Tungsten ICP standard

Analysis Note
1000 mg/L W in H2O, prepared withhigh-purity (NH4)2WO4 and water
Application
Tungsten ICP standard is a suitable calibration standard for elemental analysis by Inductively Coupled Plasma (ICP) technique.
General description
This certified reference material (CRM) is produced in accordance with ISO 17034 and characterized in accordance with ISO/IEC 17025. This CRM is traceable to SI unit kg and measured against primary material from a National Metrology Institute (NMI), e.g. NIST.
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Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty, date of expiry, and detailed information about trace impurities.
Other Notes
For a complete product listing of our Certipur® range of CRMs for ICP and AAS, technical information, and example certificates please visit our ICP & AAS standards website
Legal Information
CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany