1、 Overview:

Mainly used for measuring the water resistance of contact wound dressings (with a static water pressure of 500mm and a capacity of 300S).

IICompliant with standards:

YY/T 0471.3-2004

IIITechnical parameters:

1. Liquid level scale: 500mm

2. Fixture inner diameter: 50mm

3. Fixture depth: 40mm

4. Fixture outer diameter: 80mm

5. Inner diameter of water pipe: 10mm

6. Water pipe height: 550mm

3、 Experimental steps:

1. The prepared sample should be wrinkle free;

2. Fill the tank with purified water at (21 ± 2) ℃;

3. Place the sample horizontally on the lower ring to avoid any air between the water surface and the lower surface of the sample;

4. Cover the upper surface of the sample with a dry filter paper larger than the test area, place the upper ring, and clamp it with a threaded device;

5. Inject water into the tube until it reaches the required water level above the surface of the sample;

6. Maintain the water pressure at (300 ± 10) seconds;

7. Check if there is water seepage through the sample on the filter paper and record the results;

4、 Evaluation of experimental results:

Check if there is water seepage through the sample on the filter paper and record the results. If any of the three samples fail the water seepage test.