ASTM WK42045, Practice for Nitric Acid-Extraction of Elements from Ores and Related Metallurgical Materials Using Closed Vessel Microwave Heating, will be used to protect water used for drinking, recreational, and agricultural purposes from environmental impacts. According to one member of subcommittee responsible for its development, proposed standard will be used by laboratories to dissolve samples for metals analysis and comparison with other testing method solutions.
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