Differential Pressure Method Gas Transmission Tester N500L Introduction This product is based on the differential pressure method and is designed and manufactured in accordance with standards such as GB/T 1038 and ISO 2556. It employs a high-precision pressure sensor and automatic differential pressure maintenance technology, ensuring high testing accuracy. It is suitable for testing the gas permeability of films, sheets, paper, packaging materials, and related materials in the food, pharmaceutical, medical device, daily chemical, and photovoltaic electronics industries, providing a wide range of high-, medium-, and low-gas-barrier materials for efficient gas permeability testing. Test principle The N500L gas permeability meter uses the pressure difference method. The prepared sample is Add.: No. 3, Linjiang Road, Huangpu District, Guangzhou, Guangdong Province, China

placed between the upper and lower chambers. A vacuum pump is used to evacuate the entire gas path system. Then, one atmosphere of experimental gas is added to the upper chamber to create a constant pressure difference between the upper and lower chambers. Under the influence of the pressure gradient, the gas permeates through the membrane from the upper chamber to the lower chamber. The system can calculate the gas permeability and other barrier performance parameters of the sample by analyzing the pressure change in the lower chamber. Standard Chinese Pharmacopoeia 2025 Edition, "4007 Determination...

Packaging Testing Instruments • Patented core technology for precise pressure maintenance Patented automatic differential pressure maintenance technology automatically maintains the pressure difference across the sample (the differential pressure is adjustable). It features a built-in high-precision pressure sensor with a resolution of 0.01 Pa, offering excellent stability and a low failure rate. Add.: No. 3, Linjiang Road, Huangpu District, Guangzhou, Guangdong Province, China Tel: 020-8615 3789, 8615 3790 Web: www.gbpitester.com Accurate and reliable test data Automatic temperature adjustment...

A brand-name vacuum pump achieves an ultimate vacuum of 0.06 Pa, offering high vacuum efficiency and low noise. Automated testing mode monitors temperature, upper and lower chamber pressures, and differential pressure changes in real time during the testing process, ensuring high test repeatability. Wide testing range and high instrument applicability A wide measurement range with a resolution of up to 0.0001 cm³/(m²·24 h·0.1 MPa) meets the testing needs of various high, medium, and low barrier materials. With compatible accessories, it can measure the gas permeation of bottles, bags, bowls,...

Application Gas permeability test of film materials such as plastic films (PP/PET/PE/PVC/BOPP/CPP, etc.), plastic composite films, Film co-extruded films, aluminized films, and degradable packaging films etc. Gas permeability test of solid pharmaceutical hard sheet Sheet (PP/PVC/PTP, etc.), metal composite sheet, rubber sheet and other sheet materials Gas permeability test of paper and cardboard such as coated paper, carbon paper, silicone paper, aluminized paper, Medicinal stickers, warm paper-aluminum-plastic composite sheet, etc. Gas permeability test of medical plaster treatment patch, warm...

Factory configuration Standard 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...