• Feb 10, 2026 Icumsa Methods Gs1 3 7 amples; GS7 is preferred for raw or specialty sugars. Measurement Wavelengths: GS1 and GS3 typically use 420 nm, whereas GS7 2. may employ alternative wavelengths to capture specific color nuances. Sample Preparation: GS3 requires more careful dilution to manage syrup 3. viscosity, while G BY Montana Bartell
