Appearance masks appearance should be clean and in good shape, the surface shall not have damaged, stain.
Wore a good structure and size, should be able to cover the wearer's mouth and nose to the jaw.
Should comply with the design size, the maximum deviation should be no more than plus or minus 5%.
Nose clip masks should be equipped with a nose clip, nose clip has a plastic material.
Nose clip length should be no less than 8.
With masks masks should be worn to take easy.
Each mask belt in the breaking strength of mask body join points should be not less than 10 n.
Bacteria filtration efficiency (
Masks of bacteria filtration efficiency shall be not less than 95%.
With the YY - 0469
2011 medical surgical masks bacteria filtration efficiency of the same)
Bacteria filtration efficiency test of gas flow rate control in 28.
3 l/min, the use of strains of staphylococcus aureus ATCC 6538, the average particle diameter of bacterial aerosols
Mask ventilation resistance two side gas exchange of ventilation resistance should be not more than 49 pa/cm after.
Ventilation resistance test to test the mask center, test gas flow should be adjusted to (
L/min, sample test area is 25 mm in diameter, test sample test area is A.
Mask was determined by differential pressure gauge or equivalent equipment pressure difference on both sides, according to the formula Δ P = M/A ventilation resistance calculation.
Test samples per square centimeter area of pressure difference, the unit to per square centimeter (
Test samples of differential pressure value, the unit for palmer (
The test sample test area, the unit is square centimeter.
Microbial indicators of sterilization mask shall meet the following requirements: the total number of bacterial colonies (
CFU / g)
Coliform bacteria, pseudomonas aeruginosa, staphylococcus aureus, hemolytic streptococcus and fungi, such as: must not be checked out.
Sterilization mask should be sterile.
Ethylene oxide residues mask such as ethylene oxide sterilization or disinfection, the ethylene oxide residues should be no more than 10 mu g/g.
Biological evaluation of cytotoxicity: cytotoxicity of mask should not greater than 2.
Skin irritation: mask of primary stimulus score should not be greater than zero.
Delayed-type hypersensitivity: mask of delayed-type hypersensitivity level should be not greater than 1. For business owners unsure of how to effectively incorporate new technology into our antibacterial clothing, life may have just become a little easier. Harvest SPF Textile Co., Ltd. strives to be the acknowledged global leader and preferred partner in helping our clients succeed in the world’s rapidly evolving financial markets. In the boundless Chinese market, there are a number of enterprises that provides copper fabric clothing antibacterial clothing of their own brand over the years, but few have won more support from customers on the international stage than Copper Plus.