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Labthink Instruments Co., Ltd.
Cup Method Leather Water Vapor Permeability Testing

Cup Method Leather Water Vapor Permeability Testing

Product catalog summary

Overview
This document describes a professional, high-efficiency, and intelligent Water Vapor Transmission Rate (WVTR) Test System, specifically designed for testing film specimens using the cup method. It features a high-resolution sensor with a test resolution of 0.1g/m2·24h, offering excellent sensitivity.

Specifications
The system supports both water and desiccant methods, with automatic temperature and humidity control for various non-standard test conditions. It includes a standard air velocity to maintain a constant humidity difference, automatic reset for accurate weighing, and a gas cylinder lifting structure to minimize errors. Calibration ports for temperature and humidity are easily accessible.

High Efficiency
The W3/062 system features a precision design with a round dish rack that accommodates 6 test dishes, allowing for individual testing of 6 different specimens simultaneously. It can connect with up to 9 satellite bases to perform up to 60 tests concurrently.

Intelligent Features
The system is equipped with advanced software for user-friendly operation and intelligent data management. It supports the LystemTM Lab Data Sharing System for systematic management of test results and reports.

Test Principle
The test involves creating a constant humidity difference across the specimen, allowing water vapor to permeate through it. By measuring weight changes over time, the water vapor transmission rate is determined.

Standards Compliance
The instrument complies with standards such as ISO 2528, GB 1037, ASTM E96, and others.

Applications
The system is applicable for testing water vapor transmission rates in films, sheeting, paper, textiles, artificial skin, medical products, solar back-sheets, LCD monitor films, paint films, cosmetics, and biodegradable films.

Technical Specifications
- Test Range: 0.1 ~ 10,000 g/m2·24h (Water Method), 0.1 ~ 2,500 g/m2·24h (Desiccant Method)
- Number of Specimens: 1~6
- Accuracy: 0.01 g/m2·24h
- Resolution: 0.001 g
- Temperature Range: 15 °C~ 55 °C
- Humidity Range: Water Method: 90%RH~ 70%RH, Desiccant Method: 10%RH~98%RH
- Air Velocity: 0.5~ 2.5 m/s
- Specimen Thickness: ≤ 3 mm
- Test Area: 33 cm2
- Specimen Size: Φ74 mm
- Test Chamber Size: 45 L
- Power Supply: 220VAC 50Hz / 120VAC 60Hz

Configurations
Standard configurations include the instrument, computer, software, test dishes, desiccant tube, humidity generator, calibration weight, communication cable, sample cutter, and valve set. Optional parts include a satellite base, reference film, air compressor, and desiccant.

Note
Technical specifications are subject to change. Visit the Labthink website for updates. Labthink reserves the rights of final interpretation and revision.

Catalog excerpts

Cup Method Leather Water Vapor Permeability Testing-1

PERME® W3/062 Water Vapor Transmission Rate Test System Professional, High Efficiency and Intelligent WVTR Test System Professional This instrument is based on the cup method, and is professionally applicable to the water vapor transmission rate test of film specimens. It is equipped with high resolution sensor, whose test resolution is 0.1g/m2·24h. The sensor also provides excellent test sensitivity.  Both water method and desiccant method can be used  Wide range and high-precision of automatic temperature and humidity control to support various combinations of non-standard test conditions  Standard air velocity enables constant humidity difference between two sides of test dishes  Automatic reset before weighing ensures accurate weighing data  Gas cylinder lifting structure design and periodically weighing method to reduce system errors  Convenient fast-access calibration ports for temperature and humidity  Reference film or standard weight for fast and accurate calibration High Efficiency W3/062 system adopts the precision design of round dish rack which is equipped with 6 test dishes and supports 6 different specimens to test individually at one operation. It can be also connected with 9 satellite bases together to accomplish up to 60 tests at the same time.  Precision design with high test efficiency and ultra-high system accuracy  6 distinct or equivalent specimens can be tested individually with independent test results at one operation  The system can be easily connected to a maximum of 10 instruments to accomplish up to 60 tests at the same time Intelligent The instrument is equipped with the latest operating software, with user-friendly operating interface and intelligent data management functions. It also supports LystemTM Lab Data Sharing System, which ensures uniform management of test results and test reports.  Based on the user-friendly Windows operating interface for easy operation  Saves test data in different formats for convenient data transfer  Intelligent historical data searching, comparing, analyzing and printing functions  Supports LystemTM Lab Data Sharing System for uniform and systematic management of test results and test reports Test Principle Under a certain test temperature, a constant humidity difference is generated between two sides of the test specimen. The water vapor permeates through the specimen and into the dry si

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Cup Method Leather Water Vapor Permeability Testing-2

changes of the test dish in different time, water vapor transmission rate and other parameters can be obtained. The humidity of the test chamber for water method is lower, while the humidity of the test chamber for desiccant method is higher. This test instrument conforms to the following standards: ISO 2528, GB 1037, GB/T 16928, ASTM E96, ASTM D1653, TAPPI T464, DIN 53122-1, JIS Z0208, YBB 00092003 Applications This instrument is applicable to the determination of water vapor transmission rate of: Including plastic films, plastic composite films, paper-plastic composite Films films, geomembranes,...

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Cup Method Leather Water Vapor Permeability Testing-3

Humidity Accuracy Specimen Thickness Test Area Specimen Size Test Chamber Size Port Size Instrument Dimension Power Supply Note1: Herein the “Humidity” means the humidity difference between the two sides of the film specimen. The humidity in the test chamber is 10%~30%RH accordingly. Note2: Herein the “Humidity” means the humidity difference between the two sides of the film specimen. The humidity in the test chamber is 10%RH-98%RH when the temperature is 15 to 40 °C, 10%RH-90%RH when the temperature is 45 °C, 10%RH-80%RH when the temperature is 50 °C, 10%RH-70%RH when the temperature is 55 °C....

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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