Standard Reference Material 2775 Sulfur in Foundry Coke - This Standard Reference Material (SRM) is intended primarily for use in the evaluation of test methods and for the calibration of instruments used to determine sulfur in foundry (metallurgical) coke. Each unit of SRM 2775 consists of 50 g of foundry coke that was ground to pass a 60 mesh (250 ?m) sieve, homogenized, and bottled under an argon atmosphere. This data is public in the Certificate of Analysis for this material.

Standard Reference Material 2776 Sulfur in Furnace Coke - This Standard Reference Material (SRM) is intended primarily for use in the evaluation of test methods and for the calibration of instruments used to determine sulfur in furnace (metallurgical) coke. Each unit of SRM 2776 consists of 50 g of furnace coke that was ground to pass a 250 ?m (60 mesh) sieve, homogenized, and bottled under an argon atmosphere. This data is public in the Certificate of Analysis for this material.

Information on a variety of topics that assess civic health: interactions with family, friends, neighbors; political engagement; group membership and participation; frequency of volunteering activity; and donations to political or charitable organizations.

Information on person and household broadband (high-speed Internet) use, where it is used, by what types of devices, what type of service provider, and other characteristics.

Information on a variety of topics that assess civic health: interactions with family, friends, neighbors; political engagement; group membership and participation; frequency of volunteering activity; and donations to political or charitable organizations.

Information on person and household broadband (high-speed Internet) use, where it is used, by what types of devices, what type of service provider, and other characteristics.

Information on a variety of topics that assess civic health: interactions with family, friends, neighbors; political engagement; group membership and participation; frequency of volunteering activity; and donations to political or charitable organizations.

Information on person and household broadband (high-speed Internet) use, where it is used, by what types of devices, what type of service provider, and other characteristics.

Information on a variety of topics that assess civic health: interactions with family, friends, neighbors; political engagement; group membership and participation; frequency of volunteering activity; and donations to political or charitable organizations.

Information on person and household broadband (high-speed Internet) use, where it is used, by what types of devices, what type of service provider, and other characteristics.