-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
-
Cosmetic Ingredient
- Water Treatment Chemical
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
The hydrostatic pressure tester adopts dynamic test, static test and self-defined procedure test to test the water repellency of textiles under certain pressure.
It is suitable for outdoor sports clothing waterproof test, umbrella test, waterproof fabric test; jackets, medical protection Material liquid permeability, blood permeability test
.
It is a test equipment independently developed and produced by our Standard Group (Hong Kong) Co.
, Ltd.
, with high cost performance and complete after-sales service
.
Operation process: 1.
Slowly adjust the water inlet valve to increase the water pressure in the sample holder to 0.
1MPa.
If the approximate range of the hydrostatic pressure resistance of the sample can be estimated, the water pressure can also be directly added to the lower limit of the range.
test
.
Maintain the above pressure for at least 1 hour, and observe whether there is water seepage in the holes of the multi-well plate
.
If there is no water seepage in the sample, pressurize step by step with every 0.
1MPa difference, and keep each step for at least 1 hour until water seeps out, indicating that the sample has seepage holes or ruptures, and the pressure of the previous step is recorded as the The hydrostatic pressure resistance value of the sample
.
2.
If the device specified in GB/T19979.
2 is used, the seepage flow should be used to judge whether there is water seepage
.
When the seepage flow is extremely small under a certain hydraulic pressure difference, it can be considered that there is no water seepage.
When the seepage flow increases rapidly, it indicates that the sample has seepage holes or has been damaged, and the test can be terminated
.
3.
When there are water droplets in the holes of the perforated plate, if there is no water seepage after wiping it off, it can be judged that it is caused by the overflow of the edge of the sample, and the test can be continued; if there is still water after wiping it off If water seeps out, it can be judged that it is caused by water seepage of the sample, and the test can be terminated
.
If it is only necessary to judge whether the sample reaches a certain hydrostatic pressure resistance value, it can be directly pressurized to this pressure value and kept for at least 1 hour.
If there is no water seepage, it is judged that it meets the requirements
.
Determine the hydrostatic pressure resistance value of the remaining samples according to the procedure
.
If the 3 values differ greatly (the lower 2 values differ by more than 50%), the test sample should be increased
.
4.
The lowest value among the measured hydrostatic pressure resistance values of the above 3 samples is taken as the hydrostatic pressure resistance value of the sample; if the measured value exceeds 3, the average value of the lowest 2 values shall be calculated, if only 1 If the value is lower and more than 50% lower than the next lowest value, the value should be discarded
.
It is suitable for outdoor sports clothing waterproof test, umbrella test, waterproof fabric test; jackets, medical protection Material liquid permeability, blood permeability test
.
It is a test equipment independently developed and produced by our Standard Group (Hong Kong) Co.
, Ltd.
, with high cost performance and complete after-sales service
.
Operation process: 1.
Slowly adjust the water inlet valve to increase the water pressure in the sample holder to 0.
1MPa.
If the approximate range of the hydrostatic pressure resistance of the sample can be estimated, the water pressure can also be directly added to the lower limit of the range.
test
.
Maintain the above pressure for at least 1 hour, and observe whether there is water seepage in the holes of the multi-well plate
.
If there is no water seepage in the sample, pressurize step by step with every 0.
1MPa difference, and keep each step for at least 1 hour until water seeps out, indicating that the sample has seepage holes or ruptures, and the pressure of the previous step is recorded as the The hydrostatic pressure resistance value of the sample
.
2.
If the device specified in GB/T19979.
2 is used, the seepage flow should be used to judge whether there is water seepage
.
When the seepage flow is extremely small under a certain hydraulic pressure difference, it can be considered that there is no water seepage.
When the seepage flow increases rapidly, it indicates that the sample has seepage holes or has been damaged, and the test can be terminated
.
3.
When there are water droplets in the holes of the perforated plate, if there is no water seepage after wiping it off, it can be judged that it is caused by the overflow of the edge of the sample, and the test can be continued; if there is still water after wiping it off If water seeps out, it can be judged that it is caused by water seepage of the sample, and the test can be terminated
.
If it is only necessary to judge whether the sample reaches a certain hydrostatic pressure resistance value, it can be directly pressurized to this pressure value and kept for at least 1 hour.
If there is no water seepage, it is judged that it meets the requirements
.
Determine the hydrostatic pressure resistance value of the remaining samples according to the procedure
.
If the 3 values differ greatly (the lower 2 values differ by more than 50%), the test sample should be increased
.
4.
The lowest value among the measured hydrostatic pressure resistance values of the above 3 samples is taken as the hydrostatic pressure resistance value of the sample; if the measured value exceeds 3, the average value of the lowest 2 values shall be calculated, if only 1 If the value is lower and more than 50% lower than the next lowest value, the value should be discarded
.
