Labthink Permeability Proficiency Service
1. Background and Introduction
Scientific data is usually obtained through measurements. The competency of a laboratory is evaluated by the accuracy of its testing data. For the same test item, distinct test principles or test methods may be used by the test operators. However there is no one uniform standard by which the accuracy of the test results can be evaluated. Some laboratories which own the testing instruments to test OTR and WVTRof the films also face this problem. It has become an obstacle in R&D, quality control and standard drafting for the film manufacturers. By now, most of the laboratories evaluate their test results through inter-laboratory comparisons.
Today the testing technology and testing instruments for barrier properties are developing dramatically. In order to provide a valuable reference value for data accuracy, Labthink will launch its bi-annual permeability proficiency service since 2014. Some experts in packaging industry are invited as our consultants to guarantee the accuracy and fairness of this event..
Sincerely invite you to participate in Labthink Permeability Proficiency Service!
2. Registration Time
From March 1, 2014 to May 1, 2014
3. Test Items & Test Standards
| Test Item | Test Method | Test standard | |
|---|---|---|---|
| Water Vapor Transmission | Gravimetric method | ISO 2528:1995 | Sheet materials–Determination of water vapour transmission rate — Gravimetric (dish) method |
| ASTM E96/E96M-12 | Standard Test Methods for Water Vapor Transmission of Materials | ||
| Electrolytic detection sensor method | ISO 15106-3:2003 | Plastics — Film and sheeting — Determination of water vapour transmission rate –Part 3: Electrolytic detection sensor method | |
| Infrared detection sensor method | ISO 15106.2:2003 | Plastics — Film and sheeting — Determination of water vapour transmission rate — Part 2: Infrared detection sensor method | |
| ASTM F1249-13 | Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor | ||
| Humidity detection sensor method | ASTM E398-13 | Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement | |
| ISO 15106.1:2003 | Plastics — Film and sheeting — Determination of water vapour transmission rate — Part 1: Humidity detection sensor method | ||
| Oxygen Gas Transmission | Differential- pressure method | ASTM D1434-82(2009)e1 | Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting |
| ISO 15105.1-2007 | Plastics — Film and sheeting — Determination of gas-transmission rate –Part 1: Differential-pressure methods | ||
| Equal-pressure method | ASTM D3985-05(2010)e1 | Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor | |
| ISO 15105-2:2003 | Plastics — Film and sheeting — Determination of gas-transmission rate — Part 2: Equal-pressure method | ||
4. How to Register
Please download Permeability Proficiency Service Application Form Spring 2014 (Please find it in Document). Please complete the application form and send it to lab@labthink.cn before the deadline for registration, May 1, 2014.
5. Service Charge
In order to provide all the participated laboratories with better service and promote the uniformity of permeability test results of film, the permeability proficiency service in spring of 2014 is totally free of charge. All the cost of test samples, homogeneity and stability examinations and the freight charges will be afforded by Labthink Instruments Co., Ltd.
For more information about Labthink Permeability Proficiency Service, please visit http://www.labthinkinternational.com.cn/testing/permeability-proficiency-service.html