Registration

How to Register

Download the documents on en.labthink.com. Fill out '2019 Spring Global Physical Properties Proficiency Service Registration Form', and email the form to lab@labthink.com.

Service Charge

The proficiency service is totally free of charge.

Procedures

1. Participating laboratories submit the registration forms before deadline.

2. Labthink Packaging Safety Testing Center (“Testing Center” hereinafter) assign unique lab No. to each laboratory. The lab No. will be used for all activities including the final report and it should be kept confidential by labs.

3. The Testing Center sends lab No. test samples and SOP for Proficiency Service to each lab.

4. Each laboratory should perform the tests according to the SOP for Proficiency Service. When the tests are completed, fill out the “Test Results Submission Form” and email the form to lab@labthink.com. The subject of the email should in form of “Lab No - test results".

5. Please submit the test results before 2019 June 30th, any submission later than the date will not be accepted.

6.The proficiency service report will be issued in the second half of July, and sent to all participating laboratories by the end of July.

7. Only one standard should be selected for each method and test item. Please refer to Appendix 1-3 for test items and test standards.

Test Specimens

All the test samples should pass inspection for homogeneity and stability with satisfactory results. For barrier properties test results, the statistical analysis and laboratory performance evaluation are in accordance with CNAS-GL02: Guidance on Statistic Treatment of Proficiency Testing Results and Performance Evaluation. For tensile properties test results, statistical analysis is performed with Cochran test and Grubbs test, the data processing and calculations are more scientific, direct and concise.

Test Items & Test Standards

Appendix 1: Test Items & Test Standards for Permeability Tests

Test Item Test Method Test standard
Water Vapor Transmission Gravimetric method ISO 2528 Sheet materials--Determination of water vapour transmission rate -- Gravimetric (dish) method
ASTM E96/E96M Standard Test Methods for Water Vapor Transmission of Materials
Electrolytic detection sensor method ISO 15106-3 Plastics -- Film and sheeting -- Determination of water vapour transmission rate --Part 3: Electrolytic detection sensor method
ASTM F3299 Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using an Electrolytic Detection Sensor (Coulometric P2O5 Sensor)
Infrared detection sensor method ISO 15106-2 Plastics -- Film and sheeting -- Determination of water vapour transmission rate -- Part 2: Infrared detection sensor method
ASTM F1249 Standard Test Method for Water Vapor Transmission Rate Through Plastic Film and Sheeting Using a Modulated Infrared Sensor
Humidity detection sensor method ASTM E398 Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement
ISO 15106-1 Plastics -- Film and sheeting -- Determination of water vapour transmission rate -- Part 1: Humidity detection sensor method
Oxygen Gas Transmission Differential- pressure method ASTM D1434 Standard Test Method for Determining Gas Permeability Characteristics of Plastic Film and Sheeting
ISO 15105-1 Plastics -- Film and sheeting -- Determination of gas-transmission rate --Part 1: Differential-pressure methods
Equal-pressure method ASTM D3985 Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor
ISO 15105-2 Plastics -- Film and sheeting -- Determination of gas-transmission rate -- Part 2: Equal-pressure method

Appendix 2: Test Standards for Tensile Property

Test Item Test standard
Tensile Property ASTM D882 Standard Test Method for Tensile Properties of Thin Plastic Sheeting
ISO 527-1 Plastics-Determination of tensile properties-Part 1: General Principles
ISO 527.3 Plastics -- Determination of tensile properties -- Part 3: Test conditions for films and sheets

Appendix 2: Test Standards for Thickness measurement

Test Item Test standard
Thickness ISO 4593 Plastics -- Film and sheeting -- Determination of thickness by mechanical scanning
ASTM D374/D374M Standard Test Methods for Thickness of Solid Electrical Insulation
ASTM D6988 Standard Guide for Determination of Thickness of Plastic Film Test Specimens
Value-added Service

We will provide consulting services regarding barrier testing data, to help participating laboratories to solve their problems encountered during tests.