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grade
certified reference material
Quality Level
Agency
ISO 17025, 17034
product line
Aquastar®
form
solid
technique(s)
Karl-Fischer titration: suitable
titration: suitable
bulk density
460 kg/m3
format
neat
storage temp.
15-25°C
Related Categories
General description
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.
Application
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.
Packaging
5 g in Glass bottle
Features and Benefits
- 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)
Linkage
Replaces: 1.88054.0005
Legal Information
AQUASTAR is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificate of Analysis
Enter Lot Number to search for Certificate of Analysis (COA).
Certificate of Quality
Enter Lot Number to search for Certificate of Quality (COQ).
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