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ISO 760:1978

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Determination of water -- Karl Fischer method (General method)

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Two methods of titration depending on whether the end point is detected visually or electrometrically are specified. The visual method is only applicable to colourless solutions but can be used when no electrometric apparatus is available. The electrometric method, whether by direct titration or back-titration, is the more accurate one and for this reason recommended. The principle of the test consists in reaction of any water present in a test portion with a solution of iodine and sulphur dioxide in a pyridine/methanol mixture (Karl Fischer reagent), previously standardized by titration with an exactly known mass of water.


SDO ISO: International Organization for Standardization
Document Number ISO 760
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 47/SC 1
Publish Date Document Id Type View
Not Available ISO 760:1978 Revision