1.1 This guide provides guidelines for the selection and training of expert assessors for the sensory evaluation of toothpaste. Sensory evaluation of toothpaste can be used to define the sensory attributes of toothpaste and then to measure these attributes quantitatively for the purposes of new product development, product optimization, competitive benchmarking, and claims substantiation. 1.2 A general framework for toothpaste descriptive analysis is provided to guide the reader in the design and execution (including sample preparation and presentation, facility and testing environment, and specific evaluation protocol) of toothpaste descriptive analysis evaluations. 1.3 This guide provides suggested protocols and approaches to the evaluation of toothpaste (dentifrice) and in no way excludes any alternate approaches that may be effective in providing such perceptual evaluations. 1.4 This guide does not address other oral care products including, but not limited to, whitening agents, oral rinses, mouthwashes, toothbrushes, dental flosses, denture adhesive, floss picks, or other oral care products. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 2. Referenced Documents 2.1 ASTM Standards:2 E253 Terminology Relating to Sensory Evaluation of Materials and Products E1490 Guide for Two Sensory Descriptive Analysis Approaches for Skin Creams and Lotions E2082 Guide for Descriptive Analysis of Shampoo Performance