The ICUMSA Methods Book Supplement 2026 comprises 2 new Methods, 1 revised Standard, 1 Method changed in Status, 1 Method changed in Field of Application, and 7 revised Methods.
The ICUMSA Methods Book Supplement 2026 can be ordered in the Bartens Book Shop.
Introductory Pages
The new introductory pages 1–14 of the Methods Book should replace the 2024 version.
New Methods
GS1-25 (2026) Particle Size Distribution of Raw Sugar by Sieving – Tentative
GS4-23 (2026) Polarimetric Sucrose Content of Molasses with Correction for Invert Sugar Content by Polarimetry and Clarification using Carrez Solutions – Tentative
Method changed in Status from Official to Accepted
GS2-45 (2026) Slime-forming Bacteria in White Sugar by Membrane Filtration or Pour Plating – Accepted
Methods changed in Field of Application
GS2-33 (2026) Spectrophotometric Sulphite Content in White Sugar and Plantation White Sugar using Rosaniline Hydrochloride – Official (Reference)
GS4-2 (2026) Sucrose in Molasses by Gas Chromatography – Official
Revised Methods
GS2-13 (2026) Reflectance of White Sugar – Official
GS2-19 (2026) Insoluble Matter in White Sugar by Membrane Filtration – Official
GS2-50 (2026) Thermophilic Acidophilic Bacteria (TAB) and Guaiacol Producing TAB (GP-TAB) in White Sugar by Membrane Filtration or Enrichment – Accepted
GS4-1 (2026) Polarimetric Sucrose Content of Molasses with Correction for Invert Sugar Content by Polarimetry and Clarification using Basic Lead Acetate – Accepted
GS8-19 (2026) Dextran by Spectrometry using a Modified Alcohol Haze Method
– in Beet Raw Juice – Accepted
– in Beet Thick Juice – Tentative
GS9-8 (2026) Colour in Solution of Sugars with more than 10 and less than 16,000 ICUMSA® Units and pH Adjustment with MOPS Buffer – Official (Reference)
Revised Specification and Standard
SPS-1 (2026) Polarimetry and the International Sugar Scale – Official