1.70244
Tungsten standard solution
traceable to SRM from NIST (NH₄)₂WO₄ in H₂O 1000 mg/l W Certipur®
Sign Into View Organizational & Contract Pricing
All Photos(1)
About This Item
UNSPSC Code:
41116107
NACRES:
NA.24
Recommended Products
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 Code
12 - Non Combustible Liquids
WGK
WGK 1
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’.
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.
Contact Technical Service