The 1st Corporate Partner of WPO (World Packaging Organization) Labthlnk* I Oxygen Transmission Rate Test System
Open the catalog to page 1Basic knowledge labthlnk* SThe 1st Corporate Partner of WPO (World Packaging Organization) “Barrier properties” refers to the property of material when specified permeable substance transmits from one side to the other (from high density side to low density side) such as gases and moisture, protect contents to prevent degradation in quality or function loss. In brief, barrier property refers to the barrier performance of material against permeation substance.
Open the catalog to page 3Basic knowledge labthlnk* SThe 1st Corporate Partner of WPO (World Packaging Organization) Oxygen, carbon dioxide, moisture, and other gases in the air have a major impact on the freshness and quality of foods, medicines, cosmetics and other products. Oxygen oxidizes many of the compounds in food, destroy nutrition, and cause food smelly and spoilage. Moisture influences the taste, texture, weight, also speeds up browning reaction and pigment oxidation. Oxidation and hydrolysis are the important reasons which cause invalid medicine and instability of medicine. Anti-oxidation and moistureproof...
Open the catalog to page 4Basic knowledge labthlnk* SThe 1st Corporate Partner of WPO (World Packaging Organization) Sorption Desorption From microscopic view, the permeation process includes the following steps as shown in the above figure: a. Gas molecules reach the film surface and accumulate; b. Absorption in the material takes place c. Gas molecules reach absorbing equilibrium on the high concentrated side of the film surface; d. Due to the concentration gradient, gas molecules diffuse toward the other side of the film. Diffusion equilibrium will be reached after a certain time;
Open the catalog to page 5Application www.labthink.com
Open the catalog to page 6labthlnk* I The 1st Corporate Partner of WPO (World Packaging Organization) Package The test principle is that pre-conditioned specimen is mounted as a sealed semi-barrier between two chambers. One chamber flows with test gas (usually is pure oxygen or air) and the other chamber is slowly purged by a stream of carrier gas (usually is N2). The pressures on both sides are equal, but the concentrations of oxygen are different. Due to concentration gradient difference between two chambers, oxygen molecules permeate through the specimen into the carrier gas side and are taken to the coulometric sensor...
Open the catalog to page 7Test principle labthlnk* SThe 1st Corporate Partner of WPO (World Packaging Organization) 1 Flow control valve 6 Overall temperature control 9 Labthink oxygen sensor
Open the catalog to page 8Test principle Labthink The 1st Corporate Partner of WPO (World Packaging Organization)
Open the catalog to page 9The 1st Corporate Partner of WPO (World Packaging Organization) Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor Plastics -- Film and sheeting -- Determination of gas-transmission rate -- Part 2: Equal-pressure method Standard Test Method for Oxygen Transmission Rate Through Dry Packages Using a Coulometric Sensor Note: Customization is necessary on Labthink OTR instruments if ASTM F1927 compliance is required
Open the catalog to page 10Standards labthlnk* SThe 1st Corporate Partner of WPO (World Packaging Organization) Based on standards, briefly, when designing a testing equipment, manufacturers must scientifically consider and deal with the following points: 1. Good structural design 2. Excellent system sealing effect 3. Accurate temperature and humidity control 4. Coulometric oxygen senor 6. High sensitivity and reliability of signal processing. Key words: coulometric sensor, excellent signal processing, accurate temperature and humidity control 7,1.5 Coulometric Sensor—An oxygen-sensitive eoulomel-ric sensor (see Note I)...
Open the catalog to page 11SThe 1st Corporate Partner of WPO (World Packaging Organization)
Open the catalog to page 12Parameters / models
Open the catalog to page 13labthlnk* SThe 1st Corporate Partner of WPO (World Packaging Organization) C203H is an accurate, efficient and easy-to-use testing instrument. Automatic test mode achieves “One-key start” after sample mounting. User doesn’t need to have professional materials knowledge, doesn’t need to have skilled instrument operation experience, doesn’t need to set many control parameters. The sophisticated testing instrument is no longer complicated to operate, which helps customers greatly save training cost of employees.
Open the catalog to page 14Labthink' The 1st Corporate Partner of WPO (World Packaging Organization) Four steps simple operation to finish a test 2. Sample mounting (3 minutes) 3. Set test condition on software (1 minute) 4. Click start button Wait until test result is given automatically
Open the catalog to page 15Labthink' The 1st Corporate Partner of WPO (World Packaging Organization) Four steps simple operation to finish a test 1. Sample cutting (2 minutes) 3. Set test condition on software (1 minute) 4. Click start button Wait until test result is given automatically
Open the catalog to page 16Labthink' The 1st Corporate Partner of WPO (World Packaging Organization) Four steps simple operation to finish a test 1. Sample cutting (2 minutes) 2. Sample mounting (3 minutes) Wait until test result is given automatically Test Type
Open the catalog to page 17labthlnk* I The 1st Corporate Partner of WPO (World Packaging Organization) Coulometric oxygen sensor www.labthink.com Labthink patented Coulometric oxygen sensor is developed by associated China and U.S. R&D team based on top class scientific and technical achievements in sensor technology field. The advanced sensor working with highly sensitive signal processing circuit provides excellent test accuracy, repeatability and ultra-long service life.
Open the catalog to page 18The 1st Corporate Partner of WPO (World Packaging Organization) Labthlnk* ICoulometric oxygen sensor The new generation fully absorbed Coulometric oxygen sensor, which meets ASTM D3985 completely. Oxygen sensor is the key component that determines the performance of C203H. According to ASTM 3985, the oxygen sensor used in this test method is a coulometric device that yields a linear output as predicted by Faraday’s Law. In principle, four electrons are produced by the sensor for each molecule of oxygen that passes into it.
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