ZSY-A water resistance tester and water resistance tester

1、 Overview:

It is mainly used to measure the water resistance of contact wound dressings (the ability of 500mm hydrostatic pressure of 300s).

2、 Compliance with standards:

YY/T 0471.3-2004

3、 Technical 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、 Test steps:

1. The prepared sample shall be free of wrinkles;

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

3. Place the sample on the lower ring by sliding horizontally to avoid 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. Fill the tube with water to the required level above the sample surface;

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

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

4、 Evaluation of test results:

Inspect whether the filter paper passes the water seepage of the sample and record the results. If any of the three samples fails the water seepage test.