SRM 2585 Organic Contaminants in House Dust - This Standard Reference Material (SRM) is intended for use in evaluating analytical methods for the determination of selected polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyl (PCB) congeners, chlorinated pesticides, and polybrominated diphenyl ether (PBDE) congeners in house dust and similar matrices. All of the constituents for which certified, reference, and information values are provided in SRM 2585 were naturally present in the dust material before processing.

This Standard Reference Material (SRM) is a primary gas mixture for which the amount-of-substance fraction, expressed as concentration, may be related to secondary working standards. This SRM is intended for the calibration of instruments used for nitric oxide determinations and for other applications. 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.