1.1 This guide covers the evaluation of chitosan salts suitable for use in biomedical or pharmaceutical applications, or both, including, but not limited to, tissue-engineered medical products (TEMPS). 1.2 This guide addresses key parameters relevant for the functionality, characterization, and purity of chitosan salts. 1.3 As with any material, some characteristics of chitosan may be altered by processing techniques (such as molding, extrusio