Abstract / scope
ISO 15063:2004 establishes guidelines for the determination of hydroxyl numbers of polyols using NIR (near infrared) spectroscopy. Definitions and calibration techniques are given. Procedures for selecting calibration materials and for collecting and treating data to develop NIR calibrations are outlined. Criteria for building, evaluating and validating the NIR calibration model are also described. Procedures for sample handling, data gathering and evaluation are included.