ASTM D6691
Standard Test Method for Determining Aerobic Biodegradation of Plastic Materials in the Marine Environment by a Defined Microbial Consortium or Natural Sea Water Inoculum
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About This Item
ASTM D6691 is the standard test method for determining aerobic biodegradation of plastic materials in the marine environment by a defined microbial consortium or natural sea water inoculum. It provides a structured way to evaluate how plastics may break down under conditions relevant to seawater exposure. For product selection, material comparison, and environmental performance claims, this standard helps users apply a consistent testing approach and interpret results with greater confidence.
What is ASTM D6691?
ASTM D6691 is an ASTM standard focused on measuring aerobic biodegradation in marine conditions. Based on its title, the method uses either a defined microbial consortium or natural sea water inoculum to assess how plastic materials behave when exposed to oxygen and marine microorganisms. The standard is typically used as a technical reference for testing and comparing materials in a controlled way, supporting more consistent evaluation of biodegradation-related performance.
Where is ASTM D6691 used?
This standard is commonly used in laboratories and product evaluation workflows where plastic materials are assessed for marine biodegradation behavior. It is relevant to organizations working with plastic products or materials intended for environments where seawater exposure may be a concern. ASTM D6691 may also support research, development, and quality control activities when a defined method is needed to test biodegradation under marine-relevant aerobic conditions.
Why is ASTM D6691 important?
ASTM D6691 matters because it gives buyers, manufacturers, and testing teams a consistent method for evaluating biodegradation in a marine setting. That consistency can support product comparisons, compliance efforts, and more reliable technical claims. Using a recognized ASTM standard may also reduce uncertainty in procurement and quality control by aligning testing expectations and improving the comparability of results across different materials and laboratories.
- Marine aerobic biodegradation testing
- Defined microbial consortium or sea water inoculum
- Plastic material evaluation
- Consistent laboratory comparison
- Technical support for product claims
- Publication Date: 2024-06-21
- Publisher: ASTM
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