NIST640G

Line Position And Line Shape Standard for Powder Diffraction

(Silicon powder) NIST^® SRM^® 640G

• Synonym(e): Silicone powder
• UNSPSC-Code: 41116107
• NACRES: NA.24

Eigenschaften

• Form: powder
• Verpackung: pkg of 7.5 g
• Hersteller/Markenname: NIST^®
• Methode(n): diffraction/scattering: suitable

Beschreibung

Allgemeine Beschreibung

The Standard Reference Material (SRM) was prepared from ultra-high purity, intrinsic silicon boules that were crushed and jet milled to a median particle size of 4.1μm. The resulting powder was then annealed under gettered argon at 1000 °C for two hours and bottled under argon.

SRM 640F_Cert

SRM 640F_SDS

Anwendung

This SRM is intended for use as a standard for calibration of diffraction line positions and line shapes, determined through powder diffractometry.

Leistungsmerkmale und Vorteile

• A unit of SRM 640f consists of approximately 7.5 g of silicon powder bottled under argon.
  
• Analysis of X-ray powder diffraction data indicated that the SRM material is homogeneous with respect to diffraction properties.
  
• SRM 640f was bottled under argon to protect against humidity.
  
• The certification data was analyzed using the FPA method with Pawley refinements as implemented in TOPAS.
  
• Expiration details and storage instructions are available in the NIST certificate.

Sonstige Hinweise

Please download a current certificate at nist.gov/SRM for current analytes and certified values.

Rechtliche Hinweise

NIST is a registered trademark of National Institute of Standards and Technology

SRM is a registered trademark of National Institute of Standards and Technology

Sicherheitshinweise

• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: nwg
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable