NIST912B

Urea

• Sinónimos: Urea
• UNSPSC Code: 41116107
• NACRES: NA.24

Propiedades

• grade: certified reference material
• description: NIST^® SRM^® 921b
• form: crystals
• packaging: pkg of 25 g
• manufacturer/tradename: NIST^® SRM 912b
• technique(s): Karl-Fischer titration: suitable; NMR: suitable; ion chromatography: suitable; liquid chromatography (LC): suitable
• application(s): clinical testing

Descripción

General description

Each unit of SRM 912b contains 25 grams of high-purity crystalline urea. A unit of SRM 912b consists of 25 g of high-purity crystalline urea.

SRM 912B_cert

SRM 912B_SDS

Application

NIST Urea is intended for use as a primary calibrant for the measurement procedures and validating methods used in clinical pathology laboratories to determine urea blood nitrogen.

Other Notes

• The NIST-certified mass fraction value for urea was determined using a mass balance approach for purity assessment, and the values are metrologically traceable to the SI derived unit for mass fraction, expressed as a percentage.
• Maintenance and expiration of SRM certification, instructions for handling, storage, and use are provided on NIST certificate.

Legal Information

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

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