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ASTM D6670-18

(Practice)

Standard Practice for Full-Scale Chamber Determination of Volatile Organic Emissions from Indoor Materials/Products

Standard Practice for Full-Scale Chamber Determination of Volatile Organic Emissions from Indoor Materials/Products

SIGNIFICANCE AND USE
5.1 VOCs emitted from materials/products affect indoor air quality (IAQ) in buildings. To determine the impact of these emissions on IAQ, it is necessary to know their emission rates over time. This practice provides guidelines for using a full-scale environmental chamber for testing large materials and full-scale material systems/assemblies.  
5.2 While this practice is developed for measuring VOC emissions, the chamber facilities and methods of evaluation presented in this practice are also useful for a variety of purposes including: (1) testing the emissions during the application process (for example, painting), or other related sources; (2) developing scaleup methods (for example, from small chamber results to a full-scale scenario); (3) studying the interaction between sources and sinks, and validating source/sink models which are the basis for IAQ prediction; (4) testing interactions between source emissions and other compounds in the air (for example, NOx, ozone, SOx); and (5) evaluating the performance of air cleaning devices intended to remove contaminants from indoor air.
SCOPE
1.1 This practice is intended for determining volatile organic compound (VOC) emissions from materials and products (building materials, material systems, furniture, consumer products, etc.) and equipment (printers, photocopiers, air cleaners, etc.) under environmental and product usage conditions that are typical of those found in office and residential buildings.  
1.2 This practice is for identifying VOCs emitted and determining their emission rates over a period of time.  
1.3 This practice describes the design, construction, performance evaluation, and use of full-scale chambers for VOC emission testing.  
1.4 While this practice is limited to the measurement of VOC emissions, many of the general principles and procedures (such as methods for evaluating the general performance of the chamber system) may also be useful for the determination of other chemical emissions (for example, ozone, nitrogen dioxide). Determination of aerosol and particle emissions is beyond the scope of this document.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 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.  
1.7 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.

General Information

Status
Published
Publication Date
31-Aug-2018
ICS
13.040.20 - Ambient atmospheres
Technical Committee
D22 - Air Quality
Drafting Committee
D22.05 - Indoor Air
Current Stage
Ref Project

Relations

Refers
ASTM D1356-20 - Standard Terminology Relating to Sampling and Analysis of Atmospheres
Effective Date
15-Mar-2020
Refers
ASTM D1356-15 - Standard Terminology Relating to Sampling and Analysis of Atmospheres
Effective Date
01-Jul-2015
Refers
ASTM D1356-15a - Standard Terminology Relating to Sampling and Analysis of Atmospheres
Effective Date
15-Oct-2015
Refers
ASTM D6196-15 - Standard Practice for Choosing Sorbents, Sampling Parameters and Thermal Desorption Analytical Conditions for Monitoring Volatile Organic Chemicals in Air
Effective Date
01-Nov-2015
Refers
ASTM D7706-17 - Standard Practice for Rapid Screening of VOC Emissions from Products Using Micro-Scale Chambers
Effective Date
01-May-2017
Refers
ASTM D5116-17 - Standard Guide for Small-Scale Environmental Chamber Determinations of Organic Emissions from Indoor Materials/Products
Effective Date
01-Nov-2017
Refers
ASTM E779-10(2018) - Standard Test Method for Determining Air Leakage Rate by Fan Pressurization
Effective Date
15-Jul-2018
Refers
ASTM E779-19 - Standard Test Method for Determining Air Leakage Rate by Fan Pressurization
Effective Date
01-Jan-2019
Refers
ASTM D1356-20a - Standard Terminology Relating to Sampling and Analysis of Atmospheres
Effective Date
01-Sep-2020
Refers
ASTM D1356-14b - Standard Terminology Relating to Sampling and Analysis of Atmospheres
Effective Date
01-Dec-2014
Referred By
ASTM D6178-19 - Standard Practice for Estimation of Short-Term Inhalation Exposure to Volatile Organic Chemicals Emitted from Bedding Sets
Effective Date
01-Sep-2018
Referred By
ASTM D6177-19 - Standard Practice for Determining Emission Profiles of Volatile Organic Chemicals Emitted from Bedding Sets
Effective Date
01-Sep-2018
Referred By
ASTM D7911-19 - Standard Guide for Using Reference Material to Characterize Measurement Bias Associated with Volatile Organic Compound Emission Chamber Test
Effective Date
01-Sep-2018
Referred By
ASTM D8141-22 - Standard Guide for Selecting Volatile Organic Compounds (VOCs) and Semi-Volatile Organic Compounds (SVOCs) Emission Testing Methods to Determine Emission Parameters for Modeling of Indoor Environments
Effective Date
01-Sep-2018
Referred By
ASTM D7339-18 - Standard Test Method for Determination of Volatile Organic Compounds Emitted from Carpet using a Specific Sorbent Tube and Thermal Desorption / Gas Chromatography
Effective Date
01-Sep-2018
Referred By
ASTM D8445-22a - Standard Practice for Measuring Chemical Emissions from Spray Polyurethane Foam (SPF) Insulation Samples in a Large-scale Ventilated Enclosure
Effective Date
01-Sep-2018
Referred By
ASTM D8345-21 - Standard Test Method for Determination of an Emission Parameter for Phthalate Esters and Other Non-Phthalate Plasticizers from Planar Polyvinyl Chloride Indoor Materials for Use in Mass Transfer Modeling Calculations
Effective Date
01-Sep-2018
Referred By
ASTM D7143-17 - Standard Practice for Emission Cells for the Determination of Volatile Organic Emissions from Indoor Materials/Products
Effective Date
01-Sep-2018

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Standards Content (Sample)

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.
Designation: D6670 − 18
Standard Practice for
Full-Scale Chamber Determination of Volatile Organic
1
Emissions from Indoor Materials/Products
This standard is issued under the fixed designation D6670; 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 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 This practice is intended for determining volatile or-
D1356 Terminology Relating to Sampling and Analysis of
ganiccompound(VOC)emissionsfrommaterialsandproducts
Atmospheres
(building materials, material systems, furniture, consumer
D1914 PracticeforConversionUnitsandFactorsRelatingto
products, etc.) and equipment (printers, photocopiers, air
Sampling and Analysis of Atmospheres
cleaners, etc.) under environmental and product usage condi-
tions that are typical of those found in office and residential D5116 Guide for Small-Scale Environmental Chamber De-
terminations of Organic Emissions from Indoor Materials/
buildings.
Products
1.2 This practice is for identifying VOCs emitted and
D5197 Test Method for Determination of Formaldehyde and
determining their emission rates over a period of time.
OtherCarbonylCompoundsinAir(ActiveSamplerMeth-
1.3 This practice describes the design, construction, perfor-
odology)
mance evaluation, and use of full-scale chambers for VOC
D5466 Test Method for Determination of Volatile Organic
emission testing.
Compounds in Atmospheres (Canister Sampling Method-
ology)
1.4 While this practice is limited to the measurement of
D6196 Practice for Choosing Sorbents, Sampling Param-
VOCemissions,manyofthegeneralprinciplesandprocedures
eters and Thermal Desorption Analytical Conditions for
(such as methods for evaluating the general performance of the
Monitoring Volatile Organic Chemicals in Air
chamber system) may also be useful for the determination of
D6345 Guide for Selection of Methods for Active, Integra-
other chemical emissions (for example, ozone, nitrogen diox-
tive Sampling of Volatile Organic Compounds in Air
ide).Determinationofaerosolandparticleemissionsisbeyond
D7706 Practice for Rapid Screening of VOC Emissions
the scope of this document.
from Products Using Micro-Scale Chambers
1.5 The values stated in SI units are to be regarded as
E741 Test Method for Determining Air Change in a Single
standard. No other units of measurement are included in this
Zone by Means of a Tracer Gas Dilution
standard.
E779 Test Method for DeterminingAir Leakage Rate by Fan
1.6 This standard does not purport to address all of the Pressurization
safety concerns, if any, associated with its use. It is the E1333 Test Method for Determining Formaldehyde Concen-
responsibility of the user of this standard to establish appro- trations in Air and Emission Rates from Wood Products
priate safety, health, and environmental practices and deter- Using a Large Chamber
mine the applicability of regulatory limitations prior to use.
2.2 Other Documents:
1.7 This international standard was developed in accor-
ASHRAE 62.1–2010 Ventilation for Acceptable Indoor Air
3
dance with internationally recognized principles on standard-
Quality
ization established in the Decision on Principles for the
ASHRAE 62.2–2010 Ventilation and Acceptable Indoor Air
3
Development of International Standards, Guides and Recom-
Quality in Low-Rise Residential Buildings
mendations issued by the World Trade Organization Technical
CMEIAQ 1999a A Method for Sampling and Analysis of
Barriers to Trade (TBT) Committee.
2
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
1
This practice is under the jurisdiction ofASTM Committee D22 on Air Quality Standards volume information, refer to the standard’s Document Summary page on
and is the direct responsibility of Subcommittee D22.05 on Indoor Air. the ASTM website.
3
Current edition approved Sept. 1, 2018. Published September 2018. Originally Available from American Society of Heating, Refrigerating, and Air-
approved in 2001. Last previous edition approved in 2013 as D6670 – 13. DOI: Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA
10.1520/D6670-18. 30329, http://www.ashrae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6670 − 18
Volatile Organic Compounds in Emission Testing o
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6670 − 13 D6670 − 18
Standard Practice for
Full-Scale Chamber Determination of Volatile Organic
1
Emissions from Indoor Materials/Products
This standard is issued under the fixed designation D6670; 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 practice is intended for determining volatile organic compound (VOC) emissions from materials and products (building
materials, material systems, furniture, consumer products, etc.) and equipment (printers, photocopiers, air cleaners, etc.) under
environmental and product usage conditions that are typical of those found in office and residential buildings.
1.2 This practice is for identifying VOCs emitted and determining their emission rates over a period of time.
1.3 This practice describes the design, construction, performance evaluation, and use of full-scale chambers for VOC emission
testing.
1.4 While this practice is limited to the measurement of VOC emissions, many of the general principles and procedures (such
as methods for evaluating the general performance of the chamber system) may also be useful for the determination of other
chemical emissions (for example, ozone, nitrogen dioxide). Determination of aerosol and particle emissions is beyond the scope
of this document.
1.5 Values stated in the International System of Units (SI) The values stated in SI units are to be regarded as the standard. No
other units of measurement are included in this standard.
1.6 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.
1.7 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
2.1 ASTM Standards:
D1356 Terminology Relating to Sampling and Analysis of Atmospheres
D1914 Practice for Conversion Units and Factors Relating to Sampling and Analysis of Atmospheres
D3686 Practice for Sampling Atmospheres to Collect Organic Compound Vapors (Activated Charcoal Tube Adsorption Method)
D5116 Guide for Small-Scale Environmental Chamber Determinations of Organic Emissions from Indoor Materials/Products
D5197 Test Method for Determination of Formaldehyde and Other Carbonyl Compounds in Air (Active Sampler Methodology)
D5466 Test Method for Determination of Volatile Organic Compounds in Atmospheres (Canister Sampling Methodology)
D6196 Practice for Choosing Sorbents, Sampling Parameters and Thermal Desorption Analytical Conditions for Monitoring
Volatile Organic Chemicals in Air
D6345 Guide for Selection of Methods for Active, Integrative Sampling of Volatile Organic Compounds in Air
D7706 Practice for Rapid Screening of VOC Emissions from Products Using Micro-Scale Chambers
E741 Test Method for Determining Air Change in a Single Zone by Means of a Tracer Gas Dilution
E779 Test Method for Determining Air Leakage Rate by Fan Pressurization
E1333 Test Method for Determining Formaldehyde Concentrations in Air and Emission Rates from Wood Products Using a
Large Chamber
1
This practice is under the jurisdiction of ASTM Committee D22 on Air Quality and is the direct responsibility of Subcommittee D22.05 on Indoor Air.
Current edition approved April 1, 2013Sept. 1, 2018. Published April 2013September 2018. Originally approved in 2001. Last previous edition approved in 20072013 as
D6670 – 01 (2007).D6670 – 13. DOI: 10.1520/D6670-13.10.1520/D6670-18.
2
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6670 − 18
IEEE/ASTM SI-10 Standard for Use of the International System of Units (SI): T
...

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ASTM D6589-23(Guide)
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5.1 Guidance is provided on designing model evaluation performance procedures and on the difficulties that arise in statistical evaluation of model performance caused by the stochastic nature of dispersion in the atmosphere. It is recognized there are examples in the literature where, knowingly or unknowingly, models were evaluated on their ability to describe something which they were never intended to characterize. This guide is attempting to heighten awareness, and thereby, to reduce the number of “unknowing” comparisons. A goal of this guide is to stimulate development and testing of evaluation procedures that accommodate the effects of natural variability. A technique is illustrated to provide information from which subsequent evaluation and standardization can be derived.
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ASTM
ASTM D8406-22(Practice)
Standard Practice for Performance Evaluation of Ambient Outdoor Air Quality Sensors and Sensor-based Instruments for Portable and Fixed-point Measurement

SIGNIFICANCE AND USE
5.1 This practice establishes standardized tests for the performance evaluation of sensor-based continuous instruments for ambient air quality measurements. Public and private air monitoring interests have manifested themselves as a driving force for the deployment of air quality sensors and instruments to quantify air pollutant concentrations in communities, around schools, around industrial facilities, and elsewhere. Users of air quality sensors require information on the performance and limitations of these devices so that informed decisions regarding their suitability for various purposes can be determined. This practice describes both laboratory and field tests that provide information on candidate instrument repeatability, sensitivity, linearity, cross-interferences, drift and comparability with more costly instruments typically used by entities such as government agencies. The air quality sensors are first evaluated in a laboratory chamber by comparing their response to a reference instrument and challenging the gas sensors with interferents. The sensors are then deployed outdoors for field testing at two sites with different climates against reference air quality instruments. This practice is intended to be referenced in standards and codes that establish minimum performance quality for sensor-based ambient outdoor air monitoring.  
5.2 This practice is intended for air quality sensors that measure one or more of the criteria pollutants in ambient air (ozone, carbon monoxide, nitrogen dioxide, sulfur dioxide, PM10 and PM2.5) that can be operated in outdoor environments and can log a concentration reading. It is not intended for devices or transducers that require additional enclosures for deployment outdoors or post-processing to convert their output signal into a pollutant concentration reading.  
5.3 It is anticipated that the main users of this practice will be manufacturers, developers, and distributors of outdoor air quality sensors, air quality agenc...
SCOPE
1.1 This practice establishes standardized tests for the performance evaluation of sensor-based continuous instruments for ambient outdoor air quality measurements. It describes both laboratory and field tests that provide information on candidate sensor repeatability, sensitivity, linearity, cross-interferences, drift, and comparability against reference instruments.  
1.2 This practice does not apply to sensors or instruments that remotely measure atmospheric pollutants using open path, lidar, or imaging technology.  
1.3 The evaluation procedures contained in this practice are for sensors that alone or in combination measure outdoor criteria pollutants in ambient air: particulate matter (PM2.5 and PM10), sulfur dioxide (SO2), ozone (O3), carbon monoxide (CO), or nitrogen dioxide (NO2) at concentrations that are relevant to public health.  
1.4 Testing is to be performed by a competent entity able to demonstrate that it operates in conformity with internationally accepted test laboratory quality standards such as ISO/IEC 17025.  
1.5 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 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.  
1.7 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.

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ASTM
ASTM D1914-95(2022)(Practice)
Standard Practice for Conversion Units and Factors Relating to Sampling and Analysis of Atmospheres

SIGNIFICANCE AND USE
3.1 ASTM requires the use of SI units in all its publications and their use in reporting atmospheric measurement data. However, there are historic data and even data currently reported that are based on a variety of units of measurement. This practice tabulates factors that are necessary to convert such data to SI and other units of measurement.  
3.2 IEEE/ASTM SI-10 does not list all the conversion factors commonly used in air pollution and meteorological fields. This practice supplements IEEE/ASTM SI-10.  
3.3 The values reported here were obtained from a number of standard publications. They were adjusted to five figures and organized in a rational order. All values reflect the latest information from the 16th General Conference on Weights and Measurements held in 1979.  
3.4 The factors in Table 1 are provided to change units of measurement from one system to related units in other systems, as well as to smaller or larger units in the same system.  
3.5 Values of units in the left column may be converted to values of units in the right column merely by multiplying by the conversion factor provided in the center column.  (A) For specific applications and exceptions, see Terminology D1356.
SCOPE
1.1 This practice provides units and factors useful for members of the air pollution and meteorological communities.  
1.2 This practice is used together with IEEE/ASTM SI-10, which discusses SI units and contains selected conversion factors for inter-relation of SI units and some commonly used non-metric units.  
1.3 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.

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ASTM
ASTM D2914-15(2022)(Test Method)
Standard Test Methods for Sulfur Dioxide Content of the Atmosphere (West-Gaeke Method)

SIGNIFICANCE AND USE
5.1 Sulfur dioxide is a major air pollutant, commonly formed by the combustion of sulfur-bearing fuels. The Environmental Protection Agency (EPA) has set primary and secondary air quality standards (7) that are designed to protect the public health and welfare.  
5.2 The Occupational Safety and Health Administration (OSHA) has promulgated exposure limits for sulfur dioxide in workplace atmospheres (8).  
5.3 These methods have been found satisfactory for measuring sulfur dioxide in ambient and workplace atmospheres over the ranges pertinent in 5.1 and 5.2.  
5.4 Method A has been designed to correspond to the EPA-Designated Reference Method (7) for the determination of sulfur dioxide.
SCOPE
1.1 These test methods cover the bubbler collection and colorimetric determination of sulfur dioxide (SO2) in the ambient or workplace atmosphere.  
1.2 These test methods are applicable for determining SO2 over the range from approximately 25 μg/m3 (0.01 ppm(v)) to 1000 μg/m3 (0.4 ppm(v)), corresponding to a solution concentration of 0.03 μg SO2/mL to 1.3 μg SO2/mL. Beer's law is followed through the working analytical range from 0.02 μg SO2/mL to 1.4 μg SO2/mL.  
1.3 The lower limit of detection is 0.075 μg SO2/mL (1),2 representing an air concentration of 25 μg SO2/m3 (0.01 ppm(v)) in a 30-min sample, or 13 μg SO2/m3 (0.005 ppm(v)) in a 24-h sample.  
1.4 These test methods incorporate sampling for periods between 30 min and 24 h.  
1.5 These test methods describe the determination of the collected (impinged) samples. A Method A and a Method B are described.  
1.6 Method A is preferred over Method B, as it gives the higher sensitivity, but it has a higher blank. Manual Method B is pH-dependent, but is more suitable with spectrometers having a spectral band width greater than 20 nm.
Note 1: These test methods are applicable at concentrations below 25 μg/m3 by sampling larger volumes of air if the absorption efficiency of the particular system is first determined, as described in Annex A4.
Note 2: Concentrations higher than 1000 μg/m3 can be determined by using smaller gas volumes, larger collection volumes, or by suitable dilution of the collected sample with absorbing solution prior to analysis.  
1.7 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.8 Warning—Mercury has been designated by many regulatory agencies as a hazardous material that can cause serious medical issues. Mercury, or its vapor, has been demonstrated to be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury containing products. See the applicable product Safety Data Sheet (SDS) for additional information. Users should be aware that selling mercury and/or mercury containing products into your state or country may be prohibited by law.  
1.9 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. For specific precautionary statements, see 8.3.1, Section 9, and A3.1.3.  
1.10 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.

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ASTM
ASTM D4323-21(Test Method)
Standard Test Method for Hydrogen Sulfide in the Atmosphere by Rate of Change of Reflectance

SIGNIFICANCE AND USE
5.1 Hydrogen sulfide is an odorous substance which is offensive even at low concentrations in the atmosphere and toxic at higher levels. It may be a product of biological processes in the absence of oxygen, as may occur in municipal landfills. It is emitted from geothermal sources, occurs in oil and gas, and may be emitted from industrial processes. Measurement is required for air pollution studies, for pollution control, environmental justice based monitoring, and for plume characterization. This test method is intended for hydrogen sulfide content up to 3000 ppbv. Measurement of hydrogen sulfide above this concentration in gaseous fuels, carbon dioxide or other gaseous matrices is described in Test Method D4084. Equipment described is suitable for fixed site or for mobile monitoring.
SCOPE
1.1 This test method covers the automatic continuous determination of hydrogen sulfide (H2S) in the atmosphere or in gaseous samples in the range from one part per billion by volume (1 ppb/v) to 3000 ppb/v. Information obtained may be used for air-pollution studies, fence-line monitoring, and other source emission monitoring.  
1.2 The range may be extended by appropriate dilution techniques or by equipment modification.  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound 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. (See Section 9 for specific safety precautionary statements.)  
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.

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ASTM
ASTM D3162-21(Test Method)
Standard Test Method for Carbon Monoxide in the Atmosphere (Continuous Measurement by Nondispersive Infrared Spectrometry)

SIGNIFICANCE AND USE
5.1 Determination of carbon monoxide is essential to evaluation of many air pollution concerns and pollution control strategies. This test method derives significance from providing such determination.  
5.2 Carbon monoxide is formed in the process of incomplete combustion of hydrocarbon fuels, and is a constituent of the exhaust of gasoline engines. The Environmental Protection Agency (EPA) has set primary and secondary air quality standards for CO that are designed to protect the public health and welfare (3, 4).  
5.3 This test method is suitable for measurements appropriate for the purposes noted in 5.1 and 5.2.
SCOPE
1.1 This test method is applicable to the determination of the carbon monoxide (CO) concentration of the atmosphere between 0.6 mg/m3 (0.5 ppm(v)) and 115 mg/m3 (100 ppm(v)). The measuring principle is based on the absorption of infrared radiation by CO in the 4.7 μm region (1).2  
1.2 The test method has a limit of detection of about 0.6 mg/m3 (0.5 ppm(v)) carbon monoxide in air.  
1.3 The values stated in SI units are to be regarded as standard. The values and units in parentheses 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. See Section 9 for additional precautions.  
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.

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