ISO 24115 is an international standard that specifies routine calibration procedures for determining Moisture content of coffee. The standard applies to the calibration of moisture meters for green coffee beans and aims to ensure accurate and reliable measurement results of moisture meters through standardized methods. The calibration procedure involves comparison testing using standard samples and evaluation of the Repeatability and collection rate of the instrument. Through these steps, moisture meters are able to provide precise Moisture content measurement in daily use, thus supporting the coffee industry in precise operation in quality control and trade.