting the most recent editions of the standards indicated below (subsequent
amendments or revisions). For any undated documents, the latest edition of the document
applies.
GB/T 191 Packaging-Pictorial Marking for Handling of Goods
GB/T 2428-1998 Head-face Dimensions of Adults
GB/T 4745-1997 Textile Fabrics-Determination of Resistance to Surface Wetting-Spray
Test
GB/T 5549-1990 Surface Active Agents Determination of Surface Tension by Drawing
up Liquid Films
GB/T 14233.1-2008 Test Methods for Infusion, Transfusion, Injection Equipments for
Medical Use-Part 1: Chemical Analysis Methods
GB/T 14233.2-2005 Test Methods for Infusion, Transfusion, Injection Equipment for
Medical Use-Part 2: Biological Test Methods
GB 15979-2002 Hygienic Standard for Disposable Sanitary Products
GB/T 16886.10-2005 Biological Evaluation of Medical Devices-Part 10: Tests for
Irritation and Delayed-type Hypersensitivity
GB/T 18664-2002 Selection, Use and Maintenance of Respiratory Protective Equipment
YY/T 0691-2008 Clothing for Protection against Infectious Agents-Medical Face
Masks-Test Method for Resistance against Penetration by Synthetic Blood (Fixed Volume,
Horizontally Projected)
YY/T 0700-2008 Clothing for Protection against Contact with Blood and Body
Fluids-Determination of the Resistance of Protective Clothing Materials to Penetration by
Blood and Body Fluids-Test Method Using Synthetic Blood
3 Terms and Definitions
For the purposes of this Standard, the following terms and definitions apply.
3.1
Filtering efficiency
The percentage number of filtering particulate matters in air under specified conditions
3.2
Fit
The degree of mask periphery fitting to the face of a specific user
3.3
Fit factor
The ratio of the testing agent’s concentration outside the mask to the testing agent’s
concentration leaking into the mask, which is quantitatively measured during the testees
wearing masks for simulating actions, process and operation
4 Technical Requirements
4.1 Basic requirement of mask
The mask shall cover the wearer's nose and mouth and shall be of a good facial fit and
without broken holes, stain or expiratory valve.
4.2 Nasal splint
4.2.1 The mask shall have a nasal splint.
4.2.2 The nasal splint shall be adjustable.
4.3 Mask harness
4.3.1 The mask’s harness shall be adjustable conveniently.
4.3.2 The mask’s harness shall be of sufficient strength to fix the mask. The breaking strength
of the junction between each mask harness and the mask body shall not be less than 10N.
4.4 Filtering efficiency
With the gas flow at 85L/min, the filtering efficiency of mask to non-oily particles shall
comply with the requirements specified in Table 1.
Table 1 Filtering Efficiency Gradation
Gradation Filtering efficiency %
Grade 1 ≥95
Grade 2 ≥99
Grade 3 ≥99.97
4.5 Gas flow resistance
With the gas flow at 85L/min, the mask inspiration resistance shall not exceed 343.2Pa
(35mmH2O).
4.6 Synthetic blood penetration
With spraying 2mL synthetic blood on the mask at 10.7 kPa in pressure, no penetration
shall occur to the inner side of the mark.
4.7 Surface wetting resistance
The outside surface spray rating of the mask shall not be less than those specified in
Grade 3 of GB/T 4745-1997.
4.8 Microorganism indexes
4.8.1 The mask shall meet the microorganism index requirement of GB 15979-2002, as
detailed in Table 2.
4.8.2 Masks with letters concerning sterilization or asepsis marked on the packaging shall be
aseptic.
Table 2 Microorganism Indexes of Mask
Total bacterial
colony count
CFU/g
Coliform
bacteria
Pseudomonas
aeruginosa
Staphylococcus
aureus
Hemolytic
streptococcus
Total fungus
colony count
CFU/g
≤200 Not detectable Not detectable Not detectable Not detectable ≤100
4.9 Oxirane residue
The oxirane residue of oxirane-sterilized masks shall not exceed 10μg/g.
4.10 Flame retardation
The materials used shall not be of flammability and their continuous-flaming time shall
not exceed 5s.
4.11 Skin irritation
The primary irritation scoring of the mask materials shall not exceed 1.
4.12 Fit
The mask shall be so designed to provide a good fit and the overall fit factor of the mask
shall not be less than 100.
5 Test Methods
5.1 Basic requirement of mask
Take 3 masks and observe at 300 lx~700 lx. They shall meet the requirement of 4.1.
5.2 Nasal splint
It shall be adjusted as specified in the instructions and shall comply with 4.2.
5.3 Mask harness
5.3.1 Sample quantity: take and unpack 4 masks – two of them shall undergo temperature
pretreatment; and the other two do not undergo temperature pretreatment.
5.3.2 Condition for temperature pretreatment:
Pretreatment condition:
a) Keep in 70℃±3℃ environment test chamber for 24h;
b) Keep in-30℃±3℃ environment test chamber for 24h.
After temperature pretreatment, keep at room temperature for at least 4h.
5.3.3 The result of visual inspection and the result measured by tension test device shall meet
the requirement of 4.3.
5.4 Filtering efficiency and gas flow resistance test
5.4.1 Sample quantity: take 6 mask samples for the test. Three of them shall undergo
temperature pretreatment and the other three do not undergo temperature pretreatment.
5.4.2 Condition for temperature pretreatment:
Pretreatment condition:
a) Keep in 70℃±3℃ environment test chamber for 24h;
b) Keep in-30℃±3℃ environment test chamber for 24h.
After temperature pretreatment, keep at room temperature for at least 4h.
5.4.3 The gas flow shall be stabilized 85L/min±2L/min.
The distribution of particle size of sodium chloride (NaCl) aerosol used under the
specified test condition shall be such that the count median diameter (CMD) is
0.075μm±0.020μm, geometric standard deviation does not exceed 1.86 (equivalent to
0.24μm±0.06μm in mass median aerodynamics diameter (MMAD)), and concentration does
not exceed 200 mg/m3.
5.4.3.1 The determination results of filtering efficiency shall meet all the requirements of 4.4.
5.4.3.2 The determination results of inspiration resistance shall meet all the requirements of
4.5.
5.5 Synthetic blood penetration
5.5.1 Sample quantity: 5 mask samples shall be taken for the test.
5.5.2 Pretreatment condition: the mask samples shall undergo pretreatment for at least 4h in
an environment test chamber at 21℃±5℃ in temperature and 85%±5% in relative humidity.
The test shall be carried out within 1min after the mask samples' withdrawal from the
chamber.
5.5.3 As the test is carried out in accordance with the test method in YY/T 0691-2008, the
result shall meet those provisions specified in 4.6. See Appendix A for the preparation of
synthetic blood.
5.6 Surface wetting resistance test
Three masks shall be taken for the test. As the test is carried out by reference to the
method specified in GB/T 4745-1997, the result shall meet the requirement of 4.7.
5.7 Microorganism index
5.7.1 As the test is carried out in accordance with the method specified in Appendix B of GB
15979-2002, the result shall meet the requirement of 4.8.1.
5.7.2 Masks marked as sterilized and aseptic shall undergo the test in accordance with the
method specified in GB/T 14233.2-2005 and the result shall meet the requirement of 4.8.2.
5.8 Oxirane residue
5.8.1 Gas chromatograph condition
The gas chromatograph shall meet the following conditions:
a) Hydrogen flame detector: not less than 2×10-11g/s in sensitivity [benzene, carbon
bisulfide (CS2)].
b) Chromatographic column: the chromatographic column used shall be such that the
impurities in the specimen can be completely separated from oxirane and shall be, to some
extents, water resistant. The chromatographic column may select the conditions recommended
in Table 3.
Table 3 Recommended Conditions for Chromatographic Column
Column length Inside diameter Supporter Column temperature
1m~2m 2mm~3mm
GDX-407 177μm~147μm(mesh: 80~100) About 130℃
Porapak q-s 177μm~147μm(mesh: 80~100) About 120℃
c) Temperature of apparatus components
Chamber of gasification: 200℃;
Test chamber: 250℃.
d) Gas flow
N2: 15mL/min~30mL/min;
H2: 30mL/min;
Air: 300mL/min.
5.8.2 Test procedure
Parallel tests shall be carried out with water as the solvent and in accordance with 9.4 of
GB/T 14233.1-2008 and the exhaustive extraction method specified in Appendix G of GB
15980-1995. And the determination shall be carried out in accordance with 9.5.2 of GB/T
14233.1-2008 and relative content method specified in Appendix G of GB 15980-1995. The
results shall be calculated in arithmetic mean. For example, if a portion is qualified while the
other is unqualified, mean calculation shall not be carried out and redetermination shall be
carried out.
The results shall meet the requirement of 4.9.
5.9 Flame retardation
5.9.1 Sample quantity: take 4 mask samples for the test. Two of them shall undergo
temperature pretreatment and the other two do not.
5.9.2 Condition for temperature pretreatment:
Pretreatment condition:
a) Keep in air at 70℃±3℃ for 24h;
b) Keep in air at -30℃±3℃ for 24h.
After temperature pretreatment, keep at room temperature for at least 4h.
5.9.3 Procedure:
5.9.3.1 Put the mask on a metal head model. The distance between the burner top and mask
bottom (with the mask located directly towards the burner) shall be 20mm± 2mm.
5.9.3.2 The flame height shall be adjusted to 40mm± 4mm. The flame temperature measured
with a metal-isolated thermocouple probe and at 20mm± 2mm above the burner top shall be
800℃±50℃.
5.9.3.3 Let the head model pass through the flame at lineal speed 60mm/s±5mm/s and record
the combustion states of the mask after each passing. The result shall meet the requirement of
4.10.
5.10 Skin irritation
As the test is carried out in accordance with the primary skin irritation method specified
in GB/T 16886.10-2005, the result shall meet those requirements specified in 4.11 of this
Standard.
5.11 Fit
Select 10 testees; put on the masks in accordance with the instructions for use; perform 6
required actions. At least 8 testees, tested by the method specified in Appendix B, shall meet
the requirement of the overall fit factor.
6 Markings and Instructions for Use
6.1 Markings
6.1.1 Marking on the smallest package of mask
The smallest package of mask shall include at least the following clear and
distinguishable markings. If the package is transparent, these markings shall be visible
through the package.
a) Product name and model;
b) Name of manufacturer or supplier;
c) Reference to standard;
d) Product registration number;
e) Filter material grade or description;
f) Letters or symbols indicating "Refer to Instructions for Use before Use";
g) Storage conditions and guarantee period;
h) Letters indicating "Disposable" or equivalent shall be marked on disposable
products;
i) The sterilization validity period and sterilization mode shall be indicated on sterilized
products.
6.1.2 Marking on packing container:
The packing container shall be provided at least with the following details or marks:
a) Name and address of manufacturer or supplier;
b) Product name and model;
c) Reference to standard;
d) Product registration number;
e) Specification and quantity;
f) Production date or batch number;
g) Lettering and marking like Sun Protection and Keep Dry (the marking shall meet
those specified in GB/T 191);
h) Storage conditions and validity period.
6.2 Instructions for use
The instructions for use shall be at least in Chinese and shall provide the following
details:
a) Application and service restrictions;
b) Denotation of product color code (if applicable);
c) Inspection required before use;
d) Wear fitness;
e) Usage;
f) Storage conditions;
g) Implication of symbol and (or) diagram applied;
h) Possible problems and cautions;
i) Recommendation on service time of mask;
j) Reference to standard;
k) Product registration number.
7 Packaging And Storage
7.1 Packaging
7.1.1 The packaging shall prevent mask from mechanical damage and pollution before use.
7.1.2 The masks shall be encased as per quantity.
7.2 Storage
The storage shall be carried out according to the instructions for use.
Appendix A (Informative)
Preparation of Synthetic Blood
A.1 Reagents
Prepare 1L synthetic blood according to the following composition:
Carboxymethyl cellulose sodium [e.g., CMC-Sigma 9004-32-4 medium viscosity] 2g
Polyoxyethylene (20) sorbitan monolaurate {e.g., Tween-20[Fluka 9377]} 0.04g
Sodium chloride (analytical grade) 2.4g
Amaranth dye [e.g., Sigma 915-67-3](915-67-3) 1.0g
Monopotassium phosphate (KH2PO4) 1.2g
Disodium hydrogen phosphate (Na2 HPO4) 4.3g
Distilled water or deionized water To 1L
Note 1: 2-Methyl-4-isothiazolin-3-one hydrochloride (MIT) (0.5 g/L) may be added in the synthetic blood to extend the
storage period of the solution.
Note 2: Sigma 9004-32-4, Fluka 9377, Sigma 915-67-3 and Fluka 9377 are examples for applicable commercial products.
This information allows for the user of this Standard but not represents the recognition of those products.
A.2 Preparation
Make carboxymethyl cellulose sodium dissolved in 0.5 L water and make them mixed
completely with a magnetic stirrer for 60min.
Use a small beaker to weigh Tween 20 and make it completely mixed with water.
Add the Tween 20 solution in the carboxymethyl cellulose sodium solution. The beaker
shall be cleaned with distilled water for several times and the water used shall be incorporated
in the former solution.
Make NaCl dissolved in the solution. Make KH2PO4 and Na2HPO4 dissolved in the
solution.
Add MIT (if applied) and amaranth dye.
Dilute the solution with water to approximately 1000mL.
Regulate the synthetic blood to pH 7.3 ± 0.1 and scale to 1000mL with phosphate buffer.
As the surface tension of synthetic blood is measured in compliance with GB/T
5549-1990, the result shall be 0.042N/m±0.002N/m.
Appendix B (Normative)
Fitness Test Method
B.1 Test environment
The test space size shall allow for the testee to perform specified testing actions freely.
The number of particles in air shall not be less than 70×106 particles/m3If the number of
particles is too small, an aerosol generator may be adopted to increase the particles in
environment and as for the particles from the aerosol generator, the count median diameter
(CMD) is about 0.04μm and geometric standard deviation is about 2.2 (equivalent to 0.26μm
in mass median aerodynamics diameter (MMAD)). If sodium chloride aerosol is used, the
relative humidity of air shall not be greater than 50%.
B.2 Installing mask sampling tube
Puncture at the location "respiratory area", near to the wearer's mouth and nose, to install
a sampling tube. The sampling tube shall be mounted on the neck support device of testee to
reduce the interference to the mask in the test process.
B.3 Test procedure
Select 10 testees with men and women in fifty-fifty percent respectively. Their
headforms shall be in compliance with the Chinese headform series of GB/T 2428-1998. For
male, their beard shall be shaved. Wear the mask according to the instructions for use. Before
testing, inspection for moving of mask, over-looseness or over-tightness of mask harness,
fitness of nasal splint for nose bridge and leakage from mask periphery shall be carried out.
No readjustment is allowed in the test process. The testees are required to perform the
following 6 actions, each of which shall last for 1min:
a) Normal respiration——keep standing, normal respiration speed and speechless.
b) Deep breathing ——keep standing, take a deep breath gradually, do not exhale
excessively.
c) Turning left and right——keep standing, turn head to one side until to the extreme
position and then turn to the other side. At each extreme position, inspiration shall be
performed.
d) Turning up and down——head down slowly and then up slowly. At the upper
extreme position, inspiration shall be performed.
e) Speaking ——speak loudly and slowly. Ask the testees to count down from 100 or
read an article.
f) Normal respiration ——see a).
B.4 Calculating fit factor
B.4.1 The fit factor of each action is calculated from the ratio of the mean concentration of
particles outside the mask to that inside the mask, which is determined through calculation.
B.4.2 The mean concentration of particles outside the mask may adopt the arithmetic mean of
the before-and after-test (6 actions) concentrations or the mean concentration before and after
each action, or the actual mean of continuous measurement.
B.4.3 The concentration of particles inside the mask shall be calculated as follows:
a) Mean peak penetration method: use recorder, integrator or computer to determine the
number of particles that passed through the mask. In each action, work out the mean peak
height from the recording paper or integrate with computer to determine the number of
particles. Selectively, use an integrator or computer to work out the actual number of particles
that passed through the mask.
b) Maximum peak penetration method: use banding recorder to determine the number
of particles that pass through the mask. The peak of each required action represents the mean
number of particles that passed through the mask for the action.
c) Area integration method: integrate the area of the peak of each action. It includes
computer integration.
d) Overall fit factor calculation: convert the fit factors of each action to penetration
values and work out their mean which is then reconverted to fit factor, as detailed in Formula
(B.1).
fedcba ffffffffffff
FF /1/1/1/1/1/1
 (B.1)
Where:
FF——the overall fit factor;
ffa——the fit factor of normal respiration;
ffb——the fit factor of deep breathing;
ffc——the fit factor of turning-left and right;
ffd——the fit factor of turning-up and down;
ffe——the fit factor of speaking;
fff——the fit factor of normal respiration.
References and Original Chinese Documents
[1] GB 19083-2010 Technical requirements for protective face mask for medical use.
......
(Above excerpt was released on 2014-03-15, modified on 2021-06-07, translated/reviewed by: Wayne Zheng et al.)
Source: https://www.chinesestandard.net/PDF.aspx/GB19083-2010