ISO 939:2021 PDF

Overview

ISO 939:2021 specifies an entrainment distillation method for the determination of moisture content in spices and condiments. The method uses an organic solvent immiscible with water (toluene, unless otherwise specified) to entrain water by azeotropic distillation and collect it in a graduated receiver. The standard is intended to provide a repeatable laboratory procedure to support quality control, shelf-life assessment and regulatory compliance.