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Your location: Home > Related Articles > Function test of synthetic blood penetration tester for medical masks

Function test of synthetic blood penetration tester for medical masks

Author:QINSUN Released in:2023-08 Click:19

The medical mask synthetic blood penetration tester is used to measure the penetration performance of daily protective masks such as surgical medical masks, disposable medical masks, civilian masks, etc., and to evaluate the resistance synthetic blood penetration masks. The test equipment independently developed and produced by our company Qisnun Precision Electromechanical Technology Co., Ltd.

Applicable standards:

GB/T 19083-2010 Technical requirements for medical protective masks 5.6 Blood Penetration barrier performance

YY/T 0469 -2011 Medical surgical masks 5.5 Synthetic blood penetration test

YY/T 0691-2008 \"Protective equipment against infectious pathogens medical mask anti-synthetic blood penetration test method\"

Main Parameters:

1. Spray distance: adjustable from 300mm to 305mm;

2. Nozzle diameter: 0.84mm;

3. Jet speed: 450cm/s, 550cm/s, 635cm/s;

4. Pressure injection rate: 10.6kPa (80mmHg), 16kPa (120mmHg), 21.3kPa (160mmHg).

Test operation:

1. Pull the sample holder handle at the top left of the instrument and pull it to the left Lower the sample holder;

2. Secure the sample (the standard requires the sample to be tested within 60 seconds from the pretreatment chamber) onto the holder -sample.

3. Close the sample holder and press the \"Start\" button. At this time, a certain amount of synthetic blood ﹙Surface tension﹙0.042±0.002﹚N/m﹚Spray on the mask measured behind the positioning target in the horizontal direction, and the stopwatch starts counting at the same time. After the set spraying time, the instrument automatically stops spraying;

After 4.10s, the buzzer sounds, aPress the \"Stop\" button, pay attention to check whether there is synthetic blood flowing from the sample observation surface, and a test is completed;

5. If you need to continue the test, repeat the above steps until the first part of the test is done.

Positioning target operation:

First, close the outlet valve of the air compressor, connect the air compressor to the power supply, and wait for the air compressor reaches the predetermined pressure. Turn off the power to the air compressor, turn off the air source switch, open the outlet valve, and pull up the valve head of the filter pressure reducing valve on the left side of the tool. According to the valve head instructions, the \"+\" direction is for boost and the \"-\" direction is for pressure reduction setting. , so that the pressure reduction valve pressure gaugefilter pressure indicates 0.2 MPa. Install the positioning target so that the distance between the back of the positioning target and the mask sample is 10mm, and tighten the positioning with the positioning screw on the guide plate at the bottom of the target of positioning.