Within the European Union and worldwide, there is an increasing demand for more transparent and comparable analytical results. This is particularly true for water determinations according to Karl Fischer, it is therefore necessary to use reliable reference materials to ensure accurate results. The Aquastar® product line offers a series of excellent standards: in addition to their use in monitoring Karl Fischer equipment and performing titer determination of volumetric Karl Fischer reagents, they can also be used for checking measuring results in order to evaluate their accuracy. To ensure the highest quality, Aquastar® standards are manufactured under the strictest control and are accurately measured using validated procedures in our DIN EN ISO/IEC 17025 accredited calibration and testing laboratory for Karl Fischer titration.

Water standard oven 1% is an entirely solid standard for the Karl Fischer oven method. In contrast to other solid standards like lactose, citrate or tartrate, this standard has a considerably lower water content of only 1% and can be used over a wide temperature range from 140-400°C. The composition of the solid standard is based on an inorganic substance, which is stable even at high temperatures. In contrast, with organic substances decomposition reactions with formation of water may already set in at temperatures above 150°C, leading to erroneous results. The low water content of 1% is particularly suited when using the Karl Fischer oven with a coulometer. Each package contains a batch-specific certificate with the exact measured water content of the batch, uncertainty data, measuring methods - Karl Fischer method and thermogravimetry - and minimum shelf-life.

• Batch-specific Certificate of Analysis in the package for QM documentation
• Reliable and correct results