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Water Standard Oven 1%

Certified Reference Material for KF oven method Aquastar®


certified reference material

Nivel de calidad


ISO 17025, 17034

Línea del producto





Karl-Fischer titration: suitable
titration: suitable

densidad aparente

460 kg/m3



temp. de almacenamiento


Descripción general

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.


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.


5 , 5 g

Características y beneficios

  • 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)

Ligadura / enlace

Replaces: 1.88054.0005

Información legal

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

Código de clase de almacenamiento

13 - Non Combustible Solids



Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad 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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