How does the Mask Synthetic Blood Penetration Tester work?

The mask synthetic blood penetration tester is a device used to test the protective capabilities of medical masks. Its working principle is to spray a certain amount of synthetic blood on the mask, then observe whether penetration occurs, and determine the protection level of the mask through calculation or measurement.

The tester is tested by simulating human body liquid splashing to simulate the protective capabilities of the mask under actual conditions of use. Its specific working principle is as follows:

1. Sample preparation: Cut the mask material to be tested into appropriate size and ensure that its surface is smooth and defect-free. Typically, the test uses the filter material of the mask.

2. Simulated blood liquid: Use synthetic liquid to simulate blood, making the test safer and more controllable. Synthetic fluids typically consist of solutions of specific ingredients to simulate the viscosity, surface tension, chemical properties, etc. of real blood.

3. Device assembly: The sample is secured in a test device, usually a sealed test chamber. The chamber contains a blood-simulating fluid, as well as a pressure control and sensor device connected to it.

4. Testing process:

    a. Apply pressure: A certain pressure is provided by the pressure source and applied to the mask sample. Usually, the amount and time of the stress are set in advance to ensure consistency and comparability of the tests.

    b. Liquid Penetration: Upon application of pressure, the synthetic blood liquid will begin to pass through the filter layer of the mask sample in an attempt to penetrate into the interior of the chamber.

    c. Measurement and recording: Through the sensor device, monitor and record the penetration amount of the blood simulation liquid through the sample within a certain period of time (which can be a preset time period). This can be done using different methods such as weight measurement, flow rate measurement, resistance measurement, etc.

5. Result evaluation: The blood penetration performance of the mask sample was evaluated based on the recorded penetration amount. It is usually expressed using some indicators, such as the speed of liquid passing through the mask material, the amount of penetration, or the graded evaluation relative to some standards.

It should be noted that the mask synthetic blood penetration tester is a relatively professional device used for material evaluation in specific environments. It can provide information on the blood penetration performance of mask materials to evaluate their suitability in medical, protective and other fields.