Water Vapor Permeability Tester QT-WVP-500 series is used to test the water vapor transmission rate (WVTR) of a wide range of materials by Gravimetric Method. It is ideal for advanced water vapor permeability testing for research and development companies and has the reliability, speed, versatility and accuracy required for Quality Control testing.
Wide range of testing can be adopted by additional external fittings for packaging container, bags, pouch, bottle, can, bowl, aluminum coated containers, and many other packaging containers.
This instrument is widely used in food industry, pharmaceutical industry, cosmetics, flexible packaging materials industry and related industries in field of manufacturing of plastic film, barrier materials, sheets, metal aluminum, PVC sheets, etc for measurement of Water Vapor Transmission Rate (WVTR) of material and product quality control. It is also widely use in research and educational institutions to study application characteristics of materials.
User can performs testing on packaging materials, such as plastic film, composite film, co-extrusion film, geo-membrane, aluminum-plated films and foils, infusion bag, sheets, paper, paper board, solar battery panel, cellophane, and various packaging materials. It can also measure permeability through containers such as bag, pouch, bottle, can, bowl, box, pharmaceuticals, healthcare, electronics etc. with optional adopters for containers.
Gravimetric method. Fix the test sample in the middle of test chamber to separate the chamber into upper room and lower room; humid gas flows in upper room, and place desiccant device in lower room; as in lower room it remains dry (0-8%RH) by desiccant, water molecules penetrate through the sample from upper room into lower room, absorbed by desiccant; then the cup weight will increase; system weigh the increasing cup weight so as to calculate the water vapor transmission rate.
|Test range||0.01~10000 g/m2·24h|
|Test precision||0.001 g/m2·24h|
|Humidity range||30~90%RH, 100%RH|
|Gas source||nitrogen, purity 99.999%|
|Gas port||Φ6mm gas pipe|
|Test area||50.24 cm2|
|Sample size||Φ90 mm|
|Product size||680×500×420 mm|