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Merck

1.88054

Water Standard Oven 1%

Certified Reference Material for KF oven method Aquastar®

別名:

AQUASTAR® Water Standard Oven 1% for KF oven method

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この商品について

NACRES:
NA.24
UNSPSC Code:
41115601

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製品名

Water Standard Oven 1%, Certified Reference Material for KF oven method Aquastar®

grade

certified reference material

agency

ISO 17025, 17034

product line

Aquastar®

form

solid

reaction suitability

reaction type: water standard for Karl Fischer titration

packaging

glass bottle of 5 g

technique(s)

Karl-Fischer titration: suitable

bulk density

460 kg/m3

format

neat

storage temp.

15-25°C

Quality Level

300

関連するカテゴリー

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.

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 digital 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)

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. 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.


In our effort to be more sustainable, we′re going digital with COAs-download them directly from our website. Download your certificate at https://www.sigmaaldrich.com/US/en/documents-search to view certified values, including uncertainty and expiry date.

Other Notes

Replaces: 1.88054.0005

Legal Information

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

保管分類

13 - Non Combustible Solids

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

試験成績書（COA）

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資料

Karl Fischer Titration Tips: Water Content Measurement

Methods including internal extraction, external extraction, and Karl Fischer oven ensure accurate water content determination by titration.

Coulometric Titration - Faster and More Efficient New Aquastar® Coulometric Reagent for Karl Fischer Water Determination

New Aquastar® Karl Fischer Anolyte for precise and reproducible determination of low water content in the range of 10 ppm to 10000 ppm for cells without a diaphragm.

プロトコル

Determination of Water in Cannabis & Hemp by Karl Fischer Titration

Karl Fischer titration offers accurate water content determination in hemp samples compared to the loss on drying method.

Water Determination in Instant Coffee by Karl Fischer Titration

Foodstuffs often provide a challenge for the water determination by Karl-Fischer. Instant Coffee is such a sample matrix and its water content has influence on quality and shelf life.

グローバルトレードアイテム番号

カタログ番号GTIN
1.88054.000504022536954219

ライフサイエンス、有機合成、材料科学、クロマトグラフィー、分析など、あらゆる分野の研究に経験のあるメンバーがおります。.

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