ASTM D7399
Standard Test Method for Determination of the Amount of Polypropylene in Polypropylene/Low Density Polyethylene Mixtures Using Infrared Spectrophotometry
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About This Item
ASTM D7399 is the ASTM standard for determining the amount of polypropylene in polypropylene/low density polyethylene mixtures using infrared spectrophotometry. It provides a structured analytical approach for evaluating blend composition, helping users measure how much polypropylene is present in a mixed polymer sample. For quality control, material verification, and product comparison, this standard supports more consistent and defensible testing results when working with PP/LDPE mixtures.
Purpose of ASTM D7399
The purpose of ASTM D7399 is to define a test method for estimating the polypropylene content in mixtures of polypropylene and low density polyethylene by infrared spectrophotometry. In practical terms, it supports laboratory analysis of blended polymer materials where composition needs to be determined with repeatable instrument-based measurements. As a technical document, it is useful for users who need a standardized way to compare samples, monitor blend variation, or support material evaluation using infrared data.
Common use cases of ASTM D7399
This standard is commonly used in laboratories and technical environments that assess polypropylene/low density polyethylene mixtures. It may support incoming material verification, production control, formulation checking, and comparative analysis of polymer blends. ASTM D7399 is also relevant when infrared spectrophotometry is used to evaluate sample composition in a consistent, standardized way. It is especially useful where a measurable estimate of polypropylene content is needed for testing or quality assurance workflows.
Why ASTM D7399 matters
ASTM D7399 matters because it helps create consistency in how polypropylene content is determined in PP/LDPE mixtures. A standardized test method can reduce ambiguity in results, support procurement and acceptance decisions, and improve confidence in quality control data. For organizations that rely on polymer blend testing, ASTM D7399 can help align internal procedures with a recognized ASTM approach, making results easier to compare across samples, labs, or production lots.
- Infrared spectrophotometry-based test method
- Polypropylene content in PP/LDPE mixtures
- Supports material verification and QC
- Useful for blend comparison and analysis
- Standardized approach for lab testing
- Publication Date: 2020-08-12
- Publisher: ASTM
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