Selecting a Right Gas Permeability Testing Instrument for Packaging Quality

Gas permeability testing is crucial for various industries, ensuring the shelf life and quality of packaged goods. However, with an increasing number of instruments and methods, obtaining consistent and accurate results can be challenging. This article explores two key factors to consider when choosing a gas permeability testing instrument: blank test data and test result repeatability.

The Challenge of Consistent Results

The accuracy of gas permeability testing is influenced by various factors, including the instrument's design, sensor precision, and even the test environment. These factors can lead to discrepancies between instruments from different manufacturers. To address this challenge, the article proposes two evaluation criteria:

Blank Test Data: This test reflects the instrument's inherent errors arising from system leakage and other uncontrollable factors. A reliable blank test involves sealing a gas-impermeable material in the instrument and measuring the pressure change over time. Lower pressure changes indicate a more accurate instrument.

Test Result Repeatability: Repeatability refers to the instrument's ability to produce consistent results for multiple tests on the same sample. Statistical measures like standard deviation and coefficient of variation help evaluate repeatability. A higher repeatability signifies a more reliable instrument.

Labthink C106H Gas Permeability Tester is an automatic test equipment. Take the blank test with a copper foil specimen as an example, this test demonstrates the instrument’s minimal influence from temperature and humidity fluctuations. Additionally, repeatability data from oxygen permeability tests on various specimens highlight the impact of material permeability on data variation.

In conclusion, by considering both blank test data and test result repeatability, researchers and quality control professionals can make informed decisions when selecting gas permeability testing instruments. These criteria provide a comprehensive evaluation of the instrument's inherent errors and its ability to deliver consistent results across different materials and permeability ranges.

Labthink encourages collaboration with packaging industry companies for quality control! Visit the website www.labthink.com to learn more!