SRM 3163 Tungsten (W) Standard Solution, Lot No. 140606

Published by National Institute of Standards and Technology | National Institute of Standards and Technology | Metadata Last Checked: June 27, 2025 | Last Modified: 2017-01-04 00:00:00

This Standard Reference Material (SRM) is intended for use as a primary calibration standard for the quantitative determination of tungsten. A unit of SRM 3163 consists of 50 mL of an acidified aqueous solution prepared gravimetrically to contain a known mass fraction of tungsten in a high-density polyethylene bottle sealed in an aluminized bag. The solution contains nitric acid at a volume fraction of approximately 7 % and hydrofluoric acid at a volume fraction of approximately 4 %, equivalent to amount of substance concentrations (molarities) of approximately 1.2 mol/L and 1.1 mol/L respectively. This data is public in the Certificate of Analysis for this material.

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Complete Metadata

bureauCode	[ "006:55" ]
identifier	4765EE7CC5DFA396E0531A57068160031700
landingPage	https://www-s.nist.gov/srmors/view_detail.cfm?srm=3163
language	[ "en" ]
programCode	[ "006:052" ]
theme	[ "Standards:Reference materials" ]