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Disposable Medical Face Mask

Disposable Medical Face Mask

Disposable Medical Mask Material: NonWoven Fabric+Meltbl

Disposable KN95 Face Mask

Disposable KN95 Face Mask

Disposable N95 Mask Material: 5 ply Non-woven fabric Col

Disposable N95 Face Mask

Disposable N95 Face Mask

Disposable KN95 Face Mask Material: Needle punched cotto

Infrared Forehead Thermometer

Infrared Forehead Thermometer

Infrared Forehead Thermometer Sample: Free Brand: Orient

Disposable Isolation Coveralls

Disposable Isolation Coveralls

General purpose, Cleanroom, Construction/building, Clean

Disposable Medical Gloves

Disposable Medical Gloves

Disposable Medical Gloves Material: PVC Color: Transpare

Disposable Isolation Gowns

Disposable Isolation Gowns

PE Isolation Gown, Disposable PE Isolation Gown, Isolati

What Is A Level Isolation Gown?

AAMI standard introduced a classification system that guided manufacturers in the testing and labeling of the barrier performance of their products. In addition to strikethrough, the standard addresses parameters for flammability resistance and linting, which can serve as a carriage vehicle for microbial particles.
 

At the heart of this AAMI standard are the four levels of barrier protection, ranging from level one, which is the lowest level of protection, to level four, which is the highest level. Utilizing these classification levels, manufacturers are able to label their products according to the level of protection their product provides, and HCWs can more easily select the appropriate barrier they need. All surgical gowns are subject to this classification system.
 

The first classification level is determined by using a test called AATCC 42 – Water Impact Penetration, which measures the material’s resistance to water penetration under single-spray contact. The material is placed on top of a piece of pre-weighed blotter paper and positioned at a 45-degree angle; a 500 mL stream of water is then sprayed onto the material from a funnel located at a specific distance above the sample. The material is then removed and the blotter paper is weighed to ascertain how much water has been absorbed. For a level one classification, a material must pass water impact penetration with a result lower than 4.5 grams; material with a result higher than 4.5 grams is considered to be non-protective.
 

The second classification level is determined by using a test called AATCC 127 – Hydrostatic Head Test, which measures the material’s resistance to water penetration under increasing pressure. For a level two classification, the material must pass water impact penetration with a result less than 1.0 gram. The water or hydrostatic pressure is steadily increased until three water droplets form on the material sample. The hydrostatic pressure is then recorded; for a level two classification, the material must have a result higher than 20 cm on the hydrostatic head test. The higher the hydrostatic pressure, the more resistant the material is to penetration by water.
 

The third classification level is determined by testing material using the aforementioned water impact penetration and hydrostatic head tests. For a level three classification, the material must have a result of less than 1.0 gram on the water impact test and greater than 50 cm on the hydrostatic head test.
 

To attain level four classification, material must be considered to be impervious, and is subjected to the blood barrier test (ASTM F1670) and the viral barrier test (ASTM F1671). The blood barrier test measures a material’s resistance to synthetic blood under constant contact. The sample is mounted on a cell between the synthetic blood and a viewing port, then subjected to atmospheric pressure for 5 minutes, 2.0 psi for 1 minute and atmospheric pressure for 54 minutes. If there is any strikethrough on the sample during the 60-minute test, the sample fails the test. The viral barrier test measures the material’s resistance to penetration of a microorganism under constant contact. The sample is mounted similarly to the blood barrier test and is then subjected to the same time and pressure protocol. If any liquid penetration occurs, the sample fails. If there is no visible liquid penetration at the end of 60 minutes, a microbial assay is performed to determine if any non-visible penetration occurred. If any microbial penetration is found, the sample fails the test.
 

Isolation Gown Level

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