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ICUMSA Method GS8-2 (2009)


The Determination of the Polarisation of Beet Sugar Syrups after Clarification according to Carrez – Official

First Issued 2009


Descriptors: beet sugar syrups, thick juices, run-off syrups, polarisation, clarification with Carrez reagent, purity, sucrose content, determination of content


1 Scope

The method is applicable to sugar syrups (especially thick juices and run-off syrups) produced in sugar beet processing (General Subject 8). Satisfying a commercial requirement it is intended as a method for assessing the sucrose content in thick juices and other intermediate products with a minimal purity of 70%.

The method has been developed by modification of ICUMSA Method GS1/2/3/9-1 “The Determination of the Polarisation of Raw Sugar by Polarimetry – Official” [1].

As an alternative to the conventional clarification with basic lead acetate solution, the clarification with Carrez reagent is described [2].


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