Moisture permeability test

Which company is the best for moisture permeability testing? Where can I get moisture permeability test reports that are highly recognized? BAIJIAN material testing agency can provide moisture permeability testing services. BAIJIAN is a collectively owned testing agency with complete qualifications, complete laboratory equipment, and a strong scientific research team , the test reports issued are more scientific, fair and accurate.

Detection cycle: 7-15 working days

Testing fee: Initial inspection of samples. After the initial inspection, a quotation will be made based on the customer's testing needs and the complexity of the experiment.

Test items: Moisture permeability test

Introduction to moisture permeability test methods

There are several common methods for testing moisture permeability:

Radiation method: also called humidity difference method, the sample is covered on a radiating surface. This surface has a higher temperature than the surface of the sample and is maintained at a constant temperature. under the humidity. The platform's conveyor can move in two opposite directions. The humidity sensor records the difference in humidity and calculates the moisture vapor permeability.

Gradient method: two different humidity levels are passed through a section of material to determine uniformity. The relative humidity gradient formed will tend to an equilibrium state, and the speed of humidity conduction through the material is relatively high, making a single test take 1-3 hours.

Gravimetric method: The sample is placed on a well plate. At one end, a water mirror is equipped with a tiny fan that pushes water vapor onto the sample. The other end of the orifice plate is weighed to record the time and humidity difference to calculate the moisture permeability.

One-way port coefficient method: A method used in standard electronic manufacturing equipment that uses an elastic membrane as one side of the sample and an environment called an ultra-high vacuum (UHV) chamber on the other side. There is a vacuum environment in the UHV chamber that is several orders of magnitude lower than the atmospheric pressure. The sample is affected by the vacuum. The water vapor molecules introduced from one side are separated while passing through the sample. This will cause one side of the sample to be separated from the other side. The pressure is different, and the moisture permeability of the sample is determined by measuring the difference between the two pressures.

Moisture permeability test range

Plastic film, fabric, non-woven fabric, diaper, paper, plastic wrap, fabric, plastic, zeolite, nylon, polyester, non-woven fabric, pet, Fabric, epoxy, acrylic, aluminum foil, polyurethane, tpu, hydrogel, polyester, etc.

What are the functions of BAIJIAN test reports?

1. Quality and safety: Determine the quality and safety of product raw materials, semi-finished products and finished products.

2. Internal quality control: Provide product quality data to check whether product performance meets standards.

3. Bidding test report: Carry out relevant tests according to the test requirements and provide test reports.

4. Product import and export: BAIJIAN test report supports authenticity query by scanning QR code!

Transparent Moisture test standard

BS EN 1279-2-2002 Architectural glass insulating glass components Part 2: Long-term test method and moisture permeability requirements

GB/T 12704.1-2009 Textile fabric permeability Moisture test

GB/T 30397-2013 Hygroscopicity and moisture permeability test of entire leather shoes

GB/T 30801-2014 Determination of hygrothermal and moisture permeability properties of building materials and products< /p>

GOST 22406-1977 Wooden parts and products for construction projects. Determination of moisture permeability of moisture-proof coatings and impregnations

JIS Z0222-1959 Moisture-proof packaging containers moisture permeability test

SS 323 PART E1-1987(1996) Test of flexible plastic packaging materials. Determination of barrier properties of Group E and moisture permeability

JIS Z0208-1976 Moisture permeability test of moisture-proof packaging materials

JIS L1099-2012 Test on moisture permeability of fiber products

JIS L1099-2012 Test on moisture permeability of fiber products

JIS K6404-15-1999 Test on rubber or plastic coated fabrics - No. 15 Part: Moisture permeability test

What are the advantages of BAIJIAN testing

1. BAIJIAN is a collectively owned testing institution, and the test reports issued by the laboratory are scientific, fair and accurate.

2. BAIJIAN has multiple laboratory branches across the country, supporting door-to-door sampling/sampling testing nationwide.

3. Initial inspection of samples, no testing fees will be charged during the initial inspection, and a detailed experimental plan will be developed.

4. The testing cycle is short, the testing cost is low, and the experimental plan is complete.

5. The test report supports the QR code system to check the authenticity.

6. Complete qualifications, complete laboratory equipment, and a strong scientific research team.

7. Support writing MSDS services in 36 languages.

Testing process

1. Send samples

2. Initial inspection samples

3. Quotation

4 , both parties confirm, sign a confidentiality agreement, and start the experiment

5. End the experiment in 7-15 working days

6. Mail the test report for later service.

The above is the relevant introduction to moisture permeability testing. If you have other testing needs, you can consult the laboratory engineer.