Introduction
A water vapour permeability tester is an instrument used to measure the water vapour transmission rate (WVTR) of materials, such as films, packaging, textiles, and building materials, which is the rate at which water vapour passes through the material, and it is used in the packaging, textile, construction, and many other industries for quality control and product development. The water vapour permeability is measured by various methods, including the gravimetric method, in which the test specimen is sealed over a cup containing a desiccant or water, and the weight change of the cup over time is measured, and the water vapour transmission rate is calculated; the infrared sensor method and the electrolytic sensor method, in which the water vapour passing through the specimen is detected by a sensor; and the calcium chloride method, and the tests follow standardized methods, such as ASTM E96, ISO 2528, and other standards, and the tester consists of a test chamber with a controlled temperature and humidity, a specimen holder, and a detection system, and it provides the water vapour transmission rate, expressed in grams per square meter per day; the tester is used for evaluating the barrier properties of packaging films, for testing the breathability of textiles and fabrics, for testing the water vapour resistance of building materials, and for many other applications. Water vapour permeability testers are used in the packaging industry for testing food and pharmaceutical packaging, in the textile industry for testing breathable fabrics, in the construction industry, in the electronics industry, and in many other applications. With their measurement of water vapour transmission, water vapour permeability testers are essential for evaluating barrier materials.
Water Vapour Permeability Tester LWPT-T2010
Water Vapour Permeability Tester uses the wet cup method and operates at a steady speed of 2 rpm. It uses a precision drive system to rotate eight containers, each containing water reser...
Water Vapour Permeability Tester LWPT-T2010
Water Vapour Permeability Tester uses an infrared method for testing and has a measuring range of 0.005 to 40 g/(m²·24h), with an optional extension up to 100 g/(m²·24h). It features...
Water Vapour Permeability Tester LWPT-T2013
Water Vapour Permeability Tester uses cup method and offers a measurement range of 0.02 to 10,000 g/(m²·24h). It features a three-chamber design, enabling simultaneous or independent t...
Water Vapour Permeability Tester LWPT-T2012
Water Vapour Permeability Tester measurement range of 0.02 to 10,000 g/(m²·24h), and uses cup method for testing. It employs highly accurate weight, temperature, and humidity sensors, ...
Water Vapour Permeability Tester LWPT-T2011
Water Vapour Permeability Tester uses an infrared method of testing and offers a measuring range of 0.005 to 40 g/(m²·24h), with an optional extension up to 100 g/(m²·24h). It is des...
Water Vapour Permeability Tester LWPT-T2010
Water Vapour Permeability Tester can accommodate 8 pieces of measuring glass. It utilizes a single layer for moisture permeation. Fitted with a high-precision temperature and humidity se...
Standards
Complies with the above standards, but is not limited to them.
Features
1. Water vapor permeability tester for WVTR measurement.
2. Tester measuring water vapor transmission through films.
3. For packaging, films and barrier materials.
4. Includes tester, cells, controls and manual.
5. Measures WVTR by gravimetric or sensor methods.
FAQ
Q1: What scenarios is this tester used for?
A: It measures water vapor transmission rate through films, packaging and barrier materials to assess moisture protection for products.
Q2: What standards does it comply with?
A: It follows ASTM E96, F1249, ISO 2528 and related GB/T standards, with conditions and sensors verified. We confirm the stated performance during final inspection and can supply a certificate of conformity together with supporting documents for audit purposes.
Q3: What is the warranty?
A: The tester carries a 12 to 24 month warranty covering the instrument. Cells and seals are wear parts. Damage from misuse is excluded.
Q4: Is it hard to operate?
A: Operation requires trained staff for specimen sealing and weighing or sensor readings. We provide a manual and training.
Q5: What is the lead time?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is calibration required?
A: Performance should be verified periodically using calibrated reference standards, with results logged in the equipment record. Most users perform this check every 6 to 12 months or according to their internal quality schedule. We provide the procedure, reference materials and formal calibration service if required.
Q7: Are consumables universal?
A: Seals and films are standard, while cells are model-specific. Ongoing cost is minimal.
Q8: Can it be customized?
A: Yes, several configurations are available. Options include gravimetric or sensor methods, number of cells and conditions. We can discuss further custom requirements, confirm feasibility and advise any effect on the schedule before the order is confirmed.
Q9: Is installation included?
A: No installation is required for this unit. It is ready to run after a simple power connection and the leveling steps shown in the manual. We supply a detailed operation guide and online setup videos, and on-site commissioning can be arranged separately if your facility requires it.
Q10: What materials are compatible?
A: It handles flat films and packaging within the cell. It is not for non-flat products without suitable holders, non-barrier rigid items, or materials beyond the test conditions.
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