Polarimetric Sucrose Content of Raw Sugar by VIS-Polarimetry – Official (Reference)

35.00  for 2 years

ICUMSA Method GS1-1 (2022)

online version (2 years license)

Year of Publication: 2022

Description

The sucrose content of raw sugar, white sugar, some speciality sugars and plantation white sugar is determined by polarimetry in the visible (VIS) wavelength range (540 nm to 633 nm) and expressed in °Z of the international polarimetric sugar scale.

The international polarimetric sugar scale is exactly valid only for solutions of pure sucrose in water.

Deviations from the true sucrose content depend on the amount and kind of impurities.

Following this method, typical impurities are eliminated as far as possible by clarification using lead acetate.

The method is Officially adopted and may form the basis of sugar purchasing contracts.

The absolute difference between two results obtained under repeatability conditions should be not greater than 0.10 °Z.

The absolute difference between two results obtained under reproducibility conditions should be not greater than 0.25 °Z.

Precision data are determined and valid only for raw sugar in the range of 97.6 °Z to 99.98 °Z.

The method was assigned Official (Reference) status.

It is the method that ICUMSA® recommends for the determination of the Polarimetric Sucrose Content of Raw Sugar in preference to Method GS1-2.

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Conditions of Use

Single ICUMSA® Methods are only offered digitally. The subscription license includes two year access to the method, which can be read on sugarindustry.info.

The Method cannot be downloaded, shared or duplicated. Please note the Copyright, Licensing and Trademark Policy of ICUMSA© and Bartens.

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Method Abstract

 

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Additional information

Author

ICUMSA Method GS1-1 (2022)

Type

online version (2 years license)