This article gives a systematic introduction to proficiency test of barrier property testing for packaging material. Continue reading
As the cooperation institution, Labthink participated in the Plastic Packaging Material Permeability Proficiency Testing Project organized by Certification and Accreditation Administration of P.R.C, and accomplished the test specimen homogeneity and stability splendidly. Continue reading
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