ASTM D6670-2018 pdf free download

ASTM D6670-2018 pdf free download.Standard Practice for Full-Scale Chamber Determination of Volatile Organic Emissions from Indoor Materials/Products
1. Scope
1.1 This practice is intended for determining volatile or- ganic 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 condi- tions 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, perfor- mance 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 ofthe general principles and procedures (such as methods for evaluating the general performance ofthe chamber system) may also be useful for the determination of other chemical emissions (for example, ozone, nitrogen diox- ide). Determination ofaerosol 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 appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.7 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions—For definitions and terms commonly used in ASTM standards, including this standard, refer to Terminol- ogy D1356. For an explanation of units, symbols, and conver- sion factors, refer to Practice D1914. 3.2 Definitions ofTerms Specific to This Standard: 3.2.1 air change rate (1/h)—the flow rate of air into the chamber divided by the net chamber volume usually expressed in unites of 1/h. The clean air flow rate may be measured directly at the clean air supply duct. The clean air change rate can also be determined by conducting a tracer gas test (for example, a tracer gas decay test) in the chamber. Note that the air exchange rate (in units of 1/h) is abbreviated as ACH. 3.2.2 chamber loading ratio—the total amount of test speci- men exposed in the chamber divided by the net or corrected internal air volume of the chamber. 3.2.3 clean air—defined in this practice as air that satisfies all of the following criteria: (1) concentrations of total VOCs ≤10 µg/m 3 ; (2) concentration of any individual compound to be mea- sured ≤2.0 µg/m 3 ; (3) particle concentrations ≤35 200 particles/m 3 of 0.5 µm diameter or larger (that is, the ISO Class 6 according to ISO 14644-1:1999; (4) concentrations of ozone and other potentially reactive species such as nitrogen oxides (NO x ) and sulfur oxides (SO x ) should be at or below detectable levels (for example, <10 µg/m 3 ). 3.2.4 dry materials—materials such as carpets, wood-based products, and polyvinyl chloride (PVC) floorings, whose emission is generally controlled by diffusion processes within the bulk of the material.3.2.5 emission factor—the mass of a VOC or total VOC emitted per unit time and per unit amount of source tested. Depending on the type of source, the amount of source may be expressed by its exposed surface area (that is, an area source such as a painted gypsum wallboard surface), its dominant dimension (that is, a line source such as a caulk or sealant), its mass, or its standard setup (that is, a “unit” source such as a predefined work station system). As a result, the unit for the emission factor will be mg/h, mg/(m h), mg/(m 2 h), mg/(kg h), and mg/(m 3 h) for the “unit,” line, area, mass, and volume emission sources, respectively. 3.2.6 emission rate—see definition of emission rate in Terminology D1356 – 17. 3.2.7 full-scale chamber—a room-size chamber that can house the material/product to be tested in its real dimensions, and provide the required environmental conditions (temperature, relative humidity, air exchange, and air velocity) that are similar to the material/product use in full-scale room conditions.