The main purpose
It is used to determine the resistance of medical protective masks to penetration of synthetic blood under different test pressures, and can also be used to determine the blood penetration resistance of other coating materials.
Instrument characteristics
1. The protruding sample fixing device can simulate the actual use state of the mask, leaving the test target area without destroying the sample, and distributing the synthetic blood in the target area of the sample.
2. A special constant pressure spray device can spray a certain volume of synthetic blood within a controlled time.
3. It can fully simulate the injection speed corresponding to the average human blood pressure 10.6kPa, 16kPa, and 21.3kPa for testing.
4. It is equipped with a fixed target plate, which can block the high-pressure edge part of the sprayed liquid flow, and only the steady-state flow part is sprayed on the sample, which increases the accuracy and repeatability of the liquid velocity sprayed on the sample.
Technical index
1. Spraying distance: 300mm～305mm adjustable
2. The nozzle diameter: 0.84mm
3. Jet speed: 450cm/s, 550cm/s, 635cm/s
Applicable standards
GB 19803-2023 Protective face mask for medical use
YY/T 0691-2008 Protective equipment for infectious pathogens Test method for resistance to penetration of synthetic blood of medical masks (fixed volume, horizontal spray)
YY 0469-2011 Technical requirements for medical surgical masks Blood penetration test device
ISO 22609:2004 Protective equipment for infectious pathogens-Test method for resistance to penetration of synthetic blood by medical masks (fixed volume, horizontal jet)
ASTM F1862-07 Standard Test Method for Resistance of Medical Face Masks to Penetration by Synthetic Blood (Horizontal Projection of Fixed Volume at a Know Velocity)