ASTM E2082-12(R2020) pdf free download

ASTM E2082-12(R2020) pdf free download.Standard Guide for Descriptive Analysis of Shampoo Performance
1. Scope
1.1 The objective of this guide is to provide procedures which may be used in the design, execution, and analysis of studies to quantitatively assess the objective sensory attributes of shampoos. This is one of many appropriate techniques used in the hair-care industry. These attributes can then be used to define performance of shampoos and to provide direction in product formulation, research guidance testing, and claim substantiation. This guide includes the sensory properties involved in dispensing a product, as well as the attributes pertinent to shampooing swatches, half and whole heads. Although this guide is specific to shampoos, the procedures should be applicable to most hair-care products. 1.2 Guidelines are provided for the definition of terminology, procedures for manipulation of products, identification/selection of hair type, and assessor training. References for rating scales are not provided in this guide. The user should be aware that some sensory practices may require the use of attribute references (anchors) when training the assessors. 1.3 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions: 3.1.1 Definitions of terms other than those given as follows appear in Terminology E253. 3.2 Definitions: 3.2.1 cosmetologist—a licensed, trained professional who has been certified by state or government agencies to apply hair-care products to human heads; these individuals may be alternately described as beauticians, stylists, hairdressers, or cosmetologists. 3.2.2 subjects—those individuals recruited to participate in a study for the quality or condition of their hair, to serve as sample carriers. 3.2.3 trained panel—a group of assessors who have been formally trained to evaluate the visual and tactile properties of shampoo or hair, using a standard descriptive analysis method which quantifies attributes on a rating scale over a set time period; the number may vary depending on the complexity of the test and the skill of the assessor.
7. Trained Panel Selection and Descriptive Training
7.1 The objective is to select and train assessors to evaluate the visual and tactile properties of shampoos on hair swatches using a descriptive analysis method. The selection process should include the principles embodied in ASTM STP758. The task of the assessor is to describe product and hair attributes by rating the perceived quantity and quality ofspecified attributes. 7.2 Trained Panel Selection: 7.2.1 Assessors may be recruited from within the company, or from the local community. The use of licensed cosmetolo- gists as trained assessors adds an additional qualification to the community recruit. 7.2.2 The choice to use internal employees allows a com- pany to have assessors on site and control proprietary infor- mation. It may, however, create potential resource and sched- uling conflicts, since panel evaluation will not be the employees’ primary job focus. 7.2.3 The use of local community residents allows the company to schedule more panel time per week and may lower the risk of losing assessors. A large pool of potential assessors is usually available. 7.2.3.1 A screening questionnaire is recommended to deter- mine availability, interest, general knowledge of tactile properties, ability to use descriptive words, and ability to use rating scales. This questionnaire is used to eliminate unsuitable candidates. Some questions on the screening questionnaire relate to previous and current employment. Assess if any of these questions conflicts with individual company policy (see Table 2) It is recommended that the form be approved by the company’s human resources department.