This instrument is based on the cup method, which is professionally applicable to the water vapor transmission rate test of thin film specimens. Through the determination of water vapor transmittance to control and adjust the technical index of material, meet the different needs of application.
Gas cylinder lifting structure design and periodically weighing method to reduce system errors
Six distinct or equivalent specimens can be tested individually with independent test results at one operation.
Standard air velocity can effectively prevent the formation of moisture gradient.
Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditions
Convenient fast-access calibration ports for temperature and humidity.
The system is controlled by computer and test process is automatic.
The tast report could be saved and provided in multiple formats,including Excel, database,etc.
Reference film or standard weight for fast and accurate calibration
The instrument is equipped with USB port and Common data port for convenient input, output, and data transfer
This instrument conforms to various national and international standards:
ISO 2528, GB 1037, GB/T 16928, ASTM E96, ASTM D1653, TAPPI T464, DIN 53122-1, JIS Z0208, YBB 00092003
Including plastic films, plastic composite films, paper-plastic composite films, geomembranes coextruded films, aluminized films, aluminum foils, aluminum foil composite films and many others
Including engineering plastics, rubber and building materials, e.g. PP, PVC and PVDC
Paper and PaperBoard
Including paper and paper board, e.g. aluminum foil paper for cigarette packages and Tetra Pak materials
Textiles and Nonwovens
Including textiles and non-woven materials, e.g. waterproof breathable fabric, non-woven fabric for diapers and hygienic products
Inverted Cup Method
Mount film or sheeting in test dish, cover upper surface of specimen with distilled water, and make the lower side in certain humidity. Generate a constant humidity difference between two sides; water vapor permeates through specimen and measure weight changes in different time to obtain the water vapor transmission rate. NOTE: inverted cups are required
Artificial skin has to meet standard requirements for water vapor transmission rate to ensure better breath performance. This instrument can be used to test water vapor permeability of artificial skin
Medical Products and Accessories
Including plasters, aseptic wound protecting films, face masks and scar sticks
Including solar back-sheets
LCD Monitor Films
Including LCD monitor films
Test water vapor permeability of various sorts of paint films
Test water vapor permeability of cosmetics
Test water vapor permeability of various sorts of biodegradable films, e.g. starch-based packaging films
0.1 ~ 10,000 g/m2·24h (standard)
Number of Specimens
1~6 with independent test results
15 °C~ 55 °C (standard)
±0.1 °C (standard)
10%RH~ 98%RH Note (standard is 90%RH)
0.5~ 2.5 m/s (customization available )
≤ 3 mm (customization is available for other thickness)