The ASTM F1862 standard published by the American Testing and Materials Organization (ASTM) describes the blood penetration properties and test methods of face masks for medical use. The full name of this standard is as follows: ASTM F1862 / F1862M-17 Standard test method for the resistance of medical face masks to synthetic blood penetration (horizontal projection of constant volume at known rate).
The standard in question provides a test method to evaluate the resistance of medical face masks against synthetic blood penetration. However, this standard does not define acceptable penetration resistance levels. Because the responsible institution determines these levels according to their specific applications and conditions. Therefore, when describing the performance of medical face masks, it is necessary to state the specific conditions under which the test was performed.
In general, medical face masks should be resistant to the splashes of blood, body fluids and other potentially infectious substances. There are many factors that affect the design of the mask, such as wetting and penetration properties of body fluids, such as surface tension, viscosity and fluid polarity, as well as the structure of materials and hydrophilicity or hydrophobicity properties.
During a medical procedure, a blood vessel can be punctured from time to time, causing high-speed blood flow that affects the protective face mask. The rate of effect depends on various factors, such as the patient's blood pressure, the size and depth of the puncture. This test method is based on the assumption that the medical face mask will be close to the puncture site. Therefore, an appropriate blood pressure should be selected when performing this test.
Briefly, this test method is used to evaluate the resistance of medical face masks to penetration with the effect of a small volume of high-speed synthetic blood flow. Medical face mask successful or unsuccessful determinations are based on the visual detection of synthetic blood penetration.
Within the framework of laboratory testing services, our organization also provides standard test services for ASTM F1862 Medical face masks for resistance to penetration with synthetic blood.
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