ASTM D6245-18
Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation

Standard No.

ASTM D6245-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D6245-18

Scope

1.1 This guide describes how measured values of indoor carbon dioxide (CO2) concentrations can be used in evaluations of indoor air quality and building ventilation. 1.2 This guide describes the determination of CO2 generation rates from people as a function of body size and level of physical activity. 1.3 This guide describes the experimentally-determined relationship between CO2 concentrations and the acceptability of a space in terms of human body odor. 1.4 This guide describes the following uses of indoor CO2 concentrations to evaluate building ventilation–mass balance analysis to determine the percent outdoor air intake at an air handler, the tracer gas decay technique to estimate whole building air change rates, and the constant injection tracer gas technique at equilibrium to estimate whole building air change rates. 1.5 This guide discusses the use of continuous monitoring of indoor and outdoor CO2 concentrations as a means of evaluating building ventilation and indoor air quality. 1.6 This guide discusses some concentration measurement issues, but it does not include or recommend a method for measuring CO2 concentrations. 1.7 This guide does not address the use of indoor CO2 to control outdoor air intake rates. 1.8 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. 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.

ASTM D6245-18 Referenced Document

• ASTM D1356 Standard Terminology Relating to Sampling and Analysis of Atmospheres*， 2024-04-22 Update
• ASTM D3249 Standard Practice for General Ambient Air Analyzer Procedures*， 2019-10-01 Update
• ASTM E741 Standard Test Method for Determining Air Change in a Single Zone by Means of a Tracer Gas Dilution*， 2023-07-01 Update

ASTM D6245-18 history

• 2018 ASTM D6245-18 Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation
• 2012 ASTM D6245-12 Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation
• 2007 ASTM D6245-07 Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation
• 1998 ASTM D6245-98(2002) Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation
• 1998 ASTM D6245-98 Standard Guide for Using Indoor Carbon Dioxide Concentrations to Evaluate Indoor Air Quality and Ventilation