*mydirectindustry

Catalogs
Labthink Instruments Co., Ltd.
Weighing Method Water Vapor Transmission Rate Tester

Weighing Method Water Vapor Transmission Rate Tester

Product catalog summary

Introduction
Labthink Instruments Co., Ltd. has introduced improvements to the weighing method for measuring water vapor transmission rate (WVTR), enhancing testing efficiency and capability for customization. This method, which includes the desiccant and water methods, is fundamental in WVTR testing.

Higher Testing Efficiency
The weighing method is often perceived as inefficient, but Labthink's innovations have addressed this by optimizing the testing interval and permeation equilibrium. The Labthink PERME W3/031 system allows for independent three-chamber testing, improving efficiency by enabling simultaneous testing of samples with similar materials.

Better Testing Accuracy
The Labthink PERME W3/031 system offers high testing accuracy due to its structural optimization and superior components. It exceeds standard requirements for humidity and temperature control, making it suitable for a wide range of materials, including packaging, textiles, and construction materials.

Supporting Inverted Cup Method
The inverted cup method, a subtype of the weighing method, is gaining attention due to international trade demands. Labthink's system accommodates this method with a customized cup design, allowing for expanded testing capabilities.

More Powerful Software
Labthink's software enhances data accuracy and provides comprehensive monitoring and process recording. It includes features for language selection and operational assistance, ensuring user-friendly operation.

Conclusions
The advancements in Labthink's weighing method instruments significantly impact the industry by improving testing efficiency, accuracy, and functionality. These innovations position Labthink's products as superior alternatives to sensor method instruments, aiding customers in making informed purchasing decisions.

Catalog excerpts

Weighing Method Water Vapor Transmission Rate Tester-1

LabthinkInstruments Co.,L TD 144 Wuyingshan Road, Jinan, China Tel: +86-531-85811021 85864214 Fax: +86-531-85812140 E-mail: [email protected] Further Improvements on Performance of Weighing Method Water Vapor Transmission Rate Tester Abstract: weighing method is the basic testing method for water vapor transmission rate measurement. After realizing automatic testing of water method, Labthink has made a series of innovative improvements on weighing method water vapor transmission rate tester with higher testing efficiency and better capability for extension. Thus, customized demands for desiccant method testing and inverted water method testing, as well as testing demands for special samples can be met. Key Words: water vapor transmission rate, WVTR, weighing method, testing efficiency, inverted water method Weighing method has long been the basic testing method for water vapor transmission rate testing with the widest applications, which can be subcategorized into desiccant method and water method, etc. The method needs manual operation in its early stage to accomplish the testing; yet, the relevant instruments are low in automation. Since high efficiency and multi-function are the trend for instrumental development, Labthink has, after introducing the first water method water vapor transmission rate tester of the world in 2003, made a series of innovative improvements on weighing method water vapor transmission rate instruments, and introduced Labthink PERME W3/031 Water Vapor Transmission Rate System with strengthened extension capability. Customized demands for desiccant method testing and inverted water method testing, as well as testing demands for special samples can be met. 1. Higher Testing Efficiency Commonly, it’ mistakenly held that weighing method is low in testing efficiency. No matter which method is s applied, there is not much difference in time to realize permeation equilibrium between the sides of the sample. This is because the permeation performance of the sample is definite, and the only influential factor would be the fluctuation of ambient environment. Therefore, what truly influence the testing duration is the testing interval selected by the operator and the permeation equilibrium determined by the operator; of which, the latter is more influential. Generally, instruments of weighing method are in strict accordance with the testing standards in determining permeation equilibrium. In other words, permeation equilibrium would be considered to have been realized when

Open the catalog to page 1

Weighing Method Water Vapor Transmission Rate Tester-2

LabthinkInstruments Co.,L TD 144 Wuyingshan Road, Jinan, China Tel: +86-531-85811021 85864214 Fax: +86-531-85812140 E-mail: [email protected] the changing rate is lower than a certain rate. It’ usually applied by the sensor method instruments with a fixed s testing duration, after which the instrument would be assumed to have achieved equilibrium. In practice, slight changes during permeation process would greatly influence the judgment on proportion mode, and no influence on fixed duration testing mode. However, it’ doubtful for the latter to achieve permeation equilibrium when the s test ends....

Open the catalog to page 2

Weighing Method Water Vapor Transmission Rate Tester-3

LabthinkInstruments Co.,L TD 144 Wuyingshan Road, Jinan, China Tel: +86-531-85811021 85864214 Fax: +86-531-85812140 E-mail: [email protected] Transmission Rate System; the testing of inverted cup method can be realized with customized cup. At the same time, this instrument can realize water method testing with certain functional expansions. 4. More Powerful Software Permeability test is more sensitive to data produced in process, which sets high requirements for software performance. Otherwise, data accuracy would be seriously affected. Labthink world leading software for permeability testing,...

Open the catalog to page 3

All Labthink Instruments Co., Ltd. catalogs and technical brochures

Archived catalogs

*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.

Brand list