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Significance and Use
4.1 Upper limits for the formaldehyde emission rates have been established for wood panel building products made with urea-formaldehyde adhesives and permanently installed in homes or used as components in kitchen cabinets and similar industrial products. This test method is intended for use in conjunction with the test method referenced by HUD 24 for manufactured housing and by Minnesota Statutes for housing units and building materials. This method may also be used for monitoring products for compliance to the California Air Resources Board (CARB) regulation for composite wood products. This test method provides a means of testing smaller samples and reduces the time required for testing.
4.2 Formaldehyde concentration levels obtained by this small-scale method may differ from expected in full-scale indoor environments. Variations in product loading, temperature, relative humidity, and air exchange will affect formaldehyde emission rates and thus likely indoor air formaldehyde concentrations.
4.3 This test method requires the use of a chamber of 0.02 to 1 m3 in volume to evaluate the formaldehyde concentration in air using the following controlled conditions:
4.3.1 Conditioning of specimens prior to testing,
4.3.2 Exposed surface area of the specimens in the test chamber,
4.3.3 Test chamber temperature and relative humidity,
4.3.4 The Q/A ratio, and
4.3.5 Air circulation within the chamber.
1.1 This test method measures the formaldehyde concentrations in air emitted by wood product test specimens under defined test conditions of temperature and relative humidity. Results obtained from this small-scale chamber test method are intended to be comparable to results obtained from testing larger product samples by the large chamber test method for wood products, ASTM Test Method . The results may be correlated to values obtained from ASTM Test Method . The quantity of formaldehyde in an air sample from the small chamber is determined by a modification of NIOSH 3500 chromotropic acid test procedure. As with ASTM Test Method , other analytical procedures may be used to determine the quantity of formaldehyde in the air sample provided that such methods give results comparable to those obtained by using the chromotropic acid procedure. However, the test results and test report must be properly qualified and the analytical procedure employed must be accurately described.
1.2 The wood-based panel products to be tested by this test method are characteristically used for different applications and are tested at different relative amounts or loading ratios to reflect different applications. This is a test method that specifies testing at various loading ratios for different product types. However, the test results and test report must be properly qualified and must specify the make-up air flow, sample surface area, and chamber volume.
1.3 Ideal candidates for small-scale chamber testing are products relatively homogeneous in their formaldehyde release characteristics. Still, product inhomogeneities must be considered when selecting and preparing samples for small-scale chamber testing.
1.4 The values stated in SI units are the standard values. Any values given in parentheses are for information only.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D3195 Practice for Rotameter Calibration
D5197 Test Method for Determination of Formaldehyde and Other Carbonyl Compounds in Air (Active Sampler Methodology)
D5221 Test Method for Continuous Measurement of Formaldehyde in Air
E77 Test Method for Inspection and Verification of Thermometers
E220 Test Method for Calibration of Thermocouples By Comparison Techniques
E337 Test Method for Measuring Humidity with a Psychrometer (the Measurement of Wet- and Dry-Bulb Temperatures)
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E741 Test Method for Determining Air Change in a Single Zone by Means of a Tracer Gas Dilution
E1333 Test Method for Determining Formaldehyde Concentrations in Air and Emission Rates from Wood Products Using a Large Chamber
U.S. Department of Housing and Urban Development StandardHUD 24 CFR 3280, Manufactured Home Construction and Safety Standards
National Institute for Occupational Safety and Health StandardNIOSH 3500 Formaldehyde Method Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://www.access.gpo.gov; request U.S. Dept. of Health and Human Services, 1989.
ICS Number Code 13.040.20 (Ambient atmospheres)
UNSPSC Code 12352501(Formaldehydes)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D6007-14, Standard Test Method for Determining Formaldehyde Concentrations in Air from Wood Products Using a Small-Scale Chamber, ASTM International, West Conshohocken, PA, 2014, www.astm.orgBack to Top