What are the criteria for selecting and using disposable dust masks?

Nowadays, as the natural environment gets worse and worse, the air quality is getting worse and worse. People choose to wear masks when they travel. However, people choose masks that are disposable dust masks. How do dust masks meet? Standard, how should the user choose and use it? The small piece of disposable mask below will be introduced to the user, I hope to help everyone.

The occupational disease protection products provided by the employer for the individual workers must meet the requirements for the prevention and treatment of occupational diseases. Similarly, disposable dust masks used by workers engaged in and in contact with dust should also meet the requirements, and produce disposable dust masks in accordance with the standards of respiratory protection products GB2626-2006 promulgated by the State Administration of Quality Supervision, Inspection and Quarantine and the National Standardization Administration. The units must obtain production and business licenses in accordance with the law, and all production specifications of dust masks must comply with the corresponding standards. This standard specifies the production and technical specifications of respiratory protection products, and has strict requirements on anti-fog mask materials, structure, appearance, performance, filtration efficiency (dust resistance), respiratory resistance, testing methods, product identification, packaging, etc. The anti-fog mask material must be non-irritating and non-allergenic to the skin, and the filter material is harmless to the human body; the structure of the dust mask should be convenient to use and the like.

The standard divides the dust mask into oil-based dust mask KP and non-oil dust mask KN; and according to the performance of the dust-proof original and the dust-proof rate, it is divided into KN90, KN95, KN100, KP90, KP95, KP100 The class filtration efficiency is 90%, 95%, and 99.97%, respectively. KP type is suitable for anti-oily dust, such as paraffin, jade oil and so on.

KN type is suitable for non-oily dust, such as salt, quarry, coal mine, cement, etc. The larger the number in the model, the higher the dust resistance and the higher the dust safety factor. When purchasing, choose the mask you want for the dust concentration in different environments.

The GB2626-2006 standard also specifies the standard coefficient of inspiratory resistance and expiratory resistance of the dust mask. Workers should wear a dust mask and feel comfortable. They can easily exhale and inhale without any feeling of poor breathing. Normally, the respiratory rate is 20 times per minute. The constant coefficient of ventilation for exhalation and inspiratory resistance is 85 (±1) liters / minute.

The purchase of disposable dust masks, in addition to the government-issued sales of protective equipment to buy a special store to buy a license, but also according to the GB2626-2006 standard for the working environment dust type, concentration and dust particle diameter selection The type of dust mask required (such as oily/non-oily dust masks, required models, etc.). The above six types of dust masks are suitable for dust concentrations not higher than 200mg/m3. If the dust concentration is higher than this standard, dust removal equipment such as ventilation and exhaust should be used to reduce the dust concentration in the working environment. According to the research, particles below 2 microns will directly enter the lungs through the respiratory system, causing damage to the lungs; dust concentration is high, dust particles less than 2 microns, dust masks with high dust-proof rate, such as Baoshunan KN100 These models, the KP100, block small dust and reduce lung damage to workers. Dust mask selection is still recommended at a high level such as: KN100 is best.