The novel coronavirus outbreak is also fierce as the outbreak and continuous warming. It is known from all the media that wearing masks is an effective way to prevent virus transmission from ZUI. For a time, medical masks become a scarce resource, and the corresponding manufacturers are also in a tense and continuous increase in production. Because of the scarcity, many people began to use “cotton masks” and “self-made plastic masks” instead of medical masks. They thought that as long as the mouth and nose were covered, the virus could be prevented. However, there are reference standards for the design and production of medical masks. Only when the standards are met can they be regarded as masks that can effectively block the transmission of viruses. So, what standards do medical masks refer to? What are the corresponding test equipment?

What are the corresponding test equipment for medical masks?

The following are the main reference test standards for mask production in China as follows:

2626-2006 respiratory protective equipment

GB 19083 medical protective masks

GB / T 32610 daily protective masks

YY 0469 medical surgical mask

YY / T 0969 disposable medical mask

Labthink blue light is a high-tech enterprise specializing in the development and production of detection instruments. Several high-precision detection instruments produced by the company can be used for medical mask detection

Therefore, according to the requirements of the above standards, Languang company provides the following medical mask testing equipment:

1. Static breaking strength test:

GB 2626-2006 respiratory protective equipment: axial tension of breathing valve cover (10N, 10s or 50N, 10s), firmness of headband and mask body, axial tension of connecting and connecting parts, and no slippage, fracture and deformation are allowed;

GB 19083 medical protective mask: the breaking strength of the connection point between the mask belt and the mask body shall not be less than 10N;

GB / T 32610 daily protective respirator: the breaking strength of the mask belt and the joint between the mask belt and the mask body is greater than or equal to 20n;

GB / T 32610 daily protective respirator: the fastness of exhalation valve cover (10N, 10s) shall not be slippage, fracture and deformation;

YY 0469 medical surgical mask: the breaking strength of the mask belt is not less than 10N;

YY / T 0969 disposable medical mask with static tension not less than 10N;

The above are test items and requirements:

Recommended equipment: Labthink Languang XLW series intelligent electronic tensile testing machine + special test fixture

2. Detection of ethylene oxide residue:

GB 19083-2010 medical protective mask: the residual amount of respirator sterilized by ethylene oxide should not exceed 10 μ g / g. GB / T 32610-2016 daily protective masks: the masks treated with ethylene oxide shall be in accordance with Chapter 9 of GB / T 14233.1-2008. The residual content of ethylene oxide should not exceed 10 μ g / g. YY 0469 medical surgical mask: the residual amount of the mask sterilized by ethylene oxide should not exceed 10 μ g / g. YY / T 0969 disposable medical mask: if the mask is sterilized or sterilized with ethylene oxide, the residual ethylene oxide content shall not exceed 10 μ g / g.

The above are test items and requirements:

Recommended equipment: Labthink gc-6890 / gc-7800 gas chromatograph

3. The ventilation resistance and air permeability of the mask were tested

GB 2626-2006 respiratory protective equipment: the total inspiratory resistance of the mask is not greater than 350 PA and the total expiratory resistance is not more than 250 Pa; GB 19083 medical protective mask: the inspiratory resistance shall not exceed 343.2 PA (35mmh2o) under the condition of gas flow rate of 85L / min; GB / T 32610 daily protective masks: the inspiratory resistance of respirators is less than or equal to 175pa; the expiratory resistance is less than or equal to 145pa; YY 0469 Medical surgical mask: pressure difference is not more than 49pa YY / T 0969 disposable medical mask: ventilation resistance is not more than 49pa / cm2;

The above are test items and requirements:

Recommended equipment: Labthink blue tqd-g1 air permeability tester + professional customized fixture

The instrument can measure the pressure with constant flow, and detect the ventilation resistance and pressure difference of the mask.

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