ASTM F2622-08(2013)

Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using Various Sensors

SIGNIFICANCE AND USE
5.1 The O2GTR is an important determinant of the packaging protection afforded by barrier materials. It is not, however, the sole determinant, and additional tests, based on experience, must be used to correlate packaging performance with O2GTR. It is suitable as a referee method of testing, provided that the purchaser and the seller have agreed on sampling procedures, standardization procedures, test conditions, and acceptance criteria.  
5.2 Testing which has compared select instruments with other sensors to the instruments specifically described in Test Method D3985 is shown in Section 16, Precision and Bias, of this method.  
5.3 The Precision and Bias section of this method shows results using several instruments with non-coulometric and coulometric sensors.
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 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.  
1.3 This test method has intentionally been prepared to allow for the use of various sensors, devices, and procedures. The precision and bias of each design needs to be individually established to determine the applicability of that instrument or method to meet the needs of the user.  
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.

General Information

• Status: Historical
• Publication Date: 30-Sep-2013
• ICS: 83.140.10 - Films and sheets
• Technical Committee: F02 - Primary Barrier Packaging
• Drafting Committee: F02.10 - Permeation

Relations

• Replaces: ASTM F2622-08e1 - Standard Test Method for Oxygen Gas Transmission Rate Through Plastic Film and Sheeting Using Various Sensors
• Effective Date: 01-Oct-2013
• 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: 01-Oct-2013
• Referred By: ASTM F2097-20 - Standard Guide for Design and Evaluation of Primary Flexible Packaging for Medical Products
• Effective Date: 01-Oct-2013

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
Designation: F2622 − 08 (Reapproved 2013)
Standard Test Method for
Oxygen Gas Transmission Rate Through Plastic Film and
1
Sheeting Using Various Sensors
This standard is issued under the fixed designation F2622; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D3985Test Method for Oxygen Gas Transmission Rate
Through Plastic Film and Sheeting Using a Coulometric
1.1 This test method covers a procedure for determination
Sensor
of the steady-state rate of transmission of oxygen gas through
plastics in the form of film, sheeting, laminates, coextrusions,
3. Terminology
or plastic-coated papers or fabrics. It provides for the determi-
3.1 Definitions:
nation of (1) oxygen gas transmission rate (O GTR), (2) the
2
3.1.1 oxygen permeability coeffıcient (P'O )—theproductof
2
permeance of the film to oxygen gas (PO ), and (3) oxygen
2
the permeance and the thickness of film. The permeability is
permeability coefficient (P’O ) in the case of homogeneous
2
meaningfulonlyforhomogeneousmaterials,inwhichcaseitis
materials.
a property characteristic of the bulk material. The oxygen
1.2 Thistestmethoddoesnotpurporttobetheonlymethod
permeabilitycoefficientshouldnotbeused,unlesstherelation-
for measurement of O GTR. There may be other methods of
2
ship between thickness and permeance has been verified on
O GTR determination that use other oxygen sensors and
2
tests using several different thicknesses of the material. The SI
procedures.
unit of oxygen permeability is the mol/(m·s·Pa). The test
1.3 This test method has intentionally been prepared to conditions (see 3.1.3) must be stated.
allow for the use of various sensors, devices, and procedures.
3.1.2 oxygen permeance (PO )—the ratio of the O GTR to
2 2
The precision and bias of each design needs to be individually
the difference between the partial pressure of O on the two
2
2
established to determine the applicability of that instrument or
sidesofthefilm.TheSIunitofpermeanceisthemol/(m ·s·Pa).
method to meet the needs of the user.
The test conditions (see 15.1) must be stated.
1.4 The values stated in SI units are to be regarded as
3.1.3 oxygen transmission rate (O GTR)—the quantity of
2
standard. No other units of measurement are included in this
oxygen gas passing through a unit area of the parallel surfaces
standard.
of a plastic film per unit time under the conditions of test. The
2
SI unit of transmission rate is the mol/(m ·s). The test
1.5 This standard does not purport to address all of the
conditions, including temperature and oxygen partial pressure
safety concerns, if any, associated with its use. It is the
on both sides of the film must be stated.
responsibility of the user of this standard to establish appro-
3.1.3.1 Discussion—AcommonlyusedunitofO GTRisthe
priate safety and health practices and determine the applica-
2
3 2
cm (STP)⁄m ·d) at one atmosphere pressure difference where
bility of regulatory limitations prior to use.
3
1cm (STP) is 44.62 µmol, 1 atm is 0.1013 MPa, and one day
3
2. Referenced Documents
is 86.4 × 10 s. The O GTR in SI units is obtained by
2
-10
2
multiplying the value in inch-pound units by 5.160 × 10 .
2.1 ASTM Standards:
3
D1898Practice for Sampling of Plastics (Withdrawn 1998)
4. Summary of Test Method
4.1 Theoxygengastransmissionrateisdeterminedafterthe
1
ThistestmethodisunderthejurisdictionofASTMCommitteeF02onFlexible
sample has equilibrated in a controlled test environment.
Barrier Packaging and is the direct responsibility of Subcommittee F02.10 on
Control of carrier gas flow rate (for concentration detectors),
Permeation.
relative humidity, temperature, and oxygen concentration in
Current edition approved Oct. 1, 2013. Published November 2013. Originally
approved in 2008. Last previous edition approved in 2008 as F2622 – 08. DOI:
both the carrier gas and permeant (test) gas chambers is
10.1520/F2622-08R13.
critical.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
4.2 The specimen is mounted as a sealed semi-barrier
Standards volume information, refer to the standard’s Document Summary page on
between two chambers at ambient atmospheric pressure. A
the ASTM website.
3
stream of nitrogen slowly purges one chamber and the other
The last approved version of this historical standard is referenced on
www.astm.org. chamber contains oxygen. As oxygen gas permeates through
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