This paper presents a summary of problems arising in proficiency testing project “Barrier Property Test of Plastic Packaging Material——Determination of Oxygen and Water Vapor Transmission Rate”; and then gives out solutions and suggestions for the development of instruments and practical experiences. Continue reading
This paper introduces the statistical procedures of proficiency testing, calculation methods and details in laboratory proficiency evaluation of plastic packaging material barrier property testing organized by Certification and Accreditation Administration of the People s Republic of China (CNCA). Continue reading
This paper analyzes the mistaken views which believe in the fact that the existence of pressure difference in differential-pressure method would affect the results of gas penetration property test. Continue reading
With regards to the industries of food, pharmaceutics, cosmetic, most of daily chemical and part of other industry productions, high barrier packaging materials are remarkably effective in prolonging the shelf life and improving the preservation quality of packaging contents. Continue reading
This paper introduces the necessity of barrier capability test for packaging material under unconventional temperature and testing method in details; and Labthink Ultra-High & Low Temperature Lab of and its services. Continue reading