1.70244

Tungsten standard solution

traceable to SRM from NIST (NH₄)₂WO₄ in H₂O 1000 mg/l W Certipur^®

• UNSPSC-Code: 41116107
• NACRES: NA.24

Eigenschaften

• Qualität: certified reference material
• Qualitätsniveau: 300
• Produktlinie: Certipur^®
• Konzentration: 1000 mg/L W in water
• Methode(n): AAS: suitable
• pH-Wert: 6 (20 °C in H₂O)
• Dichte: 1.00 g/cm³ at 20 °C
• Anwendung(en): industrial qc; pharmaceutical
• Format: single component solution
• Lagertemp.: 15-25°C

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

Tungsten standard solution can be used as a calibration standard for atomic absorption spectroscopy.

Hinweis zur Analyse

1000 mg/L W in water, prepared with high-purity (NH₄)₂WO₄ and water

Sonstige Hinweise

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

Rechtliche Hinweise

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Sicherheitshinweise

• Lagerklassenschlüssel: 12 - Non Combustible Liquids
• WGK: WGK 1