Gravimetric Method Water Vapor Permeability Analyzer AUTO W812 Introduction This product is based on the cup-type water vapor transmission test principle and is designed and manufactured in accordance with ASTM E96 and GB/T 1037 standards. It provides a wide range of high-efficiency water vapor transmission rate testing for materials with low, medium, and high water vapor barrier properties. It is suitable for testing the water vapor transmission performance of films, sheets, paper, fabrics, non-woven fabrics, and related materials in the food, pharmaceutical, medical device, and daily chemical industries. Test principle A desiccant (weight gain method) or water (weight loss method) is placed inside the sample cup; the sample cup is sealed with the sample and placed in the test chamber; the temperature, humidity, and wind speed of the test chamber are controlled; the humidity difference inside and outside the sample Add.: No. 3, Linjiang Road, Huangpu District, Guangzhou, Guangdong Province, China

cup drives water vapor to permeate the sample, increasing or decreasing the mass of the sample cup; the mass of the sample cup is weighed periodically, and performance parameters such as the water vapor permeation rate of the sample are calculated. 2025 version of Chinese Pharmacopoeia "4010 Determination of Water Vapor Transmission of Pharmaceutical Packaging Materials", ASTM E96, GB/T 1037, GB/T 16928, GB/T 17146, GB/T Add.: No. 3, Linjiang Road, Huangpu District, Guangzhou, Guangdong Province, China Tel: 020-8615 3789, 8615 3790 Web: www.gbpitester.com

Packaging Testing Instruments The newly designed test chamber and circular moisture permeation cup, with a fully automatic rotating tray, ensure high weighing efficiency. The test chamber provides 360° three-dimensional constant temperature and humidity, achieving a test resolution of up to 0.0001 g/(m2-24h). 12 test stations; supports both weight-addition and weight-reduction testing modes. Bidirectional automatic temperature control via semiconductor cooling chip, achieving a temperature control accuracy of 0.1°C. Dual airflow (dry and humid) humidity control with automatic wind speed adjustment...

Personalized test reports can be set as needed, supporting multiple data output formats, electronic signatures, and online submission of audit reports. Our company possesses a National Reference Material Grading Certificate for Water Vapor Transmission Rate, approved and issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, standard number (GBW(E)130543 / GBW(E)130544). We use independently developed national reference materials to calibrate and verify our instruments, ensuring the accuracy, universality, and authority of our...

Packaging Testing Instruments Note: GBPI has always been committed to the innovation and improvement of product performance and function. For this reason, product technical specifications and appearance will also be changed accordingly. The above situation will not be notified. GBPI reserves the right of modification and final interpretation. Add.: No. 3, Linjiang Road, Huangpu District, Guangzhou, Guangdong Province, China Tel: 020-8615 3789, 8615 3790 Web: www.gbpitester.com

GBPI (Guangzhou Biaoji Packaging Equipment Co., Ltd.) was established in 2002 and is located in Guangzhou Economic Development Zone. It is an enterprise integrating R&D, production, sales of packaging testing instruments, packaging equipment, modified atmosphere refrigerator and other products, and providing third-party testing and reference material calibration services. It is committed to providing comprehensive, professional, high-quality products and technical services for the packaging, food, medicine, testing and other industries. Write industry standards with quality and become a leader...