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Leak Testing


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Leak Testing

Leak test aims to examine the sealing quality and integrity of a package, especially when the package is exposed to a pressure differential. The analysis for package leakage is meaningful for prolonging product shelf life.


Labthink Leak tester conforms to the multiple national and international standards:

  • ASTM D3078 - Standard Test Method for Determination of Leaks in Flexible Packaging by Bubble Emission
  • ASTM F1140 - Standard Test Methods for Internal Pressurization Failure Resistance of Unrestrained Packages (High Pressure Test, Creep Test & Creep to Failure Test)
  • ASTM F2054 - Standard Test Method for Burst Testing of Flexible Package Seals Using Internal Air Pressurization Within Restraining Plates
  • ISO 11607-1 - Packaging for terminally sterilized medical devices -- Part 1: Requirements for materials, sterile barrier systems and packaging systems
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MFY-01 is designed according to ASTM D3078 (bubble emission method) and applicable to the leakage determination of packages for food, medical instruments, daily chemical products, cars, electronic components, stationeries and other industrial products.


Firstly submerge the specimen in the water within the vacuum chamber, and then evacuate the vacuum chamber to form differential pressure between the inside and outside of specimen. The leakage property could be obtained by observing the steady progression of bubbles from the specimen and how the specimen expands and restores to its original shape after vacuum release.


This test instrument conforms to the standards: GB/T 15171, ASTM D3078


  • The instrument utilizes the digital preset design of vacuum degree and vacuum retention time to ensure the accuracy of test data

  • Top quality parts and components made by world famous brands are used to ensure reliable overall product performance

  • Specimens could be tested in the preset vacuum condition by automatic compensation of constant pressure

  • Professional software supports automatic back flushing and test termination to provide a safe test environment 

  • The instrument is controlled by micro-computer, with LCD and PVC operation panel, which is convenient for customers to test and view test data

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