Common test methods for fabric moisture permeability tester

Fabric moisture permeability tester is used to test the moisture permeability of medical clothing, light industrial materials, textiles, sportswear and other materials to evaluate their moisture permeability, which is the key product
independently developed and produced by our standard group (Hong Kong) Co.
, Ltd.
Test method: 1.
Hygroscopic (desiccant) method: put the hygroscopic desiccant (anhydrous calcium chloride) particles (0.
63~2.
5mm) in a 160 °C oven for 3h to keep the desiccant dry
.
Put the desiccant in the test cup, make it about 4mm lower than the sample, place the sample cup in the test instrument, after about 1 hour of test humidity control time, weigh, test for a period of time, weigh
again.
The weight difference of the secondary weighing is applied to the formula to obtain the moisture permeability
of the sample.
Applicable standards: GB/T 12704.
1, ASTM E96 methods A, C, E, JIS L 1099 A-1 2.
Evaporation (positive cup water method) method: The measuring cylinder is used to inject water at the same temperature as the test conditions, and the amount of water is required
according to each standard.
The test sample is loaded on the test cup, and the cup is placed in the test instrument, balanced for a period of time, weighed, the initial weight is obtained, and after a period of testing, it is weighed
again.
The mass difference in the second is applied to the formula to obtain the moisture permeability
of the sample.
Applicable standards: GB/T 1204.
2 Method A, ASTM E96 Method B, E, JIS L1099 A-2, BS 7209 3.
Evaporation (pouring cup of water method) method: The measuring cylinder is used to inject water at the same temperature as the test conditions, the amount of water is according to the requirements of each standard, the test sample is loaded on the test cup, and the cup is placed in the test instrument, balanced for a period of time and weighed, the initial weight is obtained, and after testing for a period of time, it is weighed
again.
The mass difference in the second is applied to the formula to obtain the moisture permeability
of the sample.
Applicable standards: GB/T 12704.
2 Method B, ASTM E96 Method BW 4.
Potassium acetate method: Inject saturated potassium acetate solution into the test cup, about 2/3 of the height of the cup; then seal the sample at the test cup and place it in the
test sink.
Weigh the overall mass of the pre-test cup with the overall quality of
the test cup after 15 minutes.
Applicable standards: JIS L1099 method B-1, JIS L1099 method B-2, ISO 14956 Advantages: 1.
The company has been engaged in testing instruments for more than ten years and has a strong after-sales service team; 2.
Be able to deal with various problems in a timely and rapid manner, and relieve customers' worries; 3.
Complete spare parts to solve the trouble of long delivery time of ordered spare parts; 4.
Provide outsourcing maintenance services; 5.
Long-term supply of various commonly used testing instruments; 6.
Keep up with the update of industry standards and provide test instruments
that meet new standards in a timely manner.