1.70244
Tungsten standard solution
traceable to SRM from NIST (NH4)2WO4 in H2O 1000 mg/l W Certipur®
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About This Item
NACRES:
NA.24
UNSPSC Code:
41116107
grade
certified reference material
Quality Level
product line
Certipur®
concentration
1000 mg/L W in water
technique(s)
AAS: suitable
pH
6 (20 °C in H2O)
density
1.00 g/cm3 at 20 °C
application(s)
industrial qc
pharmaceutical
format
single component solution
storage temp.
15-25°C
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.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.
Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.
Application
Tungsten standard solution can be used as a calibration standard for atomic absorption spectroscopy.
Analysis Note
1000 mg/L W in water, prepared with high-purity (NH4)2WO4 and water
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
Storage Class
12 - Non Combustible Liquids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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