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What devices are included in the LT-artificial blood vessel membrane water permeability tester? Instruments include: YY 0500-2004/ISO 7198:1998 a) Flow measurement device, such as a container that can be weighed, with an accuracy of not more than 2% of the full scale; Note: In the test, more than one is required to meet the flow requirements of the flow such a device
.
b) Pressure measuring device, the upper limit of pressure sensor range is 19 kPa (140 mmHg) and the accuracy is ± 0.
3 kPa (± 2 mmHg); c) Sample fixing device, which meets the following requirements: 1) The film that the fixing device can hold The sample area is 10-90MM (you can choose different areas according to the requirements, just change the fixture); 2) The structure of the sample is a round or square strip; Note: If the test sample is very narrow, the sample can be made into a rectangle
.
In this case, it should be noted on the test report, and the accuracy is ±1% of its size
.
The orientation of the sample should also be noted
.
3) A length of at least 6 times the bore diameter in the test line above the sample shall be straight and the diameter shall not change; 4) Leakage around the sample shall not be recorded
.
d) During the test, a pressure of 16.
0kPa (120mmHg), clean, filtered, room temperature water is required for the sample holder
.
.
b) Pressure measuring device, the upper limit of pressure sensor range is 19 kPa (140 mmHg) and the accuracy is ± 0.
3 kPa (± 2 mmHg); c) Sample fixing device, which meets the following requirements: 1) The film that the fixing device can hold The sample area is 10-90MM (you can choose different areas according to the requirements, just change the fixture); 2) The structure of the sample is a round or square strip; Note: If the test sample is very narrow, the sample can be made into a rectangle
.
In this case, it should be noted on the test report, and the accuracy is ±1% of its size
.
The orientation of the sample should also be noted
.
3) A length of at least 6 times the bore diameter in the test line above the sample shall be straight and the diameter shall not change; 4) Leakage around the sample shall not be recorded
.
d) During the test, a pressure of 16.
0kPa (120mmHg), clean, filtered, room temperature water is required for the sample holder
.
