China's standard for disposable surgical masks
- Aug 14, 2020-
Surgical Mask :YY 0469-2011
YY 0469-2011 This standard is applicable to disposable masks worn by clinical medical personnel during invasive procedures, etc.Surgery, dressings and so on.It is often the doctor who needs it.
YY 0469-2011 Medical Surgical Mask tests required that the mask should be clean and in good shape, with no damage or stains on the surface.The structure and size of the mask should cover the wearer's nose, mouth and lower forehead after wearing.Should conform to the design size and tolerance of the logo nose clip masks should be equipped with a nose clip made of plastic materials.The length of the nose clip should be no less than 8.0cm of the muzzle band. The breaking strength at the connection point between each mask band and the mask body should be no less than 10n. After the synthetic blood penetrates 2 mL of the synthetic blood and squirts into the outer side of the mask at a pressure of 16.0kPa (120 mmHg), the inner side of the mask should not be permeated.The bacterial filtration efficiency of the mask should not be less than 95%.The filtration efficiency of the particle filter mask for non-oily particles should not be less than 30%.Pressure difference
The pressure difference p for gas exchange between the two sides of the mask should not be greater than 49 Pa.Flame retardant masks shall be made of non-flammable materials, which shall burn no more than 5 s after leaving the flame.Microorganisms
Sterilization mask should be sterile.Residue of ethylene oxide should not exceed 10 g/ g for masks sterilized by ethylene oxide anthracite sterilization.The cytotoxicity of a cytotoxic mask should be no more than level 2.The score for the primary stimulus of the skin irritant mask should be no more than 0.40. The score for the delayed hypersensitivity of the mask should be no more than level 1.