ASTM D7731
Standard Test Method for Determination of Dipropylene Glycol Monobutyl Ether and Ethylene Glycol Monobutyl Ether in Sea Water by Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)
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About This Item
ASTM D7731 is a standard test method for determining dipropylene glycol monobutyl ether and ethylene glycol monobutyl ether in sea water by liquid chromatography/tandem mass spectrometry (LC/MS/MS). It is designed to support analytical testing where careful identification and measurement of these compounds in seawater are needed. By defining a consistent laboratory approach, this ASTM standard helps improve comparability of results and supports informed quality or compliance decisions.
What is ASTM D7731?
ASTM D7731 describes a test method for measuring two specific glycol ether compounds in sea water using LC/MS/MS. The title indicates a focused analytical procedure rather than a broad material specification, so its value lies in providing a repeatable framework for laboratory determination. In practice, the standard helps users apply a controlled test method for detecting dipropylene glycol monobutyl ether and ethylene glycol monobutyl ether in a marine water matrix with greater consistency.
Where is ASTM D7731 used?
This standard is typically used in laboratories and testing programs that analyze sea water for specific glycol ether constituents. It may be relevant for environmental monitoring, marine sampling, and related analytical workflows where seawater samples must be examined by LC/MS/MS. ASTM D7731 is also useful in quality control settings where a defined method is needed to support reliable measurement, documentation, and comparison of analytical results across different samples or testing events.
Why is ASTM D7731 important?
ASTM D7731 matters because it gives laboratories a recognized method for determining target compounds in sea water with a consistent analytical approach. That helps reduce variability, supports defensible results, and improves confidence in testing outcomes. For organizations relying on seawater analysis, this standard can aid compliance efforts, product evaluation, and risk management by providing a clear basis for measurement and reporting. ASTM D7731 also supports better alignment between testing parties.
- LC/MS/MS-based seawater analysis
- Target compounds: glycol ether constituents
- Laboratory testing consistency
- Quality control and result comparison
- Analytical method for marine water samples
- Publication Date: 2024-05-14
- Publisher: ASTM
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