1.88054

Water Standard

1%, Certified Reference Material for KF oven method Aquastar^®

• 동의어(들): AQUASTAR^® Water Standard Oven 1% for KF oven method
• UNSPSC 코드: 41115601
• NACRES: NA.24

속성

• 제품명: Water Standard Oven 1%, Certified Reference Material for KF oven method Aquastar^®
• Grade: certified reference material
• Quality Level: 300
• Agency: ISO 17025, 17034
• 제품 라인: Aquastar^®
• 양식: solid
• 포장: glass bottle of 5 g
• 기술: Karl-Fischer titration: suitable
• 벌크 밀도: 460 kg/m³
• 형식: neat
• 저장 온도: 15-25°C

설명

일반 설명

It is a solid standard prepared gravimetrically from high-purity reagents. The water content of it is determined by coulometric Karl Fischer oven method at 170°C with an extraction time of 600 seconds following ISO 760. Additionally, its measured water content is verified by thermogravimetric analysis. Unlike other solid standards such as tartrate, lactose, or citrate, the water standard oven 1% has significantly lower water content and can be used over a broad temperature range of 150°C to 400°C due to its inorganic composition. It is characterized in accredited quality control (QC) laboratory according to DIN EN ISO/IEC 17025.

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.

애플리케이션

Water standard oven 1% is used as certified reference material to check the accuracy of coulometric and volumetric water determinations, according to ISO 9001 chapter 7.1.5 “Monitoring and measuring resources”, using Karl Fischer oven and thermobalances. But its low water content of 1% makes it particularly suitable for water determinations using Karl Fischer oven with a coulometer.

특징 및 장점

• Packed in convenient glass bottles with the material subjected to stability and homogeneity studies following ISO 17034 and ISO Guide 35
• Supplied with a batch-specific certificate of analysis (CoA) having data on exact measured water, uncertainty, method of analysis, measuring method, and minimum shelf life
• Characterized in an ISO/IEC 17025 and ISO 17034 accredited calibration laboratory
• Directly traceable to SI unit (kg)

결합

Replaces: 1.88054.0005

법적 정보

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

안전성 정보

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 2
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable