This Standard Reference Material (SRM) is intended primarily for use in the evaluation of techniques employed in the determination of sulfur, mercury, chlorine, and ash content in coal and materials of a similar matrix. A unit of SRM 2693 consists of 50 g of bituminous coal ground to pass a 250 mum (60 mesh) sieve, homogenized, and packaged in an amber glass bottle and then sealed in an aluminized bag. For more information, please refer to the SDS and COA. SRM 2693 _SDS
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