ASTM C1304-23

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Designation: C1304 − 18 C1304 − 23
Standard Test Method for
Assessing the Odor Emission of Thermal Insulation
Materials
This standard is issued under the fixed designation C1304; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method covers a laboratory procedure for subjective determination of the existence, nature, and degree of odors
present in all types of thermal insulation materials. This test method is not intended to evaluate the air quality aspects that any such
odors may present.
1.2 The standard test condition for material evaluated under this test method is 149 6 1.8°F (65 6 1°C). Standard specifications
referencing this test method may require other test conditions.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
C168 Terminology Relating to Thermal Insulation
3. Terminology
3.1 For definitions of terms related to this standard, see Terminology C168.
4. Significance and Use
4.1 Thermal insulating materials that produce objectionable odors could cause discomfort to persons occupying a structure
insulated with such materials. Therefore, an examination to determine the odor potential of a particular insulation is desirable.
This test method is under the jurisdiction of ASTM Committee C16 on Thermal Insulation and is the direct responsibility of Subcommittee C16.31 on Chemical and
Physical Properties.
Current edition approved Sept. 1, 2018June 1, 2023. Published September 2018June 2023. Originally approved in 1995. Last previous edition approved in 20132018 as
C1304 – 08 (2013).C1304 – 18. DOI: 10.1520/C1304-18.10.1520/C1304-23.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
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C1304 − 23
5. Apparatus
5.1 Stainless Steel Containers or Glass Jars, with all-metallic lids with air-tight seals are required. Containers shall not produce
discernible odors of their own. The volume of the container shall be 2.5 to 3 times the volume of the test specimen. Transparent
containers will be wrapped with aluminum foil to eliminate visual bias.
NOTE 1—See 5.26.2 for the minimum mass requirement for the test specimen, which influences test container volume.
5.2 Oven, capable of maintaining a temperature of 149 6 1.8°F (65 6 1°C).
5.3 Odor Assessment Panel, consisting of five persons who have demonstrated the ability to detect odors both accurately and
consistently. A guideline for selection of panelists is given in ASTM STP 758.
5.4 Odor- and Draft-Free Area, where the required oven is immediately accessible.
6. Sample Preparation
6.1 Number of Tests—Unless otherwise dictated by a specification standard, one specimen of the material is selected at random
for testing. The sample shall be protected from contamination prior to testing. One empty container shall be used as a control for
each sample tested.
6.2 Specimen Size—Test specimens shall have a minimum mass of 2 oz (57 g). Where applicable, the specimens shall
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