ASTM D4208
Standard Test Method for Total Chlorine in Coal by the Oxygen Vessel Combustion/Ion Selective Electrode Method
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About This Item
ASTM D4208 is the ASTM standard for determining total chlorine in coal using the oxygen vessel combustion/ion selective electrode method. It provides a controlled approach for measuring chlorine content in coal, which can be important for evaluation, handling, and downstream use decisions. By defining a recognized test method, ASTM D4208 helps support more consistent results across laboratories and purchasing workflows, while keeping the analysis tied to a specific, repeatable technical procedure.
Purpose of ASTM D4208
The purpose of this standard is to describe a test method for measuring total chlorine in coal after oxygen vessel combustion, followed by ion selective electrode measurement. This approach is intended to support laboratory testing with a defined procedure rather than relying on informal or inconsistent practices. ASTM D4208 is useful when coal characteristics need to be documented in a way that can support quality control, comparison of samples, and technically sound reporting within a recognized ASTM framework.
Common use cases of ASTM D4208
This standard is commonly used in coal testing laboratories and technical evaluation workflows where chlorine content must be measured in a consistent way. It may be applied during material characterization, incoming coal assessment, routine quality control, or specification review. ASTM D4208 is also relevant when buyers, suppliers, or testing teams need a common method for comparing results and documenting total chlorine in coal using a laboratory procedure based on combustion and ion selective electrode analysis.
Why ASTM D4208 matters
ASTM D4208 matters because it gives users a recognized method for obtaining repeatable total chlorine results in coal. That helps reduce uncertainty in testing and supports clearer communication between laboratories, procurement teams, and material suppliers. When a standard method is used, results are easier to compare, audit, and include in technical records. For organizations managing coal quality, this can improve confidence in acceptance decisions and reduce the risk of inconsistent analytical practices.
- Total chlorine measurement in coal
- Oxygen vessel combustion procedure
- Ion selective electrode analysis
- Laboratory quality control support
- Standardized test reporting
- Publication Date: 2020-09-10
- Publisher: ASTM
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