The ISO 11357 series specifies several differential scanning calorimetry (DSC) methods for the termal analysis of polymers and polymer blends, such as thermoplastics (polymers, moulding compounds and other moulding materials, with or without fillers, fibres or reinforcements), thermosets (uncured or cured materials, with or without fillers, fibres or reinforcements), and elastomers (with or without fillers, fibres or reinforcements). The ISO 11357 series is applicable for the observation and measurement of various properties of, and phenomena associated with, the above-mentioned materials, such as physical transitions (glass transition, phase transitions such as melting and crystallization, polymorphic transitions, etc.), chemical reactions (polymerization, crosslinking and curing of elastomers and thermosets, etc.), the stability to oxidation, and the heat capacity. This document specifies a number of general aspects of differential scanning calorimetry, such as the principle and the apparatus, sampling, calibration and general aspects of the procedure and test report common to all following parts. Details on performing specific methods are given in subsequent parts of the ISO 11357 series (see Foreword). SAFETY STATEMENT Persons using this document should be familiar with normal laboratory practice, if applicable. This document does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory requirements.