Description
The ICUMSA Methods Book Supplement 2024 comprises 2 new Methods, 1 revised Standard, 2 Methods changed in status, and 11 completely revised and rewritten Methods.
Introductory Pages
The new introductory pages 1–14 of the Methods Book should replace the 2022 version.
New Method
GGS3-31 (2024) 5-Hydroxymethylfurfural (HMF) in Sugar Syrups and Invert Sugar Syrups by High Performance Liquid Chromatography (HPLC) – Official
GS7-36 (2024) Total, Soluble, and Insoluble Starch in Cane Raw Sugars using Microwave-Assisted Neutralisation – Tentative
Method changed in Status from Official to Official (Reference)
GS5-2 (2024) Sucrose, Dry Substance and Fibre in Cane by NIR-Polarimetry and Refractometry using a Hydraulic Press for Juice Recovery – Official (Reference)
Method changed in Field of Application
GS2-35 (2024) The Determination of Sulphite in Refined and Speciality Sugars by an Enzymatic Method – Official
Revised Methods
GS1-7 (2024) Colour in Solution of Sugars and Syrups with more than 250 and less than 16,000 ICUMSA® Units and pH Adjustment with HCl/NaOH – Official (formerly: Determination of the Solution Colour of Raw Sugars, Brown Sugars and Coloured Syrups at pH 7.0 – Official)
GS2-9 (2024) Colour in Solution of Sugars with more than 20 and less than 600 ICUMSA® Units and pH Adjustment with TEA/HCl Buffer – Accepted (formerly: The Determination of Sugar Solution Colour at pH 7.0 – Accepted)
GS2-10 (2024) Colour in Solution of Sugars, Liquid Sugar and Syrups with less than 50 ICUMSA® Units and with no pH Adjustment–Official (formerly: The Determination of White Sugar Solution Colour – Official)
GS2-11 (2024) Visual Appearance of White Sugars – using Braunschweig Colour-Types – Official
GS2-13 (2024) Reflectance of White Sugar – Official
GS2-41 (2024) Total Mesophilic Aerobic Microorganisms in White Sugar by Membrane Filtration or Pour Plating – Accepted
GS2-49 (2024) Thermophilic Spore-Forming Bacteria in White Sugar by Membrane Filtration or Pour Plating – Accepted
GS2-50 (2024) Thermophilic Acidophilic Bacteria (TAB) and Guaiacol Producing TAB (GP-TAB) in White Sugar by Membrane Filtration or Pour Plating–Accepted
GS6-3 (2024) Polarimetric Sucrose Content in Sugar Beet after Clarification using Aluminium Sulphate – Official
GS6-5 (2024) Spectrophotometric alpha-Amino-Nitrogen Content in Sugar Beet after Clarification using Aluminium Sulphate – Official
GS6-7 (2024) Flame Photometric Potassium and Sodium Content in Sugar Beet after Clarification using Aluminium Sulphate – Official
Revised Specifications and Standards
SPS-12 (2024) Sampling of Crystalline, Paste and Liquid Sugars for Microbiological Analyses
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