This article is provided by Jinan Saicheng Electronic Technology Co., Ltd

The thin film isobaric oxygen permeability meter is a professional testing equipment designed based on the principle of isobaric method (Coulomb coulometric method). It is mainly used to determine the oxygen barrier performance of plastic films, high barrier materials, packaging containers, etc., providing key data support for the selection of packaging materials and product shelf life evaluation in industries such as food, medicine, and medical devices.

1、 Core testing principles

The isobaric oxygen permeability meter accurately measures the oxygen permeation rate by simulating the oxygen permeation environment of materials in practical applications

Thin film testing: Clamp the sample between the testing chambers, with oxygen or air flowing on one side of the film and high-purity nitrogen flowing on the other side. Oxygen molecules diffuse through the thin film into nitrogen gas, which is carried by the flowing nitrogen gas to the Coulomb oxygen analysis sensor. The permeability is calculated by measuring the oxygen concentration.

Container testing: The outer side of the sample is filled with oxygen at a certain pressure, and high-pressure high-purity nitrogen gas is introduced inside. Oxygen permeates into the inner side of the sample under the effect of concentration difference, and is carried by nitrogen gas to the sensor for analysis, thereby obtaining the oxygen permeability.

2、 Application scenarios and industry value

food packaging

Evaluate the oxygen barrier performance of packaging materials to prevent food oxidation and spoilage, and extend shelf life.

Test materials: plastic film, aluminum plated film, co extruded film, aluminum foil composite film, etc.

drug packaging

Ensure that drugs are not affected by oxygen during storage and maintain drug stability.

Test materials: medicinal aluminum foil, PVC hard sheet, PVDC coating film, etc.

medical device

Evaluate the oxygen permeability of medical device packaging materials to ensure product sterility.

Test materials: medical dialysis paper, plastic composite film, coating materials, etc.

other fields

Solar backsheet: Test the oxygen permeability of the backsheet material, evaluate its weather resistance and service life.

Electronic packaging: Evaluate the oxygen barrier performance of electronic component packaging materials to prevent component oxidation and failure.

3、 Execution standards and testing specifications

Main standards

ISO 15105-2: Determination of gas transmission rate of plastic films and sheets by isobaric method.

GB/T 19789: Test method for oxygen permeability of packaging materials - Coulombometer detection method.

ASTM D3985: Standard Test Method for Measuring the Transmission Rate of Oxygen through Plastic Films and Sheets Using a Coulombic Detector.

Test Process

Sample preparation: Cut samples that meet the standard size to ensure a smooth and defect free surface.

Equipment calibration: Use standard samples or blank tests for calibration to ensure equipment accuracy.

Environmental control: The testing environment temperature is 23 ℃± 2 ℃, the relative humidity is 50% ± 5%, and the sample pretreatment time is ≥ 24 hours.

Data recording: Automatically record parameters such as oxygen permeability and generate test reports.