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  • ASTM
    F2338-09(2013) Standard Test Method for Nondestructive Detection of Leaks in Packages by Vacuum Decay Method
    Edition: 2013
    $103.58
    Unlimited Users per year

Description of ASTM-F2338 2013

ASTM F2338-09-Reapproved2013

Historical Standard: Standard Test Method for Nondestructive Detection of Leaks in Packages by Vacuum Decay Method




ASTM F2338

Scope

1.1 Test Packages—Packages that can be nondestructively evaluated by this test method include:

1.1.1 Rigid and semi-rigid non-lidded trays.

1.1.2 Trays or cups sealed with porous barrier lidding material.

1.1.3 Rigid, nonporous packages.

1.1.4 Flexible, nonporous packages.

1.2 Leaks Detected—This test method detects package leaks by measuring the rise in pressure (vacuum loss) in an enclosed evacuated test chamber containing the test package. Vacuum loss results from leakage of test package headspace gases and/or volatilization of test package liquid contents located in or near the leak. When testing for leaks that may be partially or completely plugged with the package’s liquid contents, the test chamber is evacuated to a pressure below the liquid’s vaporization pressure. All methods require a test chamber to contain the test package and a leak detection system designed with one or more pressure transducers. Test method sensitivities cited below were determined using specific product-package systems selected for the precision and bias studies summarized in Table 1. Table 1 also lists other examples of relevant product-package systems that can be tested for leakage by vacuum decay.

TABLE 1 Summary of Vacuum Decay Leak Tests Applications for Various Product-Packages Systems

Package ExamplesA

Package Content Examples

ASTM P&B Data Tables

Target VacuumB

GAS LEAK TEST
PACKAGE APPLICATIONS AND PRECISION & BIAS STUDIES

Porous barrier lidded traysC

Empty
Solids (tablets, capsules, powders, devices)

3, 4, 5

–400 mbar

Nonlidded traysC or cups

Empty

2

–400 mbar

Plastic screw capped bottlesC

Solids (tablets, capsules, powders)
Liquids (with significant gas headspace volume)

6

–500 mbar

Glass syringesC

Solids (lyophilized powders)

7, 8

+250 mbar

 

 

 

 

ADDITIONAL GAS LEAK TEST PACKAGE APPLICATIONSA

Lidded (nonporous) trays or cups containing solid materials (for example, powders, tablets, capsules, devices)

Glass or plastic vials closed with elastomeric closures containing solid materials (for example, powders)

Glass or plastic vials closed with elastomeric closures, containing liquid materials, but with significant gas headspace volume

Flexible packages (for example pouches or bags) containing solid materials (for example, powders, devices)

LIQUID LEAK TEST (with or without gas headspace)
PACKAGE APPLICATIONS AND PRECISION & BIAS STUDIES

Glass syringesC

Liquids

9, 10

+1 mbar

 

 

 

 

ADDITIONAL LIQUID LEAK TEST PACKAGE APPLICATIONSA

Ophthalmic dropper tip bottles containing liquid materials

Glass or plastic ampoules containing liquid materials

Glass or plastic vials with elastomeric closures containing liquid materials

Lidded (nonporous trays or cups) containing liquid materials

Flexible packages such as pouches or bags containing liquid materials

A Examples of package types relevant to the specified leak test method are listed. The list is not intended to be all inclusive.
B Target vacuum expressed as a negative mbar reading (e.g., –400 mbar) refers to the measured test chamber pressure (vacuum) relative to atmospheric pressure. Target vacuum expressed as a positive mbar reading (e.g., +1 mbar) refers to the absolute pressure reading in the test chamber.
C  Packages used for the referenced ASTM Precision and Bias (P&B) studies.

1.2.1 Trays or Cups (Non-lidded) (Air Leakage)—Hole or crack defects in the wall of the tray/cup of at least 50 μm in diameter can be detected. Nonlidded trays were tested at a Target Vacuum of –4·E4 Pa (–400 mbar).

1.2.2 Trays Sealed with Porous Barrier Lidding Material (Headspace Gas Leakage)—Hole or crack defects in the wall of the tray/cup of at least 100 μm in diameter can be detected. Channel defects in the seal area (made using wires of 125 μm in diameter) can be detected. Severe seal bonding defects in both continuous adhesive and dot matrix adhesive package systems can be detected. Slightly incomplete dot matrix adhesive bonding defects can also be detected. All porous barrier lidding material packages were tested at a Target Vacuum of –4·E4 Pa (–400 mbar). The sensitivity of the test for porous lidded packages is approximately E-2 Pa·m3·s-1 using a calibrated volumetric airflow meter.

1.2.3 Rigid, Nonporous Packages (Headspace Gas Leakage)—Hole defects of at least 5 μm in diameter can be detected. Plastic bottles with screw caps were tested at a target vacuum of –5·E4 Pa (–500 mbar). Using a calibrated volumetric airflow meter, the sensitivity of the test is approximately E-3.4 Pa·m3·s-1 . Air-filled glass syringes were tested at a target vacuum of –7.5·E4 Pa (+250 mbar absolute) and again at a target vacuum of about +1 mbar absolute. The sensitivity of both tests is approximately E-4.1 Pa·m3·s -1 using a calibrated volumetric airflow meter.

1.2.4 Rigid, Nonporous Packages (Liquid Leakage)—Hole defects of at least 5 μm in diameter can be detected. This detection limit was verified using a population of water-filled glass syringes tested at a target vacuum of about +1 mbar absolute.

1.2.5 Flexible, Nonporous Packages (Gas or Liquid Leakage)—Such packages may also be tested by the vacuum decay method. Sensitivity data for flexible packages were not included in the precision and bias studies, although the use of vacuum decay for testing such packages is well known.

1.3 Test Results—Test results are qualitative (Accept/Reject). Acceptance criteria are established by comparing quantitative baseline vacuum decay measurements obtained from control, non-leaking packages to measurements obtained using leaking packages, and to measurements obtained with the introduction of simulated leaks using a calibrated gas flow meter.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


Keywords

absolute pressure transducer; barrier performance; block; criteria parameters; differential pressure transducer; flexible packaging; food packages; gauge pressure transducer; hole leaks; holes; leaks; liquid leaks; mask; medical packages; non-destructive testing; package integrity monitoring; package integrity test; permeable packaging; pharmaceutical packages; porous barrier; porous barrier material; porous packaging; pressure change leak testing; pressure transducer; seal integrity monitoring; seal integrity test; seal leaks; semi-rigid thermoformed trays; sterile integrity test; vacuum decay leak testing; vacuum leak testing; volumetric airflow meter


ICS Code

ICS Number Code 55.180.40 (Complete, filled transport packages)


DOI: 10.1520/F2338-09R13

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