NIST912B

尿素

• 别名: Urea
• 分類程式碼代碼: 41116107
• NACRES: NA.24

属性

• 等級: certified reference material
• 描述: NIST^® SRM^® 921b
• 形狀: crystals
• 包裝: pkg of 25 g
• 製造商／商標名: NIST^® SRM 912b
• 技術: Karl-Fischer titration: suitable; NMR: suitable; ion chromatography: suitable; liquid chromatography (LC): suitable
• 應用: clinical testing

说明

一般說明

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

應用

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.

其他說明

• 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.

法律資訊

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

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