ASTM D6288-17
(Practice)Standard Practice for Separation and Washing of Recycled Plastics Prior to Testing
Standard Practice for Separation and Washing of Recycled Plastics Prior to Testing
SIGNIFICANCE AND USE
5.1 Dirt, paper and mixtures of polymeric materials complicate the interpretation of data from procedures used to identify the contaminants in recycled plastics.
SCOPE
1.1 This practice describes a procedure for separating recycled plastics based on their color and a procedure for washing dirty, ground plastic, which results in separation of light materials (density 3). This practice is not intended to represent generic washing procedures used in the plastics recycling industry. The described procedures are solely for preparation of plastic samples for use in other analytical tests. The procedure includes a room temperature wash step to facilitate separation of paper (for example, labels) followed by washing at an elevated temperature.
Note 1: Although not presented as a quantitative method, the procedure presented in this practice may be used to provide quantitative results. The user assumes the responsibility to verify the reproducibility of quantitative results.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 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.
Note 2: There is no known ISO equivalent to this standard.
1.4 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
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Designation: D6288 − 17
Standard Practice for
Separation and Washing of Recycled Plastics Prior to
1
Testing
This standard is issued under the fixed designation D6288; 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* D1600 Terminology for Abbreviated Terms Relating to Plas-
tics
1.1 This practice describes a procedure for separating re-
D3030 Test Method for Volatile Matter (Including Water) of
cycled plastics based on their color and a procedure for
Vinyl Chloride Resins
washing dirty, ground plastic, which results in separation of
3 D5814 Practice for Determination of Contamination in Re-
light materials (density <1.00 g/cm ). This practice is not
cycled Poly(Ethylene Terephthalate) (PET) Flakes and
intended to represent generic washing procedures used in the
Chips Using a Plaque Test
plastics recycling industry. The described procedures are solely
D5991 Practice for Separation and Identification of Poly(Vi-
for preparation of plastic samples for use in other analytical
nyl Chloride) (PVC) Contamination in Poly(Ethylene
tests. The procedure includes a room temperature wash step to
Terephthalate) (PET) Flake
facilitate separation of paper (for example, labels) followed by
E2251 Specification for Liquid-in-Glass ASTM Thermom-
washing at an elevated temperature.
eters with Low-Hazard Precision Liquids
NOTE 1—Although not presented as a quantitative method, the proce-
IEEE/ASTM SI-10 Standard for Use of the International
dure presented in this practice may be used to provide quantitative results.
System of Units (SI): The Modern Metric System
The user assumes the responsibility to verify the reproducibility of
quantitative results.
3. Terminology
1.2 The values stated in SI units are to be regarded as the
standard. 3.1 The terminology used in this practice is in accordance
with Terminology D1600. Units and symbols are in accordance
1.3 This standard does not purport to address all of the
with Standard IEEE/ASTM SI-10.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3.2 Definitions of Terms Specific to This Standard:
priate safety, health, and environmental practices and deter-
3.2.1 light material—materials with densities less than 1.00
3
mine the applicability of regulatory limitations prior to use.
g/cm .
NOTE 2—There is no known ISO equivalent to this standard.
4. Summary
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4.1 Different colored plastic materials are readily distin-
ization established in the Decision on Principles for the
guished by visual inspection of a sample.
Development of International Standards, Guides and Recom-
4.2 Labels, glue residues and other plastics may absorb the
mendations issued by the World Trade Organization Technical
dyes used in some procedures for identifying contaminants or
Barriers to Trade (TBT) Committee.
these other contaminants may exhibit interfering fluorescence.
Consequently, a standard procedure is provided for washing
2. Referenced Documents
the plastic prior to examination by these tests.
2
2.1 ASTM Standards:
4.3 This practice utilizes a room temperature wash step to
facilitate separation of paper followed by washing at an
1
This practice is under the jurisdiction of ASTM Committee D20 on Plastics and elevated temperature to permit separation of plastics and other
is the direct responsibility of Subcommittee D20.95 on Recycled Plastics.
contaminants based on densities. The room temperature wash
Current edition approved Dec. 1, 2017. Published January 2018. Originally
step effectively removes labels without activating some adhe-
approved in 1998. Last previous edition approved in 2015 as D6288 - 15. DOI:
sives.
10.1520/D6288-17.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
NOTE 3—The dye and fluorescence tests that may require plastic
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
washed by this procedure are specifically designed to detect poly(vinyl
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. chloride) (PVC) contamination.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6288 − 17
4.4 Washed recycled plastic materials are then used for tests 8.2 Room Temperature Washing Procedure:
such as those de
...
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: D6288 − 15 D6288 − 17
Standard Practice for
Separation and Washing of Recycled Plastics Prior to
1
Testing
This standard is issued under the fixed designation D6288; 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 describes a procedure for separating recycled plastics based on their color and a procedure for washing dirty,
3
ground plastic, which results in separation of light materials (density <1.00 g/cm ). This practice is not intended to represent
generic washing procedures used in the plastics recycling industry. The described procedures are solely for preparation of plastic
samples for use in other analytical tests. The procedure includes a room temperature wash step to facilitate separation of paper (for
example, labels) followed by washing at an elevated temperature.
NOTE 1—Although not presented as a quantitative method, the procedure presented in this practice may be used to provide quantitative results. The
user assumes the responsibility to verify the reproducibility of quantitative results.
1.2 The values stated in SI units are to be regarded as the standard.
1.3 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
NOTE 2—There is no known ISO equivalent to this standard.
1.4 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:
D1600 Terminology for Abbreviated Terms Relating to Plastics
D3030 Test Method for Volatile Matter (Including Water) of Vinyl Chloride Resins
D5814 Practice for Determination of Contamination in Recycled Poly(Ethylene Terephthalate) (PET) Flakes and Chips Using
a Plaque Test
D5991 Practice for Separation and Identification of Poly(Vinyl Chloride) (PVC) Contamination in Poly(Ethylene Terephthalate)
(PET) Flake
D7209E2251 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and ProductsSpeci-
fication for Liquid-in-Glass ASTM Thermometers with Low-Hazard Precision Liquids (Withdrawn 2015)
IEEE/ASTM SI-10 Standard for Use of the International System of Units (SI): The Modern Metric System
3. Terminology
3.1 The terminology used in this practice is in accordance with Terminology D1600 and Guide D7209. Units and symbols are
in accordance with Standard IEEE/ASTM SI-10.
3.2 Definitions of Terms Specific to This Standard:
3
3.2.1 light material—materials with densities less than 1.00 g/cm .
1
This practice is under the jurisdiction of ASTM Committee D20 on Plastics and is the direct responsibility of Subcommittee D20.95 on Recycled Plastics.
Current edition approved Oct. 1, 2015Dec. 1, 2017. Published October 2015January 2018. Originally approved in 1998. Last previous edition approved in 20092015 as
D6288 - 09.D6288 - 15. DOI: 10.1520/D6288-15.10.1520/D6288-17.
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.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6288 − 17
4. Summary
4.1 Different colored plastic materials are readily distinguished by visual inspection of a sample.
4.2 Labels, glue residues and other plastics may absorb the dyes used in some procedures for identifying contaminants or these
other contaminants may exhibit interfering fluorescence. Consequently, a standard procedure is provided for washing the plastic
prior to examination by these tests.
4.3 This practice utilizes a room temperature wash step to facilitate separation of paper followed by washing at an elevated
...
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