EUROLAB, with its state-of-the-art accredited laboratories and expert team, provides precise and fast testing services within the scope of EN ISO 760 testing. Two titration methods are specified, depending on whether the endpoint is detected visually or electrometrically. The visual method is valid only for colorless solutions, but can be used when electrometric apparatus is not available.
-testi.jpg "EN ISO 760 Determination of Water - Karl Fischer Method (General Method) Test")
Whether direct titration or back titration, the electrometric method is more accurate and therefore recommended. The principle of the test consists in the reaction of any water present in a test portion with a solution of iodine and sulfur dioxide in a standardized pyridine/methanol mixture (Karl Fischer reagent) by titration with a previously known body of water.
The Karl Fischer method is a widely used method for the determination of water in a wide variety of materials, including chemicals, drugs, foods, and petroleum products. The method is based on the reaction of water with iodine and sulfur dioxide in a suitable solvent, typically methanol or ethanol, to form sulfuric acid, which is then titrated with a standardized base solution such as sodium hydroxide to determine the amount.
The Karl Fischer method is a sensitive and accurate method for the determination of water and can be used for a wide variety of materials. However, some materials may require additional sample preparation or special reagents to obtain accurate results. In addition, care must be taken to ensure that used reagents are handled and disposed of properly as they can be hazardous.
EUROLAB assists manufacturers with EN ISO 760 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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