ASTM D3985-02e1

Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor

SCOPE
1.1 This test method covers a procedure for determination of the steady-state rate of transmission of oxygen gas through plastics in the form of film, sheeting, laminates, coextrusions, or plastic-coated papers or fabrics. It provides for the determination of (1) oxygen gas transmission rate (O2GTR), (2) the permeance of the film to oxygen gas (PO2), and ( 3) oxygen permeability coefficient (P'O2) in the case of homogeneous materials.
1.2 This standard does not purport to address all of the safety problems, 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.
1.3 This test method does not purport to be the only method for measurement of O2GTR. There may be other methods of O2GTR determination that use other oxygen sensors and procedures.

General Information

• Status: Historical
• Publication Date: 09-May-2002
• ICS: 55.040 - Packaging materials and accessories
• Technical Committee: F02 - Primary Barrier Packaging
• Drafting Committee: F02.30 - Mechanical Dispensers

Relations

• Replaces: ASTM D3985-02 - Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor
• Effective Date: 10-May-2002
• Replaced By: ASTM D3985-05 - Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using a Coulometric Sensor
• Effective Date: 01-Jun-2005
• Referred By: ASTM F3136-22 - Standard Test Method for Oxygen Gas Transmission Rate through Plastic Film and Sheeting using a Dynamic Accumulation Method
• Effective Date: 10-May-2002
• Referred By: ASTM F2622-20 - Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using Various Sensors
• Effective Date: 10-May-2002
• Referred By: ASTM F1927-20 - Standard Test Method for Determination of Oxygen Gas Transmission Rate, Permeability and Permeance at Controlled Relative Humidity Through Barrier Materials Using a Coulometric Detector
• Effective Date: 10-May-2002
• Referred By: ASTM D2673-14(2022) - Standard Specification for Oriented Polypropylene Film
• Effective Date: 10-May-2002
• Referred By: ASTM D7407-07(2020) - Standard Guide for Determining the Transmission of Gases Through Geomembranes
• Effective Date: 10-May-2002
• Referred By: ASTM F2097-20 - Standard Guide for Design and Evaluation of Primary Flexible Packaging for Medical Products
• Effective Date: 10-May-2002
• Referred By: ASTM D4000-23 - Standard Classification System for Specifying Plastic Materials
• Effective Date: 10-May-2002
• Referred By: ASTM F1307-20 - Standard Test Method for Oxygen Transmission Rate Through Dry Packages Using a Coulometric Sensor
• Effective Date: 10-May-2002
• Referred By: ASTM D8065/D8065M-16 - Standard Classification System and Basis for Specification for Specifying Plastic Films
• Effective Date: 10-May-2002
• Referred By: ASTM D5047-17 - Standard Specification for Polyethylene Terephthalate Film and Sheeting
• Effective Date: 10-May-2002

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
e1
Designation:D3985–02
Standard Test Method for
Oxygen Gas Transmission Rate Through Plastic Film and
1
Sheeting Using a Coulometric Sensor
This standard is issued under the fixed designation D3985; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1
e NOTE—A footnote reference was deleted in March 2004.
1. Scope 3.1.1 oxygen permeability coeffıcient (P’O )—the product
2
ofthepermeanceandthethicknessoffilm.Thepermeabilityis
1.1 This test method covers a procedure for determination
meaningfulonlyforhomogeneousmaterials,inwhichcaseitis
of the steady-state rate of transmission of oxygen gas through
a property characteristic of the bulk material. This quantity
plastics in the form of film, sheeting, laminates, coextrusions,
should not be used, unless the relationship between thickness
or plastic-coated papers or fabrics. It provides for the determi-
andpermeancehasbeenverifiedontestsusingseveraldifferent
nation of (1) oxygen gas transmission rate (O GTR), (2) the
2
thicknessesofthematerial.TheSIunitofoxygenpermeability
permeance of the film to oxygen gas (PO ), and (3) oxygen
2
is the mol/m·s·Pa. The test conditions (see 3.1.3) must be
permeability coefficient (P’O ) in the case of homogeneous
2
stated.
materials.
3.1.2 oxygen permeance (PO )—the ratio of the O GTR to
2 2
1.2 This standard does not purport to address all of the
the difference between the partial pressure of O on the two
2
safety problems, if any, associated with its use. It is the
2
sidesofthefilm.TheSIunitofpermeanceisthemol/(m ·s·Pa).
responsibility of the user of this standard to establish appro-
The test conditions (see 5.1) must be stated.
priate safety and health practices and determine the applica-
3.1.3 oxygen transmission rate (O GTR)—the quantity of
2
bility of regulatory limitations prior to use.
oxygen gas passing through a unit area of the parallel surfaces
1.3 Thistestmethoddoesnotpurporttobetheonlymethod
of a plastic film per unit time under the conditions of test. The
for measurement of O GTR. There may be other methods of
2
2
SI unit of transmission rate is the mol/(m ·s). The test condi-
O GTR determination that use other oxygen sensors and
2
tions, including temperature and oxygen partial pressure on
procedures.
both sides of the film must be stated.
3
2. Referenced Documents
3.1.3.1 Acommonly used unit of O GTR is the cm (STP)/
2
2 3
2
m ·d)atoneatmospherepressuredifferencewhere1cm (STP)
2.1 ASTM Standards:
is 44.62 µmol, 1 atm is 0.1013 MPa, and one day is
D1434 Test Method for Determining Gas Permeability
3
86.4 310 s.TheO GTRinSIunitsisobtainedbymultiplying
Characteristics of Plastic Film and Sheeting 2
−10
the value in inch-pound units by 5.160 310 .
D1898 Practice for Sampling of Plastics
F1927 Test Method for Determination of Oxygen Gas
4. Summary of Test Method
Transmission Rate, Permeability and Permeance at Con-
4.1 Theoxygengastransmissionrateisdeterminedafterthe
trolledRelativeHumidityThroughBarrierMaterialsUsing
sample has equilibrated in a dry test environment. In this
a Coulometric Detector
context, a “dry” environment is considered to be one in which
3. Terminology the relative humidity is less than 1%.
4.2 The specimen is mounted as a sealed semi-barrier
3.1 Definitions: :
between two chambers at ambient atmospheric pressure. One
chamberisslowlypurgedbyastreamofnitrogenandtheother
1
ThistestmethodisunderthejurisdictionofASTMCommitteeF02onFlexible
chamber contains oxygen. As oxygen gas permeates through
Barrier Materials and is the direct responsibility of Subcommittee F02.30 on Test
the film into the nitrogen carrier gas, it is transported to the
Methods.
coulometric detector where it produces an electrical current,
Current edition approved May 10, 2002. Published July 2002. Originally
published as D3985–81. Last previous edition D3985–95. the magnitude of which is proportional to the amount of
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
oxygen flowing into the detector per unit time.
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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e1
D3985–02
FIG. 1 A Practical Arrangement of Components for the Measurement of Oxygen Transmission Rate Using the Coulometric Method
5. Significance and Use 7.1.1 Diffusion Cell shall consist of two metal halves,
which, when closed upon the test specimen, will a
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