ASTM D7399 - 18
Standard Test Method for Determination of the Amount of Polypropylene in Polypropylene/Low Density Polyethylene Mixtures Using Infrared Spectrophotometry
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Significance and Use
5.1 In recycling PP and LDPE, it is important to the end product properties as well as to the processing conditions to know what the composition of the mixture is.
1. Scope
1.1 This test method uses an infrared spectrometer for determining the amount of polypropylene (PP) physically mixed in with low density polyethylene – usually for recycling purposes.
Note 1: Quantitative determinations require several standard mixtures in the concentration range of interest and well defined baseline anchoring points. See Practice E168 for guidance.
1.2 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.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
D2238 Test Methods for Absorbance of Polyethylene Due to Methyl Groups at 1378 cm-1
E131 Terminology Relating to Molecular Spectroscopy
E168 Practices for General Techniques of Infrared Quantitative Analysis
E932 Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers
E1421 Practice for Describing and Measuring Performance of Fourier Transform Mid-Infrared (FT-MIR) Spectrometers: Level Zero and Level One Tests
ICS Code
ICS Number Code 83.080.20 (Thermoplastic materials)
UNSPSC Code
UNSPSC Code 13102022(Polypropylene PP); 13102018(Low Density Polyethylene LDPE)
Referencing This Standard
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DOI: 10.1520/D7399-18
Citation Format
ASTM D7399-18, Standard Test Method for Determination of the Amount of Polypropylene in Polypropylene/Low Density Polyethylene Mixtures Using Infrared Spectrophotometry, ASTM International, West Conshohocken, PA, 2018, www.astm.org
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