{
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  "@type": [
    "nrdp:PublicDataResource",
    "dcat:Dataset"
  ],
  "_extensionSchemas": [
    "https://data.nist.gov/od/dm/nerdm-schema/pub/v0.7#/definitions/PublicDataResource"
  ],
  "topic": [
    {
      "@type": "Concept",
      "scheme": "https://data.nist.gov/od/dm/nist-themes/v1.1",
      "tag": "Standards: Reference materials"
    }
  ],
  "keyword": [
    "SRM",
    "Standard Reference Material",
    "coal",
    "sulfur",
    "mercury",
    "chlorine",
    "Energy"
  ],
  "landingPage": "https://data.nist.gov/od/id/4765EE7CC5B9A396E0531A57068160031662",
  "title": "SRM 2685c Bituminous Coal (Nominal Mass Fraction 5 % Sulfur)",
  "theme": [
    "Standards: Reference materials"
  ],
  "programCode": [
    "006:052"
  ],
  "description": [
    "This  Standard  Reference  Material (SRM)  is  intended  primarily  for  use  in  the  evaluation  of  techniques used  in  the analysis of coals and materials of a similar matrix.  A unit of SRM 2685c consists of 50 g of bituminous coal ground to pass a 250 ?m (60 mesh) sieve, homogenized, and packaged in an amber glass bottle under an argon atmosphere, and sealed in an aluminized bag."
  ],
  "bureauCode": [
    "006:55"
  ],
  "contactPoint": {
    "hasEmail": "mailto:srms@nist.gov",
    "fn": "Steven J. Choquette"
  },
  "accessLevel": "public",
  "@id": "ark:/88434/mds00mfd27",
  "publisher": {
    "@type": "org:Organization",
    "name": "National Institute of Standards and Technology"
  },
  "license": "https://www.nist.gov/open/license",
  "language": [
    "en"
  ],
  "modified": "2017-01-05",
  "ediid": "4765EE7CC5B9A396E0531A57068160031662",
  "version": "1.0.2",
  "versionHistory": [
    {
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      "issued": "2017-01-05",
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      "description": "initial release"
    }
  ],
  "components": [],
  "releaseHistory": {
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    "@type": [
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    "hasRelease": [
      {
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        "issued": "2017-01-05",
        "@id": "ark:/88434/mds00mfd27/pdr:v/1.0.0",
        "location": "https://data.nist.gov/od/id/ark:/88434/mds00mfd27/pdr:v/1.0.0",
        "description": "initial release"
      },
      {
        "version": "1.0.1",
        "issued": "2017-01-05 00:00:00",
        "@id": "ark:/88434/mds00mfd27/pdr:v/1.0.1",
        "location": "https://data.nist.gov/od/id/ark:/88434/mds00mfd27/pdr:v/1.0.1",
        "description": "metadata update"
      },
      {
        "version": "1.0.2",
        "issued": "2017-01-05",
        "@id": "ark:/88434/mds00mfd27/pdr:v/1.0.2",
        "location": "https://data.nist.gov/od/id/ark:/88434/mds00mfd27/pdr:v/1.0.2",
        "description": "metadata update"
      }
    ]
  },
  "doi": "doi:10.18434/mds2-1662",
  "status": "available",
  "annotated": "2026-08-05T12:57:59.919324",
  "issued": null
}